./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_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 50333b6a17e96dff6400d2c6a85c0145ae494daf76266f6b6d6936a12a6b2527 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:44:27,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:44:27,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:44:27,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:44:27,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:44:27,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:44:27,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:44:27,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:44:27,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:44:27,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:44:27,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:44:27,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:44:27,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:44:27,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:44:27,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:44:27,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:44:27,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:44:27,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:44:27,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:44:27,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:44:27,929 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:44:27,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:44:27,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:44:27,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:44:27,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:44:27,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:44:27,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:44:27,938 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:44:27,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:44:27,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:44:27,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:44:27,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:44:27,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:44:27,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:44:27,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:44:27,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:44:27,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:44:27,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:44:27,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:44:27,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:44:27,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:44:27,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:44:27,950 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:44:27,982 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:44:27,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:44:27,983 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:44:27,983 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:44:27,984 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:44:27,984 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:44:27,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:44:27,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:44:27,985 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:44:27,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:44:27,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:44:27,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:44:27,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:44:27,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:44:27,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:44:27,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:44:27,987 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:44:27,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:44:27,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:44:27,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:44:27,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:44:27,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:44:27,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:44:27,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:44:27,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:44:27,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:44:27,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:44:27,989 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:44:27,989 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:44:27,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:44:27,990 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50333b6a17e96dff6400d2c6a85c0145ae494daf76266f6b6d6936a12a6b2527 [2022-07-21 09:44:28,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:44:28,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:44:28,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:44:28,338 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:44:28,338 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:44:28,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2022-07-21 09:44:28,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/008c0a84f/3c768cfcea4b4324a419c3212dfbeb95/FLAGb001008af [2022-07-21 09:44:29,148 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:44:29,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2022-07-21 09:44:29,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/008c0a84f/3c768cfcea4b4324a419c3212dfbeb95/FLAGb001008af [2022-07-21 09:44:29,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/008c0a84f/3c768cfcea4b4324a419c3212dfbeb95 [2022-07-21 09:44:29,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:44:29,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:44:29,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:44:29,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:44:29,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:44:29,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:44:29" (1/1) ... [2022-07-21 09:44:29,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a1b0b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:44:29, skipping insertion in model container [2022-07-21 09:44:29,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:44:29" (1/1) ... [2022-07-21 09:44:29,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:44:29,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:44:29,625 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_swap_harness.i[4493,4506] [2022-07-21 09:44:29,633 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_swap_harness.i[4553,4566] [2022-07-21 09:44:30,362 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:30,362 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:30,371 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:30,372 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:30,373 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:30,383 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:30,384 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:30,385 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:30,388 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:30,389 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:30,389 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:30,390 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:30,390 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:30,721 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:44:30,724 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:44:30,726 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:44:30,728 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:44:30,730 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:44:30,730 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:44:30,731 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:44:30,732 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:44:30,732 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:44:30,734 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:44:30,944 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:44:31,291 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,292 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,315 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,316 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,321 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,321 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,338 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,339 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,340 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,340 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,341 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,341 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,341 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:44:31,424 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:44:31,438 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_swap_harness.i[4493,4506] [2022-07-21 09:44:31,438 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_swap_harness.i[4553,4566] [2022-07-21 09:44:31,478 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,479 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,479 