./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_hash_table_move_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 ba6eb72b2235d93ac0dcdd3f0e672793184c4cf65112c581319750a174c5bca8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:49:35,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:49:35,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:49:35,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:49:35,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:49:35,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:49:35,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:49:35,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:49:35,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:49:35,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:49:35,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:49:35,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:49:35,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:49:35,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:49:35,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:49:35,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:49:35,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:49:35,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:49:35,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:49:35,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:49:35,801 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:49:35,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:49:35,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:49:35,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:49:35,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:49:35,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:49:35,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:49:35,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:49:35,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:49:35,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:49:35,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:49:35,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:49:35,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:49:35,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:49:35,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:49:35,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:49:35,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:49:35,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:49:35,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:49:35,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:49:35,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:49:35,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:49:35,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:49:35,853 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:49:35,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:49:35,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:49:35,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:49:35,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:49:35,855 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:49:35,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:49:35,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:49:35,856 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:49:35,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:49:35,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:49:35,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:49:35,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:49:35,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:49:35,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:49:35,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:49:35,858 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:49:35,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:49:35,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:49:35,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:49:35,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:49:35,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:49:35,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:49:35,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:49:35,860 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:49:35,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:49:35,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:49:35,861 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:49:35,861 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:49:35,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:49:35,862 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba6eb72b2235d93ac0dcdd3f0e672793184c4cf65112c581319750a174c5bca8 [2022-07-13 22:49:36,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:49:36,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:49:36,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:49:36,149 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:49:36,150 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:49:36,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i [2022-07-13 22:49:36,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7ad09017/51c6b4ea02854abdb810ef55162b12cd/FLAGe57be55cc [2022-07-13 22:49:36,904 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:49:36,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i [2022-07-13 22:49:36,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7ad09017/51c6b4ea02854abdb810ef55162b12cd/FLAGe57be55cc [2022-07-13 22:49:37,223 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7ad09017/51c6b4ea02854abdb810ef55162b12cd [2022-07-13 22:49:37,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:49:37,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:49:37,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:49:37,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:49:37,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:49:37,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:49:37" (1/1) ... [2022-07-13 22:49:37,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434836f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:49:37, skipping insertion in model container [2022-07-13 22:49:37,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:49:37" (1/1) ... [2022-07-13 22:49:37,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:49:37,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:49:37,542 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_hash_table_move_harness.i[4493,4506] [2022-07-13 22:49:37,550 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_hash_table_move_harness.i[4553,4566] [2022-07-13 22:49:38,413 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:38,414 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:38,414 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:38,415 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:38,416 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:38,424 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:38,425 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:38,427 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:38,427 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:38,429 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:38,429 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:38,430 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:38,432 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:38,747 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:49:38,749 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:49:38,749 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:49:38,750 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:49:38,752 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:49:38,752 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:49:38,753 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:49:38,753 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:49:38,754 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:49:38,754 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:49:38,869 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:49:39,194 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,195 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,226 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,228 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,236 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,236 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,257 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,259 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,261 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,261 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,262 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,262 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,262 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:49:39,375 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:49:39,396 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_hash_table_move_harness.i[4493,4506] [2022-07-13 22:49:39,397 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_hash_table_move_harness.i[4553,4566] [2022-07-13 22:49:39,443 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,443 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,444 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,444 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,444 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,451 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,452 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,453 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,453 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,456 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,456 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,457 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,457 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,483 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:49:39,484 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:49:39,484 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:49:39,485 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:49:39,485 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:49:39,486 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:49:39,486 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:49:39,486 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:49:39,487 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:49:39,487 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:49:39,514 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:49:39,652 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,653 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,660 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,661 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,663 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,663 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,675 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,675 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,676 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,676 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,677 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,677 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,678 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:49:39,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:49:39,878 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:49:39,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:49:39 WrapperNode [2022-07-13 22:49:39,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:49:39,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:49:39,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:49:39,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:49:39,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:49:39" (1/1) ... [2022-07-13 22:49:40,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:49:39" (1/1) ... [2022-07-13 22:49:40,089 INFO L137 Inliner]: procedures = 774, calls = 2432, calls flagged for inlining = 69, calls inlined = 12, statements flattened = 622 [2022-07-13 22:49:40,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:49:40,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:49:40,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:49:40,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:49:40,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:49:39" (1/1) ... [2022-07-13 22:49:40,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:49:39" (1/1) ... [2022-07-13 22:49:40,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:49:39" (1/1) ... [2022-07-13 22:49:40,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:49:39" (1/1) ... [2022-07-13 22:49:40,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:49:39" (1/1) ... [2022-07-13 22:49:40,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:49:39" (1/1) ... [2022-07-13 22:49:40,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:49:39" (1/1) ... [2022-07-13 22:49:40,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:49:40,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:49:40,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:49:40,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:49:40,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:49:39" (1/1) ... [2022-07-13 22:49:40,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:49:40,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:49:40,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:49:40,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:49:40,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-13 22:49:40,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:49:40,269 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-13 22:49:40,269 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-13 22:49:40,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:49:40,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:49:40,270 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-07-13 22:49:40,270 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-07-13 22:49:40,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:49:40,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:49:40,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:49:40,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:49:40,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:49:40,271 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-13 22:49:40,271 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-13 22:49:40,271 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-13 22:49:40,272 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-13 