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,479 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,480 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,489 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,490 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,491 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,491 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,494 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,494 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,495 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,495 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,519 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:44:31,520 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:44:31,520 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:44:31,521 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:44:31,521 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:44:31,522 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:44:31,522 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:44:31,522 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:44:31,523 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:44:31,523 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:44:31,560 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:44:31,663 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,664 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,669 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,669 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,671 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,671 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,677 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,678 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,678 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,679 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,679 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,679 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,679 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:44:31,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:44:31,968 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:44:31,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:44:31 WrapperNode [2022-07-21 09:44:31,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:44:31,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:44:31,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:44:31,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:44:31,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:44:31" (1/1) ... [2022-07-21 09:44:32,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:44:31" (1/1) ... [2022-07-21 09:44:32,222 INFO L137 Inliner]: procedures = 774, calls = 2441, calls flagged for inlining = 66, calls inlined = 9, statements flattened = 599 [2022-07-21 09:44:32,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:44:32,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:44:32,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:44:32,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:44:32,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:44:31" (1/1) ... [2022-07-21 09:44:32,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:44:31" (1/1) ... [2022-07-21 09:44:32,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:44:31" (1/1) ... [2022-07-21 09:44:32,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:44:31" (1/1) ... [2022-07-21 09:44:32,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:44:31" (1/1) ... [2022-07-21 09:44:32,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:44:31" (1/1) ... [2022-07-21 09:44:32,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:44:31" (1/1) ... [2022-07-21 09:44:32,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:44:32,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:44:32,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:44:32,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:44:32,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:44:31" (1/1) ... [2022-07-21 09:44:32,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:44:32,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:44:32,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 09:44:32,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 09:44:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-21 09:44:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2022-07-21 09:44:32,382 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2022-07-21 09:44:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:44:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-21 09:44:32,383 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-21 09:44:32,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:44:32,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:44:32,383 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-07-21 09:44:32,383 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-07-21 09:44:32,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:44:32,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:44:32,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:44:32,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:44:32,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:44:32,384 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-21 09:44:32,385 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-21 09:44:32,385 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-21 09:44:32,385 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-21 09:44:32,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:44:32,385 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-21 09:44:32,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-21 09:44:32,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:44:32,385 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-21 09:44:32,386 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-21 09:44:32,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:44:32,386 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-07-21 09:44:32,386 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-07-21 09:44:32,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:44:32,387 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-07-21 09:44:32,387 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-07-21 09:44:32,387 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:44:32,387 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:44:32,387 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-07-21 09:44:32,387 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-07-21 09:44:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:44:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2022-07-21 09:44:32,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2022-07-21 09:44:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-21 09:44:32,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-21 09:44:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-21 09:44:32,389 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-21 09:44:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2022-07-21 09:44:32,393 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2022-07-21 09:44:32,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:44:32,694 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:44:32,696 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:44:33,427 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:44:33,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:44:33,434 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 09:44:33,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:44:33 BoogieIcfgContainer [2022-07-21 09:44:33,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:44:33,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:44:33,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:44:33,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:44:33,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:44:29" (1/3) ... [2022-07-21 09:44:33,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a846d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:44:33, skipping insertion in model container [2022-07-21 09:44:33,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:44:31" (2/3) ... [2022-07-21 09:44:33,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a846d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:44:33, skipping insertion in model container [2022-07-21 09:44:33,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:44:33" (3/3) ... [2022-07-21 09:44:33,443 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_swap_harness.i [2022-07-21 09:44:33,457 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:44:33,457 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:44:33,504 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:44:33,511 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@73e8bfbc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@35b0e636 [2022-07-21 09:44:33,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 09:44:33,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 83 states have (on average 1.180722891566265) internal successors, (98), 88 states have internal