22:49:40,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-13 22:49:40,272 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-13 22:49:40,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:49:40,272 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-13 22:49:40,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-13 22:49:40,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:49:40,273 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-13 22:49:40,273 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-13 22:49:40,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:49:40,273 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-07-13 22:49:40,273 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-07-13 22:49:40,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:49:40,274 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-07-13 22:49:40,274 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-07-13 22:49:40,274 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:49:40,274 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:49:40,274 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-07-13 22:49:40,274 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-07-13 22:49:40,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:49:40,275 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-13 22:49:40,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-13 22:49:40,275 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-13 22:49:40,275 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-13 22:49:40,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:49:40,564 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:49:40,566 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:49:41,284 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:49:41,291 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:49:41,291 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 22:49:41,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:49:41 BoogieIcfgContainer [2022-07-13 22:49:41,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:49:41,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:49:41,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:49:41,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:49:41,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:49:37" (1/3) ... [2022-07-13 22:49:41,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63030b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:49:41, skipping insertion in model container [2022-07-13 22:49:41,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:49:39" (2/3) ... [2022-07-13 22:49:41,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63030b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:49:41, skipping insertion in model container [2022-07-13 22:49:41,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:49:41" (3/3) ... [2022-07-13 22:49:41,301 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_move_harness.i [2022-07-13 22:49:41,314 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:49:41,314 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:49:41,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:49:41,362 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@ebb8bd5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@793ae501 [2022-07-13 22:49:41,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:49:41,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 79 states have internal predecessors, (92), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-07-13 22:49:41,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-13 22:49:41,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:41,380 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:49:41,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:41,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:41,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1851529921, now seen corresponding path program 1 times [2022-07-13 22:49:41,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:41,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556228682] [2022-07-13 22:49:41,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:41,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:41,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:49:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:41,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:49:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:41,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:49:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:41,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:49:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:41,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:49:41,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:41,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556228682] [2022-07-13 22:49:41,994 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-13 22:49:41,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780670971] [2022-07-13 22:49:41,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:41,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:41,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:49:42,000 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:49:42,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:49:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:42,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 2427 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 22:49:42,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:49:42,570 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-07-13 22:49:42,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:49:42,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780670971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:42,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:49:42,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:49:42,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326325330] [2022-07-13 22:49:42,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:42,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:49:42,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:42,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:49:42,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:49:42,615 INFO L87 Difference]: Start difference. First operand has 126 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 79 states have internal predecessors, (92), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:49:42,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:42,660 INFO L93 Difference]: Finished difference Result 244 states and 318 transitions. [2022-07-13 22:49:42,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:49:42,662 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 139 [2022-07-13 22:49:42,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:42,676 INFO L225 Difference]: With dead ends: 244 [2022-07-13 22:49:42,676 INFO L226 Difference]: Without dead ends: 120 [2022-07-13 22:49:42,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:49:42,689 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:49:42,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:49:42,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-07-13 22:49:42,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-07-13 22:49:42,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 74 states have internal predecessors, (83), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-13 22:49:42,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 146 transitions. [2022-07-13 22:49:42,751 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 146 transitions. Word has length 139 [2022-07-13 22:49:42,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:42,752 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 146 transitions. [2022-07-13 22:49:42,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:49:42,753 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 146 transitions. [2022-07-13 22:49:42,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 22:49:42,765 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:42,766 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:49:42,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:49:42,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-13 22:49:42,994 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:42,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:42,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1946732163, now seen corresponding path program 1 times [2022-07-13 22:49:42,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:42,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727420150] [2022-07-13 22:49:42,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:42,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:43,098 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:49:43,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1262425962] [2022-07-13 22:49:43,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:43,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:43,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:49:43,100 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:49:43,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:49:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:43,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 2455 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:49:43,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:49:43,638 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-13 22:49:43,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:49:43,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:43,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727420150] [2022-07-13 22:49:43,639 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:49:43,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262425962] [2022-07-13 22:49:43,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262425962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:43,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:49:43,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:49:43,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695108520] [2022-07-13 22:49:43,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:43,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:49:43,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:43,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:49:43,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:49:43,643 INFO L87 Difference]: Start difference. First operand 120 states and 146 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-13 22:49:43,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:43,696 INFO L93 Difference]: Finished difference Result 233 states and 284 transitions. [2022-07-13 22:49:43,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:49:43,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 145 [2022-07-13 22:49:43,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:43,700 INFO L225 Difference]: With dead ends: 233 [2022-07-13 22:49:43,701 INFO L226 Difference]: Without dead ends: 125 [2022-07-13 22:49:43,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:49:43,705 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 2 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:49:43,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 567 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:49:43,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-07-13 22:49:43,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-07-13 22:49:43,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 77 states have (on average 1.12987012987013) internal successors, (87), 78 states have internal predecessors, (87), 32 states have call successors, (32), 14 states have call predecessors, (32), 15 states have return successors, (32), 32 states have call predecessors, (32), 31 states have call successors, (32) [2022-07-13 22:49:43,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 151 transitions. [2022-07-13 22:49:43,717 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 151 transitions. Word has length 145 [2022-07-13 22:49:43,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:43,718 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 151 transitions. [2022-07-13 22:49:43,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-13 22:49:43,718 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 151 transitions. [2022-07-13 22:49:43,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 22:49:43,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:43,720 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:49:43,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:49:43,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-13 22:49:43,948 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:43,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:43,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1359183933, now seen corresponding path program 1 times [2022-07-13 22:49:43,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:43,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530330211] [2022-07-13 22:49:43,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:43,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:49:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:49:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:49:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:49:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:49:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:49:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:49:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:49:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:49:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:49:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:49:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:49:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 22:49:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 22:49:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 22:49:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:49:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 22:49:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 22:49:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-13 22:49:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-13 22:49:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:44,758 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-07-13 22:49:44,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:44,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530330211] [2022-07-13 22:49:44,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530330211] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:49:44,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471748465] [2022-07-13 22:49:44,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:44,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:44,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:49:44,761 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:49:44,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:49:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:45,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 2463 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-13 22:49:45,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:49:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-13 22:49:45,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:49:45,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471748465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:45,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:49:45,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2022-07-13 22:49:45,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436351351] [2022-07-13 22:49:45,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:45,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:49:45,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:45,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:49:45,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2022-07-13 22:49:45,300 INFO L87 Difference]: Start difference. First operand 125 states and 151 transitions. Second operand has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-13 22:49:45,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:45,424 INFO L93 Difference]: Finished difference Result 229 states and 277 transitions. [2022-07-13 22:49:45,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:49:45,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 157 [2022-07-13 22:49:45,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:45,427 INFO L225 Difference]: With dead ends: 229 [2022-07-13 22:49:45,428 INFO L226 Difference]: Without dead ends: 128 [2022-07-13 22:49:45,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:49:45,429 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 2 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:49:45,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 759 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:49:45,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-07-13 22:49:45,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2022-07-13 22:49:45,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 79 states have (on average 1.1265822784810127) internal successors, (89), 81 states have internal predecessors, (89), 32 states have call successors, (32), 14 states have call predecessors, (32), 16 states have return successors, (35), 32 states have call predecessors, (35), 31 states have call successors, (35) [2022-07-13 22:49:45,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 156 transitions. [2022-07-13 22:49:45,453 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 156 transitions. Word has length 157 [2022-07-13 22:49:45,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:45,454 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 156 transitions. [2022-07-13 22:49:45,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-13 22:49:45,454 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 156 transitions. [2022-07-13 22:49:45,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 22:49:45,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:45,457 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:49:45,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:49:45,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:45,684 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:45,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:45,685 INFO L85 PathProgramCache]: Analyzing trace with hash -539435900, now seen corresponding path program 1 times [2022-07-13 22:49:45,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:45,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277275697] [2022-07-13 22:49:45,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:45,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:45,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:49:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:45,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:49:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:45,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:49:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:45,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:49:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:45,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:49:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:45,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:45,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:45,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:49:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:45,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:49:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:45,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:49:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:45,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:45,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:49:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:45,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:49:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:46,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:49:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:46,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:49:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:46,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:46,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:46,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:49:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:46,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 22:49:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:46,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:49:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:46,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 22:49:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:46,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:49:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:46,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 22:49:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:46,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-13 22:49:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:46,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-13 22:49:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:46,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-13 22:49:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-07-13 22:49:46,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:46,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277275697] [2022-07-13 22:49:46,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277275697] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:49:46,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784581541] [2022-07-13 22:49:46,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:46,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:46,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:49:46,184 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:49:46,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:49:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:46,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 2487 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-13 22:49:46,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:49:47,564 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2022-07-13 22:49:53,379 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-13 22:49:53,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:49:53,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784581541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:53,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:49:53,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-13 22:49:53,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622286654] [2022-07-13 22:49:53,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:53,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:49:53,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:53,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:49:53,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=202, Unknown=3, NotChecked=28, Total=272 [2022-07-13 22:49:53,383 INFO L87 Difference]: Start difference. First operand 128 states and 156 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-13 22:49:53,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:53,534 INFO L93 Difference]: Finished difference Result 240 states and 296 transitions. [2022-07-13 22:49:53,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:49:53,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 163 [2022-07-13 22:49:53,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:53,536 INFO L225 Difference]: With dead ends: 240 [2022-07-13 22:49:53,536 INFO L226 Difference]: Without dead ends: 134 [2022-07-13 22:49:53,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=54, Invalid=253, Unknown=3, NotChecked=32, Total=342 [2022-07-13 22:49:53,537 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 5 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:49:53,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 780 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 217 Unchecked, 0.1s Time] [2022-07-13 22:49:53,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-07-13 22:49:53,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2022-07-13 22:49:53,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 83 states have (on average 1.1325301204819278) internal successors, (94), 85 states have internal predecessors, (94), 33 states have call successors, (33), 15 states have call predecessors, (33), 16 states have return successors, (36), 32 states have call predecessors, (36), 32 states have call successors, (36) [2022-07-13 22:49:53,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 163 transitions. [2022-07-13 22:49:53,547 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 163 transitions. Word has length 163 [2022-07-13 22:49:53,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:53,548 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 163 transitions. [2022-07-13 22:49:53,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-13 22:49:53,548 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 163 transitions. [2022-07-13 22:49:53,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 22:49:53,550 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:53,550 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:49:53,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:49:53,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:53,763 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:53,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:53,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1849128130, now seen corresponding path program 1 times [2022-07-13 22:49:53,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:53,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505290814] [2022-07-13 22:49:53,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:53,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:53,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:49:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:53,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:49:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:53,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:49:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:53,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:49:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:53,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:49:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:53,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:53,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:53,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:49:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:53,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:49:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:54,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:49:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:54,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:54,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:49:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:54,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:49:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:54,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:49:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:54,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:49:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:54,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:54,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:54,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:49:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:54,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 22:49:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:54,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:49:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:54,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 22:49:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:54,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:49:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:54,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 22:49:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:54,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-13 22:49:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:54,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-13 22:49:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:54,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-13 22:49:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:54,196 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-07-13 22:49:54,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:54,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505290814] [2022-07-13 