predecessors, (98), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-21 09:44:33,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-21 09:44:33,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:33,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:44:33,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:33,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:33,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1925006632, now seen corresponding path program 1 times [2022-07-21 09:44:33,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:33,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228036323] [2022-07-21 09:44:33,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:33,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:33,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 09:44:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:34,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:44:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:34,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:44:34,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:34,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228036323] [2022-07-21 09:44:34,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228036323] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:34,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:44:34,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 09:44:34,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248831221] [2022-07-21 09:44:34,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:34,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 09:44:34,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:34,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 09:44:34,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 09:44:34,088 INFO L87 Difference]: Start difference. First operand has 136 states, 83 states have (on average 1.180722891566265) internal successors, (98), 88 states have internal predecessors, (98), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 09:44:34,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:44:34,132 INFO L93 Difference]: Finished difference Result 268 states and 349 transitions. [2022-07-21 09:44:34,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 09:44:34,134 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-07-21 09:44:34,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:44:34,142 INFO L225 Difference]: With dead ends: 268 [2022-07-21 09:44:34,142 INFO L226 Difference]: Without dead ends: 131 [2022-07-21 09:44:34,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 09:44:34,150 INFO L413 NwaCegarLoop]: 166 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, 166 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 [2022-07-21 09:44:34,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:44:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-07-21 09:44:34,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-07-21 09:44:34,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 79 states have (on average 1.1518987341772151) internal successors, (91), 83 states have internal predecessors, (91), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-21 09:44:34,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 160 transitions. [2022-07-21 09:44:34,203 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 160 transitions. Word has length 25 [2022-07-21 09:44:34,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:44:34,203 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 160 transitions. [2022-07-21 09:44:34,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 09:44:34,203 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 160 transitions. [2022-07-21 09:44:34,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-21 09:44:34,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:34,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:44:34,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:44:34,206 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:34,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:34,207 INFO L85 PathProgramCache]: Analyzing trace with hash -69138074, now seen corresponding path program 1 times [2022-07-21 09:44:34,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:34,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774654282] [2022-07-21 09:44:34,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:34,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:34,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 09:44:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:34,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:44:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:34,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:44:34,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:34,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774654282] [2022-07-21 09:44:34,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774654282] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:34,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:44:34,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:44:34,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146439497] [2022-07-21 09:44:34,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:34,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:44:34,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:34,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:44:34,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:44:34,492 INFO L87 Difference]: Start difference. First operand 131 states and 160 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 09:44:34,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:44:34,531 INFO L93 Difference]: Finished difference Result 185 states and 229 transitions. [2022-07-21 09:44:34,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:44:34,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-07-21 09:44:34,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:44:34,534 INFO L225 Difference]: With dead ends: 185 [2022-07-21 09:44:34,535 INFO L226 Difference]: Without dead ends: 147 [2022-07-21 09:44:34,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:44:34,537 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 5 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:44:34,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 321 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:44:34,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-07-21 09:44:34,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 142. [2022-07-21 09:44:34,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 85 states have (on average 1.1529411764705881) internal successors, (98), 89 states have internal predecessors, (98), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-21 09:44:34,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 177 transitions. [2022-07-21 09:44:34,559 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 177 transitions. Word has length 25 [2022-07-21 09:44:34,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:44:34,560 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 177 transitions. [2022-07-21 09:44:34,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 09:44:34,560 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 177 transitions. [2022-07-21 09:44:34,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-21 09:44:34,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:34,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:44:34,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 09:44:34,563 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:34,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:34,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1141503883, now seen corresponding path program 1 times [2022-07-21 09:44:34,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:34,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23048557] [2022-07-21 09:44:34,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:34,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:34,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 09:44:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:34,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:44:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:44:34,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:34,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23048557] [2022-07-21 09:44:34,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23048557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:34,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:44:34,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:44:34,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21586241] [2022-07-21 09:44:34,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:34,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:44:34,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:34,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:44:34,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:44:34,808 INFO L87 Difference]: Start difference. First operand 142 states and 177 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 09:44:34,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:44:34,843 