22:49:54,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505290814] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:49:54,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423530487] [2022-07-13 22:49:54,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:54,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:54,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:49:54,199 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:49:54,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:49:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:54,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2482 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:49:54,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:49:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-13 22:49:54,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:49:54,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423530487] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:54,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:49:54,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 8 [2022-07-13 22:49:54,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720958892] [2022-07-13 22:49:54,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:54,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:49:54,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:54,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:49:54,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:49:54,680 INFO L87 Difference]: Start difference. First operand 133 states and 163 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-13 22:49:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:54,713 INFO L93 Difference]: Finished difference Result 240 states and 295 transitions. [2022-07-13 22:49:54,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:49:54,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 163 [2022-07-13 22:49:54,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:54,716 INFO L225 Difference]: With dead ends: 240 [2022-07-13 22:49:54,716 INFO L226 Difference]: Without dead ends: 131 [2022-07-13 22:49:54,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:49:54,717 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 2 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:49:54,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 424 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:49:54,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-07-13 22:49:54,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2022-07-13 22:49:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 81 states have (on average 1.1111111111111112) internal successors, (90), 83 states have internal predecessors, (90), 32 states have call successors, (32), 14 states have call predecessors, (32), 16 states have return successors, (35), 32 states have call predecessors, (35), 31 states have call successors, (35) [2022-07-13 22:49:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 157 transitions. [2022-07-13 22:49:54,735 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 157 transitions. Word has length 163 [2022-07-13 22:49:54,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:54,736 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 157 transitions. [2022-07-13 22:49:54,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-13 22:49:54,737 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 157 transitions. [2022-07-13 22:49:54,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 22:49:54,739 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:54,739 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:49:54,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 22:49:54,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:54,960 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:54,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:54,960 INFO L85 PathProgramCache]: Analyzing trace with hash -971010897, now seen corresponding path program 1 times [2022-07-13 22:49:54,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:54,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120077624] [2022-07-13 22:49:54,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:54,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:49:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:49:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:49:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:49:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:49:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:49:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:49:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:49:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:49:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:49:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:49:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:49:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:49:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:49:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:49:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 22:49:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:49:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 22:49:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 22:49:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 22:49:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-13 22:49:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-13 22:49:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:55,658 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-07-13 22:49:55,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:55,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120077624] [2022-07-13 22:49:55,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120077624] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:49:55,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611097854] [2022-07-13 22:49:55,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:55,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:55,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:49:55,660 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:49:55,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:49:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:56,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 2517 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-13 22:49:56,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:49:56,324 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-13 22:49:57,027 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-13 22:49:57,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-07-13 22:49:57,330 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-13 22:49:57,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:49:57,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611097854] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:57,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:49:57,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [17] total 27 [2022-07-13 22:49:57,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773428945] [2022-07-13 22:49:57,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:57,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:49:57,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:57,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:49:57,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-07-13 22:49:57,334 INFO L87 Difference]: Start difference. First operand 130 states and 157 transitions. Second operand has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 13 states have internal predecessors, (79), 8 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (27), 9 states have call predecessors, (27), 7 states have call successors, (27) [2022-07-13 22:49:57,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:57,700 INFO L93 Difference]: Finished difference Result 224 states and 271 transitions. [2022-07-13 22:49:57,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:49:57,701 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 13 states have internal predecessors, (79), 8 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (27), 9 states have call predecessors, (27), 7 states have call successors, (27) Word has length 168 [2022-07-13 22:49:57,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:57,703 INFO L225 Difference]: With dead ends: 224 [2022-07-13 22:49:57,703 INFO L226 Difference]: Without dead ends: 188 [2022-07-13 22:49:57,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 195 SyntacticMatches, 16 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2022-07-13 22:49:57,705 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 71 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:49:57,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 635 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 281 Invalid, 0 Unknown, 242 Unchecked, 0.3s Time] [2022-07-13 22:49:57,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-07-13 22:49:57,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2022-07-13 22:49:57,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 116 states have (on average 1.1206896551724137) internal successors, (130), 122 states have internal predecessors, (130), 43 states have call successors, (43), 18 states have call predecessors, (43), 24 states have return successors, (52), 43 states have call predecessors, (52), 42 states have call successors, (52) [2022-07-13 22:49:57,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 225 transitions. [2022-07-13 22:49:57,717 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 225 transitions. Word has length 168 [2022-07-13 22:49:57,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:57,718 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 225 transitions. [2022-07-13 22:49:57,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 13 states have internal predecessors, (79), 8 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (27), 9 states have call predecessors, (27), 7 states have call successors, (27) [2022-07-13 22:49:57,718 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 225 transitions. [2022-07-13 22:49:57,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 22:49:57,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:57,720 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 22:49:57,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 22:49:57,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:57,936 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:57,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:57,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1364037907, now seen corresponding path program 1 times [2022-07-13 22:49:57,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:57,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584042829] [2022-07-13 22:49:57,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:57,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:49:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:49:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:49:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:49:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:49:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:49:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:49:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:49:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:49:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:49:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:49:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:49:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:49:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:49:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:49:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 22:49:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:49:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 22:49:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 22:49:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 22:49:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-13 22:49:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-13 22:49:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:58,479 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-07-13 22:49:58,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:58,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584042829] [2022-07-13 22:49:58,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584042829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:58,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:49:58,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:49:58,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030916837] [2022-07-13 22:49:58,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:58,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:49:58,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:58,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:49:58,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:49:58,484 INFO L87 Difference]: Start difference. First operand 184 states and 225 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-13 22:49:59,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:59,015 INFO L93 Difference]: Finished difference Result 224 states and 272 transitions. [2022-07-13 22:49:59,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:49:59,016 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) Word has length 168 [2022-07-13 22:49:59,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:59,018 INFO L225 Difference]: With dead ends: 224 [2022-07-13 22:49:59,018 INFO L226 Difference]: Without dead ends: 191 [2022-07-13 22:49:59,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:49:59,019 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 153 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:49:59,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 440 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 22:49:59,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-07-13 22:49:59,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 184. [2022-07-13 22:49:59,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 116 states have (on average 1.1206896551724137) internal successors, (130), 122 states have internal predecessors, (130), 43 states have call successors, (43), 18 states have call predecessors, (43), 24 states have return successors, (51), 43 states have call predecessors, (51), 42 states have call successors, (51) [2022-07-13 22:49:59,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 224 transitions. [2022-07-13 22:49:59,036 