INFO L93 Difference]: Finished difference Result 190 states and 234 transitions. [2022-07-21 09:44:34,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:44:34,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-07-21 09:44:34,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:44:34,849 INFO L225 Difference]: With dead ends: 190 [2022-07-21 09:44:34,851 INFO L226 Difference]: Without dead ends: 151 [2022-07-21 09:44:34,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:44:34,854 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 2 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:44:34,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 320 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:44:34,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-21 09:44:34,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-21 09:44:34,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.1333333333333333) internal successors, (102), 93 states have internal predecessors, (102), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-07-21 09:44:34,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 188 transitions. [2022-07-21 09:44:34,879 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 188 transitions. Word has length 26 [2022-07-21 09:44:34,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:44:34,879 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 188 transitions. [2022-07-21 09:44:34,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 09:44:34,880 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 188 transitions. [2022-07-21 09:44:34,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-21 09:44:34,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:34,887 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:44:34,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 09:44:34,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:34,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:34,889 INFO L85 PathProgramCache]: Analyzing trace with hash -478144861, now seen corresponding path program 1 times [2022-07-21 09:44:34,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:34,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034576507] [2022-07-21 09:44:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:34,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:34,999 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:44:35,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437690368] [2022-07-21 09:44:35,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:35,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:44:35,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:44:35,004 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:44:35,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:44:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:35,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:44:35,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:44:35,613 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-21 09:44:35,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:44:35,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:35,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034576507] [2022-07-21 09:44:35,614 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:44:35,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437690368] [2022-07-21 09:44:35,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437690368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:35,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:44:35,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:44:35,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167642470] [2022-07-21 09:44:35,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:35,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:44:35,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:35,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:44:35,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:44:35,616 INFO L87 Difference]: Start difference. First operand 151 states and 188 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 09:44:35,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:44:35,661 INFO L93 Difference]: Finished difference Result 301 states and 381 transitions. [2022-07-21 09:44:35,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:44:35,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 126 [2022-07-21 09:44:35,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:44:35,665 INFO L225 Difference]: With dead ends: 301 [2022-07-21 09:44:35,665 INFO L226 Difference]: Without dead ends: 156 [2022-07-21 09:44:35,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:44:35,670 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 2 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 623 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 [2022-07-21 09:44:35,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 623 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:44:35,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-07-21 09:44:35,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-07-21 09:44:35,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 94 states have (on average 1.127659574468085) internal successors, (106), 97 states have internal predecessors, (106), 44 states have call successors, (44), 16 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2022-07-21 09:44:35,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 193 transitions. [2022-07-21 09:44:35,692 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 193 transitions. Word has length 126 [2022-07-21 09:44:35,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:44:35,694 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 193 transitions. [2022-07-21 09:44:35,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 09:44:35,694 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 193 transitions. [2022-07-21 09:44:35,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-21 09:44:35,705 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:35,705 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-21 09:44:35,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 09:44:35,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:44:35,929 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:35,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:35,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1837351329, now seen corresponding path program 1 times [2022-07-21 09:44:35,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:35,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742299207] [2022-07-21 09:44:35,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:35,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:44:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 09:44:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:44:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:44:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:44:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:44:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:44:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:44:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:44:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:44:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 09:44:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 09:44:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:36,661 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-21 09:44:36,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:36,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742299207] [2022-07-21 09:44:36,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742299207] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:44:36,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036776691] [2022-07-21 09:44:36,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:36,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:44:36,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:44:36,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:44:36,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:44:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:37,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 2482 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-21 09:44:37,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:44:37,328 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 [2022-07-21 09:44:37,584 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 09:44:37,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:44:37,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036776691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:37,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:44:37,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 22 [2022-07-21 09:44:37,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219682265] [2022-07-21 09:44:37,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:37,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 09:44:37,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:37,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 09:44:37,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-07-21 09:44:37,587 INFO L87 Difference]: Start difference. First operand 156 states and 193 transitions. Second operand has 13 states, 12 states have (on average 6.5) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2022-07-21 09:44:37,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:44:37,740 INFO L93 Difference]: Finished difference Result 313 states and 384 transitions. [2022-07-21 09:44:37,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 09:44:37,741 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.5) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 138 [2022-07-21 09:44:37,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:44:37,744 INFO L225 Difference]: With dead ends: 313 [2022-07-21 09:44:37,744 INFO L226 Difference]: Without dead ends: 170 [2022-07-21 09:44:37,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2022-07-21 09:44:37,747 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 25 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:44:37,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1049 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 58 Unchecked, 0.1s Time] [2022-07-21 09:44:37,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-21 09:44:37,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 165. [2022-07-21 09:44:37,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 105 states have internal predecessors, (116), 44 states have call successors, (44), 17 states have call predecessors, (44), 18 states have return successors, (44), 43 states have call predecessors, (44), 42 states have call successors, (44) [2022-07-21 09:44:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 204 transitions. [2022-07-21 09:44:37,782 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 204 transitions. Word has length 138 [2022-07-21 09:44:37,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:44:37,783 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 204 transitions. [2022-07-21 09:44:37,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.5) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2022-07-21 09:44:37,784 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 204 transitions. [2022-07-21 09:44:37,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 09:44:37,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:37,786 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-21 09:44:37,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-21 09:44:37,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:44:38,000 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:38,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:38,000 INFO L85 PathProgramCache]: Analyzing trace with hash -484295599, now seen corresponding path program 1 times [2022-07-21 09:44:38,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:38,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384750994] [2022-07-21 09:44:38,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:38,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:44:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 09:44:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:44:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:44:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:44:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:44:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:44:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 09:44:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 09:44:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:44:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 09:44:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-21 09:44:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:38,620 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-21 09:44:38,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:38,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384750994] [2022-07-21 09:44:38,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384750994] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:44:38,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388417697] [2022-07-21 09:44:38,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:38,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:44:38,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:44:38,624 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:44:38,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:44:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-21 09:44:39,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:44:39,177 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-21 09:44:39,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:44:39,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388417697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:39,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:44:39,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2022-07-21 09:44:39,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96013642] [2022-07-21 09:44:39,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:39,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:44:39,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:39,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:44:39,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2022-07-21 09:44:39,180 INFO L87 Difference]: Start difference. First operand 165 states and 204 transitions. Second operand has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-21 09:44:39,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:44:39,283 INFO L93 Difference]: Finished difference Result 278 states and 340 transitions. [2022-07-21 09:44:39,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:44:39,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 139 [2022-07-21 09:44:39,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:44:39,286 INFO L225 Difference]: With dead ends: 278 [2022-07-21 09:44:39,286 INFO L226 Difference]: Without dead ends: 168 [2022-07-21 09:44:39,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-07-21 09:44:39,287 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 2 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:44:39,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 859 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:44:39,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-21 09:44:39,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-07-21 09:44:39,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 104 states have (on average 1.1346153846153846) internal successors, (118), 108 states have internal predecessors, (118), 44 states have call successors, (44), 17 states have call predecessors, (44), 19 states have return successors, (47), 43 states have call predecessors, (47), 42 states have call successors, (47) [2022-07-21 09:44:39,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 209 transitions. [2022-07-21 09:44:39,297 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 209 transitions. Word has length 139 [2022-07-21 09:44:39,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:44:39,298 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 209 transitions. [2022-07-21 09:44:39,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-21 09:44:39,299 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 209 transitions. [2022-07-21 09:44:39,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-21 09:44:39,300 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:39,300 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-21 09:44:39,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 09:44:39,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:44:39,516 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:39,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:39,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1344725155, now seen corresponding path program 1 times [2022-07-21 09:44:39,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:39,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511439866] [2022-07-21 09:44:39,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:39,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:44:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 09:44:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:44:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:44:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:44:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:44:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:44:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:44:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:44:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:44:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 09:44:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 09:44:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:39,946 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-21 09:44:39,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:39,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511439866] [2022-07-21 09:44:39,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511439866] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:44:39,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152566784] [2022-07-21 