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 224 transitions. Word has length 168 [2022-07-13 22:49:59,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:59,037 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 224 transitions. [2022-07-13 22:49:59,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-13 22:49:59,037 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 224 transitions. [2022-07-13 22:49:59,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-13 22:49:59,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:59,039 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:49:59,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:49:59,040 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:59,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:59,040 INFO L85 PathProgramCache]: Analyzing trace with hash 720508465, now seen corresponding path program 1 times [2022-07-13 22:49:59,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:59,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521794912] [2022-07-13 22:49:59,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:59,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:49:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:49:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:49:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:49:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:49:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:49:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:49:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:49:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:49:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:49:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:49:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:49:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:49:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:49:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:49:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 22:49:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:49:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 22:49:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 22:49:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 22:49:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-13 22:49:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-13 22:49:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2022-07-13 22:49:59,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:59,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521794912] [2022-07-13 22:49:59,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521794912] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:49:59,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122013148] [2022-07-13 22:49:59,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:59,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:59,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:49:59,680 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:49:59,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 22:50:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:00,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 2536 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-13 22:50:00,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:50:00,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-13 22:50:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-13 22:50:00,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:50:00,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122013148] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:50:00,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:50:00,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [17] total 26 [2022-07-13 22:50:00,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595189333] [2022-07-13 22:50:00,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:50:00,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 22:50:00,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:50:00,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 22:50:00,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:50:00,851 INFO L87 Difference]: Start difference. First operand 184 states and 224 transitions. Second operand has 13 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 7 states have call successors, (28), 4 states have call predecessors, (28), 6 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2022-07-13 22:50:01,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:50:01,180 INFO L93 Difference]: Finished difference Result 294 states and 339 transitions. [2022-07-13 22:50:01,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:50:01,181 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 7 states have call successors, (28), 4 states have call predecessors, (28), 6 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) Word has length 169 [2022-07-13 22:50:01,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:50:01,183 INFO L225 Difference]: With dead ends: 294 [2022-07-13 22:50:01,183 INFO L226 Difference]: Without dead ends: 207 [2022-07-13 22:50:01,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 201 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2022-07-13 22:50:01,184 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 69 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 387 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:50:01,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 680 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 288 Invalid, 0 Unknown, 387 Unchecked, 0.3s Time] [2022-07-13 22:50:01,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-07-13 22:50:01,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2022-07-13 22:50:01,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 132 states have (on average 1.0984848484848484) internal successors, (145), 138 states have internal predecessors, (145), 45 states have call successors, (45), 22 states have call predecessors, (45), 28 states have return successors, (53), 45 states have call predecessors, (53), 44 states have call successors, (53) [2022-07-13 22:50:01,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 243 transitions. [2022-07-13 22:50:01,211 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 243 transitions. Word has length 169 [2022-07-13 22:50:01,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:50:01,212 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 243 transitions. [2022-07-13 22:50:01,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 7 states have call successors, (28), 4 states have call predecessors, (28), 6 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2022-07-13 22:50:01,212 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 243 transitions. [2022-07-13 22:50:01,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-13 22:50:01,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:50:01,214 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 22:50:01,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 22:50:01,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:50:01,432 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:50:01,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:50:01,432 INFO L85 PathProgramCache]: Analyzing trace with hash 995268079, now seen corresponding path program 1 times [2022-07-13 22:50:01,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:50:01,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156418564] [2022-07-13 22:50:01,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:50:01,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:50:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:50:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:50:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:50:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:50:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:50:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:50:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:50:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:50:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:50:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:50:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:50:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:50:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:50:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:50:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:50:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:50:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:50:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:50:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:50:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:50:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 22:50:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:50:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 22:50:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 22:50:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 22:50:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-13 22:50:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-13 22:50:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:01,907 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-07-13 22:50:01,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:50:01,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156418564] [2022-07-13 22:50:01,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156418564] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:50:01,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165843288] [2022-07-13 22:50:01,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:50:01,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:50:01,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:50:01,909 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:50:01,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 22:50:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:02,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:50:02,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:50:02,501 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-07-13 22:50:02,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:50:02,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165843288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:50:02,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:50:02,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-07-13 22:50:02,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945922456] [2022-07-13 22:50:02,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:50:02,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:50:02,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:50:02,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:50:02,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:50:02,507 INFO L87 Difference]: Start difference. First operand 206 states and 243 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-13 22:50:02,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:50:02,691 INFO L93 Difference]: Finished difference Result 287 states and 331 transitions. [2022-07-13 22:50:02,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:50:02,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 169 [2022-07-13 22:50:02,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:50:02,696 INFO L225 Difference]: With dead ends: 287 [2022-07-13 22:50:02,696 INFO L226 Difference]: Without dead ends: 196 [2022-07-13 22:50:02,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:50:02,699 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 144 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:50:02,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 513 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:50:02,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-13 22:50:02,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-07-13 22:50:02,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 124 states have (on average 1.0887096774193548) internal successors, (135), 128 states have internal predecessors, (135), 45 states have call successors, (45), 22 states have call predecessors, (45), 26 states have return successors, (51), 45 states have call predecessors, (51), 44 states have call successors, (51) [2022-07-13 22:50:02,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 231 transitions. [2022-07-13 22:50:02,722 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 231 transitions. Word has length 169 [2022-07-13 22:50:02,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:50:02,726 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 231 transitions. [2022-07-13 22:50:02,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-13 22:50:02,727 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 231 transitions. [2022-07-13 22:50:02,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-13 22:50:02,730 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:50:02,730 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:50:02,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 22:50:02,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-13 22:50:02,955 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:50:02,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:50:02,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1761253123, now seen corresponding path program 1 times [2022-07-13 22:50:02,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:50:02,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906704514] [2022-07-13 22:50:02,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:50:02,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:50:03,027 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:50:03,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076073368] [2022-07-13 22:50:03,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:50:03,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:50:03,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:50:03,029 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:50:03,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 22:50:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:03,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 2621 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:50:03,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:50:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-13 22:50:03,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:50:03,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:50:03,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906704514] [2022-07-13 22:50:03,551 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:50:03,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076073368] [2022-07-13 22:50:03,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076073368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:50:03,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:50:03,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:50:03,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345876300] [2022-07-13 22:50:03,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:50:03,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:50:03,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:50:03,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:50:03,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:50:03,555 INFO L87 Difference]: Start difference. First operand 196 states and 231 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-13 22:50:03,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:50:03,585 INFO L93 Difference]: Finished difference Result 382 states and 450 transitions. [2022-07-13 22:50:03,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:50:03,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 174 [2022-07-13 22:50:03,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:50:03,589 INFO L225 Difference]: With dead ends: 382 [2022-07-13 22:50:03,589 INFO L226 Difference]: Without dead ends: 198 [2022-07-13 22:50:03,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:50:03,591 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 2 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:50:03,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 559 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:50:03,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-07-13 22:50:03,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-07-13 22:50:03,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 126 states have (on average 1.0873015873015872) internal successors, (137), 129 states have internal predecessors, (137), 45 states have call successors, (45), 22 states have call predecessors, (45), 26 states have return successors, (51), 46 states have call predecessors, (51), 44 states have call successors, (51) [2022-07-13 22:50:03,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 233 transitions. [2022-07-13 22:50:03,611 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 233 transitions. Word has length 174 [2022-07-13 22:50:03,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:50:03,612 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 233 transitions. [2022-07-13 22:50:03,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-13 22:50:03,612 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 233 transitions. [2022-07-13 22:50:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-13 22:50:03,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:50:03,616 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 22:50:03,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 22:50:03,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 22:50:03,839 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:50:03,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:50:03,840 INFO L85 PathProgramCache]: Analyzing trace with hash 2005475441, now seen corresponding path program 2 times [2022-07-13 22:50:03,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:50:03,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336667454] [2022-07-13 22:50:03,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:50:03,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:50:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:50:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:50:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:50:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:50:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:50:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:50:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:50:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:50:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:50:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:50:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:50:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:50:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:50:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:50:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:50:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:50:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:50:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:50:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:50:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:50:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 22:50:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:50:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 22:50:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 22:50:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:50:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:50:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-13 22:50:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-13 22:50:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-13 22:50:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-07-13 22:50:04,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:50:04,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336667454] [2022-07-13 22:50:04,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336667454] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:50:04,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223490828] [2022-07-13 22:50:04,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:50:04,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:50:04,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:50:04,724 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:50:04,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 22:50:05,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:50:05,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:50:05,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 84 conjunts are in the unsatisfiable core [2022-07-13 22:50:05,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:50:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-13 22:50:05,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:50:05,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223490828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:50:05,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:50:05,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [20] total 25 [2022-07-13 22:50:05,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258300672] [2022-07-13 22:50:05,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:50:05,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:50:05,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:50:05,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:50:05,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2022-07-13 22:50:05,776 INFO L87 Difference]: Start difference. First operand 198 states and 233 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-13 22:50:05,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:50:05,928 INFO L93 Difference]: Finished difference Result 388 states and 455 transitions. [2022-07-13 22:50:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:50:05,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 180 [2022-07-13 22:50:05,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:50:05,930 INFO L225 Difference]: With dead ends: 388 [2022-07-13 22:50:05,930 INFO L226 Difference]: Without dead ends: 202 [2022-07-13 22:50:05,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:50:05,931 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 22 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:50:05,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 580 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:50:05,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-13 22:50:05,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2022-07-13 22:50:05,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 128 states have (on average 1.0859375) internal successors, (139), 133 states have internal predecessors, (139), 45 states have call successors, (45), 22 states have call predecessors, (45), 28 states have return successors, (53), 46 states have call predecessors, (53), 44 states have call successors, (53) [2022-07-13 22:50:05,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 237 transitions. [2022-07-13 22:50:05,946 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 237 transitions. Word has length 180 [2022-07-13 22:50:05,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:50:05,946 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 237 transitions. [2022-07-13 22:50:05,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-13 22:50:05,946 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 237 transitions. [2022-07-13 22:50:05,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-13 22:50:05,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:50:05,948 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:50:05,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 22:50:06,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-13 22:50:06,171 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:50:06,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:50:06,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1874383290, now seen corresponding path program 1 times [2022-07-13 22:50:06,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:50:06,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349935491] [2022-07-13 22:50:06,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:50:06,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:50:06,239 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:50:06,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937311011] [2022-07-13 22:50:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:50:06,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:50:06,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:50:06,241 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:50:06,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 22:50:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:06,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-13 22:50:06,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:50:06,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-13 22:50:07,202 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-13 22:50:07,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:50:07,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:50:07,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349935491] [2022-07-13 22:50:07,203 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:50:07,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937311011] [2022-07-13 22:50:07,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937311011] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:50:07,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:50:07,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 22:50:07,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394040553] [2022-07-13 22:50:07,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:50:07,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 22:50:07,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:50:07,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 22:50:07,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:50:07,206 INFO L87 Difference]: Start difference. First operand 202 states and 237 transitions. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 11 states have internal predecessors, (100), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 8 states have call predecessors, (30), 7 states have call successors, (30) [2022-07-13 22:50:07,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:50:07,701 INFO L93 Difference]: Finished difference Result 345 states and 393 transitions. [2022-07-13 22:50:07,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:50:07,701 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 11 states have internal predecessors, (100), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 8 states have call predecessors, (30), 7 states have call successors, (30) Word has length 186 [2022-07-13 22:50:07,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:50:07,703 INFO L225 Difference]: With dead ends: 345 [2022-07-13 22:50:07,703 INFO L226 Difference]: Without dead ends: 226 [2022-07-13 22:50:07,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 172 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-13 22:50:07,704 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 53 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 258 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:50:07,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 808 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 529 Invalid, 0 Unknown, 258 Unchecked, 0.4s Time] [2022-07-13 22:50:07,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-07-13 22:50:07,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 225. [2022-07-13 22:50:07,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 145 states have (on average 1.0620689655172413) internal successors, (154), 149 states have internal predecessors, (154), 47 states have call successors, (47), 27 states have call predecessors, (47), 32 states have return successors, (54), 48 states have call predecessors, (54), 46 states have call successors, (54) [2022-07-13 22:50:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 255 transitions. [2022-07-13 22:50:07,718 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 255 transitions. Word has length 186 [2022-07-13 22:50:07,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:50:07,719 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 255 transitions. [2022-07-13 22:50:07,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 11 states have internal predecessors, (100), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 8 states have call predecessors, (30), 7 states have call successors, (30) [2022-07-13 22:50:07,719 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 255 transitions. [2022-07-13 22:50:07,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-13 22:50:07,721 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:50:07,721 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 22:50:07,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 22:50:07,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-13 