09:44:39,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:39,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:44:39,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:44:39,949 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:44:39,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:44:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:40,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 2477 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 09:44:40,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:44:40,552 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 09:44:40,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:44:40,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152566784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:40,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:44:40,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-21 09:44:40,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849993678] [2022-07-21 09:44:40,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:40,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:44:40,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:40,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:44:40,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:44:40,555 INFO L87 Difference]: Start difference. First operand 168 states and 209 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-21 09:44:40,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:44:40,691 INFO L93 Difference]: Finished difference Result 321 states and 402 transitions. [2022-07-21 09:44:40,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:44:40,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 138 [2022-07-21 09:44:40,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:44:40,693 INFO L225 Difference]: With dead ends: 321 [2022-07-21 09:44:40,693 INFO L226 Difference]: Without dead ends: 173 [2022-07-21 09:44:40,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:44:40,695 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 169 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:44:40,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 387 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:44:40,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-21 09:44:40,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-07-21 09:44:40,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 107 states have (on average 1.1214953271028036) internal successors, (120), 112 states have internal predecessors, (120), 45 states have call successors, (45), 17 states have call predecessors, (45), 20 states have return successors, (53), 44 states have call predecessors, (53), 43 states have call successors, (53) [2022-07-21 09:44:40,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 218 transitions. [2022-07-21 09:44:40,707 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 218 transitions. Word has length 138 [2022-07-21 09:44:40,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:44:40,707 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 218 transitions. [2022-07-21 09:44:40,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-21 09:44:40,708 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 218 transitions. [2022-07-21 09:44:40,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 09:44:40,709 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:40,710 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-21 09:44:40,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 09:44:40,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:44:40,927 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:40,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:40,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1514885783, now seen corresponding path program 1 times [2022-07-21 09:44:40,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:40,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852697769] [2022-07-21 09:44:40,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:40,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:44:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 09:44:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:44:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:44:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:44:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:44:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:44:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:44:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:44:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 09:44:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:44:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 09:44:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 09:44:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,404 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-21 09:44:41,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:41,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852697769] [2022-07-21 09:44:41,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852697769] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:44:41,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037173728] [2022-07-21 09:44:41,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:41,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:44:41,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:44:41,407 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:44:41,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:44:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:41,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 2506 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-21 09:44:41,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:44:42,783 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 [2022-07-21 09:44:48,674 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-21 09:44:48,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:44:48,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037173728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:48,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:44:48,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-07-21 09:44:48,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18234105] [2022-07-21 09:44:48,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:48,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:44:48,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:48,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:44:48,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=175, Unknown=3, NotChecked=26, Total=240 [2022-07-21 09:44:48,676 INFO L87 Difference]: Start difference. First operand 173 states and 218 transitions. Second operand has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 09:44:48,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:44:48,817 INFO L93 Difference]: Finished difference Result 338 states and 429 transitions. [2022-07-21 09:44:48,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:44:48,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 144 [2022-07-21 09:44:48,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:44:48,819 INFO L225 Difference]: With dead ends: 338 [2022-07-21 09:44:48,819 INFO L226 Difference]: Without dead ends: 175 [2022-07-21 09:44:48,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=51, Invalid=222, Unknown=3, NotChecked=30, Total=306 [2022-07-21 09:44:48,820 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 5 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:44:48,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 871 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 231 Unchecked, 0.1s Time] [2022-07-21 09:44:48,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-21 09:44:48,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-07-21 09:44:48,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.1192660550458715) internal successors, (122), 113 states have internal predecessors, (122), 45 states have call successors, (45), 18 states have call predecessors, (45), 20 states have return successors, (53), 44 states have call predecessors, (53), 43 states have call successors, (53) [2022-07-21 09:44:48,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 220 transitions. [2022-07-21 09:44:48,832 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 220 transitions. Word has length 144 [2022-07-21 09:44:48,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:44:48,832 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 220 transitions. [2022-07-21 09:44:48,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 09:44:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 220 transitions. [2022-07-21 09:44:48,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 09:44:48,834 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:48,835 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-21 09:44:48,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 09:44:49,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:44:49,063 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:49,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:49,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1222683155, now