22:50:07,935 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:50:07,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:50:07,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1877903641, now seen corresponding path program 1 times [2022-07-13 22:50:07,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:50:07,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419328093] [2022-07-13 22:50:07,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:50:07,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:50:07,994 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:50:07,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150246706] [2022-07-13 22:50:07,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:50:07,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:50:07,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:50:07,996 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:50:08,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 22:50:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:50:08,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 2727 conjuncts, 170 conjunts are in the unsatisfiable core [2022-07-13 22:50:08,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:50:08,594 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:50:08,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-13 22:50:08,801 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-13 22:50:08,802 INFO L390 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 [2022-07-13 22:50:08,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-13 22:50:09,140 INFO L356 Elim1Store]: treesize reduction 123, result has 21.7 percent of original size [2022-07-13 22:50:09,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 117 treesize of output 130 [2022-07-13 22:50:09,225 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-13 22:50:09,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:50:09,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-13 22:50:09,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-13 22:50:09,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:50:09,321 INFO L356 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-07-13 22:50:09,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 34 [2022-07-13 22:50:09,692 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-13 22:50:09,693 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-13 22:50:09,858 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1804 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1804))) is different from true [2022-07-13 22:50:09,975 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1805 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_1805))) is different from true [2022-07-13 22:50:10,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:50:10,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:50:10,073 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2022-07-13 22:50:10,091 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-07-13 22:50:10,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-07-13 22:51:42,467 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 71 proven. 118 refuted. 0 times theorem prover too weak. 36 trivial. 6 not checked. [2022-07-13 22:51:42,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:51:43,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:51:43,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419328093] [2022-07-13 22:51:43,422 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:51:43,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150246706] [2022-07-13 22:51:43,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150246706] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:51:43,423 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:51:43,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-07-13 22:51:43,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338800431] [2022-07-13 22:51:43,423 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:51:43,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-13 22:51:43,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:51:43,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-13 22:51:43,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1331, Unknown=29, NotChecked=150, Total=1640 [2022-07-13 22:51:43,425 INFO L87 Difference]: Start difference. First operand 225 states and 255 transitions. Second operand has 32 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 29 states have internal predecessors, (106), 15 states have call successors, (30), 8 states have call predecessors, (30), 12 states have return successors, (29), 16 states have call predecessors, (29), 15 states have call successors, (29) [2022-07-13 22:52:17,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:52:17,845 INFO L93 Difference]: Finished difference Result 338 states and 387 transitions. [2022-07-13 22:52:17,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-13 22:52:17,845 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 29 states have internal predecessors, (106), 15 states have call successors, (30), 8 states have call predecessors, (30), 12 states have return successors, (29), 16 states have call predecessors, (29), 15 states have call successors, (29) Word has length 180 [2022-07-13 22:52:17,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:52:17,847 INFO L225 Difference]: With dead ends: 338 [2022-07-13 22:52:17,847 INFO L226 Difference]: Without dead ends: 287 [2022-07-13 22:52:17,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 188 SyntacticMatches, 23 SemanticMatches, 61 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 127.3s TimeCoverageRelationStatistics Valid=293, Invalid=3304, Unknown=71, NotChecked=238, Total=3906 [2022-07-13 22:52:17,849 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 151 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1392 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:52:17,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 819 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 620 Invalid, 0 Unknown, 1392 Unchecked, 0.5s Time] [2022-07-13 22:52:17,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-07-13 22:52:17,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 286. [2022-07-13 22:52:17,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 186 states have (on average 1.053763440860215) internal successors, (196), 190 states have internal predecessors, (196), 59 states have call successors, (59), 34 states have call predecessors, (59), 40 states have return successors, (74), 61 states have call predecessors, (74), 58 states have call successors, (74) [2022-07-13 22:52:17,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 329 transitions. [2022-07-13 22:52:17,867 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 329 transitions. Word has length 180 [2022-07-13 22:52:17,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:52:17,868 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 329 transitions. [2022-07-13 22:52:17,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 29 states have internal predecessors, (106), 15 states have call successors, (30), 8 states have call predecessors, (30), 12 states have return successors, (29), 16 states have call predecessors, (29), 15 states have call successors, (29) [2022-07-13 22:52:17,868 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 329 transitions. [2022-07-13 22:52:17,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-13 22:52:17,870 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:52:17,870 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 22:52:17,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 22:52:18,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 22:52:18,086 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:52:18,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:52:18,086 INFO L85 PathProgramCache]: Analyzing trace with hash 369698153, now seen corresponding path program 1 times [2022-07-13 22:52:18,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:52:18,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538857342] [2022-07-13 22:52:18,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:52:18,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:52:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:52:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:52:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:52:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:52:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:52:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:52:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:52:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:52:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:52:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:52:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:52:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:52:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:52:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 22:52:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:52:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:52:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 22:52:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 22:52:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:52:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:52:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:52:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:52:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:52:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 22:52:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-13 22:52:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-13 22:52:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-13 22:52:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-13 22:52:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-13 22:52:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-13 22:52:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-13 22:52:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:18,623 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-07-13 22:52:18,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:52:18,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538857342] [2022-07-13 22:52:18,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538857342] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:52:18,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936898566] [2022-07-13 22:52:18,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:52:18,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:52:18,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:52:18,628 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:52:18,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 22:52:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:19,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 2735 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:52:19,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:52:19,218 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-13 22:52:19,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:52:19,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936898566] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:52:19,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:52:19,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 11 [2022-07-13 22:52:19,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821222175] [2022-07-13 22:52:19,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:52:19,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:52:19,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:52:19,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:52:19,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:52:19,221 INFO L87 Difference]: Start difference. First operand 286 states and 329 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-13 22:52:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:52:19,259 INFO L93 Difference]: Finished difference Result 436 states and 503 transitions. [2022-07-13 22:52:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:52:19,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) Word has length 192 [2022-07-13 22:52:19,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:52:19,261 INFO L225 Difference]: With dead ends: 436 [2022-07-13 22:52:19,261 INFO L226 Difference]: Without dead ends: 212 [2022-07-13 22:52:19,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:52:19,262 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 2 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:52:19,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 848 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:52:19,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-13 22:52:19,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 209. [2022-07-13 22:52:19,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 134 states have (on average 1.0522388059701493) internal successors, (141), 137 states have internal predecessors, (141), 45 states have call successors, (45), 26 states have call predecessors, (45), 29 states have return successors, (53), 45 states have call predecessors, (53), 44 states have call successors, (53) [2022-07-13 22:52:19,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 239 transitions. [2022-07-13 22:52:19,275 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 239 transitions. Word has length 192 [2022-07-13 22:52:19,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:52:19,276 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 239 transitions. [2022-07-13 22:52:19,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-13 22:52:19,276 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 239 transitions. [2022-07-13 22:52:19,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-13 22:52:19,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:52:19,278 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 22:52:19,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 22:52:19,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-13 22:52:19,503 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:52:19,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:52:19,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1771608484, now seen corresponding path program 1 times [2022-07-13 22:52:19,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:52:19,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326288789] [2022-07-13 22:52:19,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:52:19,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:52:19,560 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:52:19,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023814527] [2022-07-13 22:52:19,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:52:19,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:52:19,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:52:19,562 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:52:19,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 22:52:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:52:20,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 2730 conjuncts, 116 conjunts are in the unsatisfiable core [2022-07-13 22:52:20,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:52:20,137 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:52:20,138 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-13 22:52:20,337 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-13 22:52:20,338 INFO L390 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 [2022-07-13 22:52:20,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-13 22:52:20,709 INFO L356 Elim1Store]: treesize reduction 112, result has 28.7 percent of original size [2022-07-13 22:52:20,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 88 treesize of output 114 [2022-07-13 22:52:20,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-13 22:52:20,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:52:20,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-13 22:52:20,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-13 22:52:20,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-13 22:52:21,387 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-13 22:52:21,388 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-13 22:52:21,523 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2202 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2202))) is different from true [2022-07-13 22:52:21,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:52:21,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-07-13 22:52:21,684 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-13 22:52:21,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-13 22:53:39,689 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 71 proven. 121 refuted. 0 times theorem prover too weak. 36 trivial. 3 not checked. [2022-07-13 22:53:39,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:53:40,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:53:40,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326288789] [2022-07-13 22:53:40,103 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:53:40,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023814527] [2022-07-13 22:53:40,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023814527] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:53:40,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:53:40,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-07-13 22:53:40,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284079999] [2022-07-13 22:53:40,104 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:53:40,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-13 22:53:40,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:53:40,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-13 22:53:40,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1060, Unknown=18, NotChecked=66, Total=1260 [2022-07-13 22:53:40,106 INFO L87 Difference]: Start difference. First operand 209 states and 239 transitions. Second operand has 29 states, 25 states have (on average 4.4) internal successors, (110), 27 states have internal predecessors, (110), 15 states have call successors, (31), 8 states have call predecessors, (31), 12 states have return successors, (30), 15 states have call predecessors, (30), 15 states have call successors, (30) [2022-07-13 22:54:01,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:54:01,751 INFO L93 Difference]: Finished difference Result 284 states and 327 transitions. [2022-07-13 22:54:01,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-13 22:54:01,752 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 4.4) internal successors, (110), 27 states have internal predecessors, (110), 15 states have call successors, (31), 8 states have call predecessors, (31), 12 states have return successors, (30), 15 states have call predecessors, (30), 15 states have call successors, (30) Word has length 186 [2022-07-13 22:54:01,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:54:01,754 INFO L225 Difference]: With dead ends: 284 [2022-07-13 22:54:01,754 INFO L226 Difference]: Without dead ends: 233 [2022-07-13 22:54:01,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 200 SyntacticMatches, 22 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 100.0s TimeCoverageRelationStatistics Valid=272, Invalid=2555, Unknown=39, NotChecked=104, Total=2970 [2022-07-13 22:54:01,756 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 165 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1038 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:54:01,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 624 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 400 Invalid, 0 Unknown, 1038 Unchecked, 0.3s Time] [2022-07-13 22:54:01,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-07-13 22:54:01,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 209. [2022-07-13 22:54:01,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 134 states have (on average 1.0522388059701493) internal successors, (141), 137 states have internal predecessors, (141), 45 states have call successors, (45), 26 states have call predecessors, (45), 29 states have return successors, (53), 45 states have call predecessors, (53), 44 states have call successors, (53) [2022-07-13 22:54:01,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 239 transitions. [2022-07-13 22:54:01,770 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 239 transitions. Word has length 186 [2022-07-13 22:54:01,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:54:01,771 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 239 transitions. [2022-07-13 22:54:01,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 4.4) internal successors, (110), 27 states have internal predecessors, (110), 15 states have call successors, (31), 8 states have call predecessors, (31), 12 states have return successors, (30), 15 states have call predecessors, (30), 15 states have call successors, (30) [2022-07-13 22:54:01,771 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 239 transitions. [2022-07-13 22:54:01,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-13 22:54:01,772 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:54:01,772 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 22:54:01,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-13 22:54:01,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:01,975 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:54:01,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:54:01,976 INFO L85 PathProgramCache]: Analyzing trace with hash -837678499, now seen corresponding path program 1 times [2022-07-13 22:54:01,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:54:01,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256584809] [2022-07-13 22:54:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:01,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:54:02,025 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:54:02,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431076906] [2022-07-13 22:54:02,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:02,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:02,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:54:02,027 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:54:02,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 22:54:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:54:02,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 2731 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:54:02,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:54:02,555 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-13 22:54:02,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:54:02,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:54:02,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256584809] [2022-07-13 22:54:02,556 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:54:02,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431076906] [2022-07-13 22:54:02,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431076906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:54:02,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:54:02,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:54:02,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718589555] [2022-07-13 22:54:02,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:54:02,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:54:02,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:54:02,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:54:02,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:54:02,559 INFO L87 Difference]: Start difference. First operand 209 states and 239 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-13 22:54:02,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:54:02,594 INFO L93 Difference]: Finished difference Result 329 states and 375 transitions. [2022-07-13 22:54:02,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:54:02,595 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) Word has length 186 [2022-07-13 22:54:02,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:54:02,596 INFO L225 Difference]: With dead ends: 329 [2022-07-13 22:54:02,596 INFO L226 Difference]: Without dead ends: 171 [2022-07-13 22:54:02,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:54:02,598 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 2 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:54:02,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 819 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:54:02,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-13 22:54:02,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-07-13 22:54:02,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 109 states have (on average 1.0458715596330275) internal successors, (114), 112 states have internal predecessors, (114), 37 states have call successors, (37), 22 states have call predecessors, (37), 24 states have return successors, (41), 36 states have call predecessors, (41), 36 states have call successors, (41) [2022-07-13 22:54:02,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 192 transitions. [2022-07-13 22:54:02,610 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 192 transitions. Word has length 186 [2022-07-13 22:54:02,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:54:02,610 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 192 transitions. [2022-07-13 22:54:02,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-13 22:54:02,611 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 192 transitions. [2022-07-13 22:54:02,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-13 22:54:02,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:54:02,612 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 22:54:02,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 22:54:02,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-13 22:54:02,840 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:54:02,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:54:02,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1569832216, now seen corresponding path program 1 times [2022-07-13 22:54:02,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:54:02,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556424058] [2022-07-13 22:54:02,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:02,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:54:02,907 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:54:02,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904093229] [2022-07-13 22:54:02,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:54:02,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:54:02,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:54:02,910 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:54:02,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 22:54:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:54:03,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 2772 conjuncts, 153 conjunts are in the unsatisfiable core [2022-07-13 22:54:03,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:54:03,463 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:54:03,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-13 22:54:03,660 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-13 22:54:03,660 INFO L390 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 [2022-07-13 22:54:03,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-13 22:54:03,989 INFO L356 Elim1Store]: treesize reduction 173, result has 26.4 percent of original size [2022-07-13 22:54:03,991 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 147 treesize of output 186 [2022-07-13 22:54:04,158 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-13 22:54:04,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:54:04,227 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-13 22:54:04,227 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2022-07-13 22:54:04,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-13 22:54:04,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:54:04,300 INFO L356 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2022-07-13 22:54:04,300 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 37 [2022-07-13 22:54:04,711 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-13 22:54:04,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-13 22:54:04,863 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2592 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2592) |c_#memory_$Pointer$.base|)) is different from true [2022-07-13 22:54:04,948 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2593 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_2593))) is different from true [2022-07-13 22:54:05,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:54:05,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:54:05,017 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2022-07-13 22:54:05,035 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-07-13 22:54:05,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25