seen corresponding path program 1 times [2022-07-21 09:44:49,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:49,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747738882] [2022-07-21 09:44:49,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:49,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:49,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:44:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:51,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:51,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:51,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 09:44:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:51,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:44:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:51,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:44:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:51,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:51,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:51,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:51,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:44:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:51,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:44:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:52,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:52,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:44:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:44:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:52,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:44:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:52,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:44:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:52,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 09:44:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:52,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:52,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:53,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:53,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:53,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:44:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:53,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 09:44:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:53,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 09:44:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-21 09:44:53,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:53,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747738882] [2022-07-21 09:44:53,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747738882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:53,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:44:53,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-07-21 09:44:53,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922257570] [2022-07-21 09:44:53,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:53,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-21 09:44:53,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:53,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-21 09:44:53,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2022-07-21 09:44:53,384 INFO L87 Difference]: Start difference. First operand 175 states and 220 transitions. Second operand has 31 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 26 states have internal predecessors, (78), 15 states have call successors, (25), 5 states have call predecessors, (25), 8 states have return successors, (24), 13 states have call predecessors, (24), 14 states have call successors, (24) [2022-07-21 09:44:59,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:44:59,430 INFO L93 Difference]: Finished difference Result 268 states and 362 transitions. [2022-07-21 09:44:59,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-21 09:44:59,431 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 26 states have internal predecessors, (78), 15 states have call successors, (25), 5 states have call predecessors, (25), 8 states have return successors, (24), 13 states have call predecessors, (24), 14 states have call successors, (24) Word has length 149 [2022-07-21 09:44:59,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:44:59,433 INFO L225 Difference]: With dead ends: 268 [2022-07-21 09:44:59,433 INFO L226 Difference]: Without dead ends: 254 [2022-07-21 09:44:59,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 45 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=320, Invalid=2986, Unknown=0, NotChecked=0, Total=3306 [2022-07-21 09:44:59,435 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 268 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 3435 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 3784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 3435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:44:59,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 1295 Invalid, 3784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 3435 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-21 09:44:59,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-07-21 09:44:59,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 197. [2022-07-21 09:44:59,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 124 states have (on average 1.1290322580645162) internal successors, (140), 130 states have internal predecessors, (140), 49 states have call successors, (49), 18 states have call predecessors, (49), 23 states have return successors, (66), 49 states have call predecessors, (66), 47 states have call successors, (66) [2022-07-21 09:44:59,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 255 transitions. [2022-07-21 09:44:59,452 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 255 transitions. Word has length 149 [2022-07-21 09:44:59,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:44:59,453 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 255 transitions. [2022-07-21 09:44:59,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 26 states have internal predecessors, (78), 15 states have call successors, (25), 5 states have call predecessors, (25), 8 states have return successors, (24), 13 states have call predecessors, (24), 14 states have call successors, (24) [2022-07-21 09:44:59,453 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 255 transitions. [2022-07-21 09:44:59,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 09:44:59,455 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:59,455 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-21 09:44:59,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 09:44:59,456 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:59,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:59,456 INFO L85 PathProgramCache]: Analyzing trace with hash 829656145, now seen corresponding path program 1 times [2022-07-21 09:44:59,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:59,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601167729] [2022-07-21 09:44:59,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:59,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:44:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 09:44:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:44:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:44:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:44:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:44:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:44:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:44:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:44:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:44:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 09:44:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:44:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 09:44:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 09:44:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-21 09:44:59,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:59,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601167729] [2022-07-21 09:44:59,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601167729] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:59,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:44:59,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:44:59,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379724114] [2022-07-21 09:44:59,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:59,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:44:59,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:59,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:44:59,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:44:59,869 INFO L87 Difference]: Start difference. First operand 197 states and 255 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 09:45:00,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:45:00,284 INFO L93 Difference]: Finished difference Result 361 states and 459 transitions. [2022-07-21 09:45:00,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:45:00,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 149 [2022-07-21 09:45:00,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:45:00,287 INFO L225 Difference]: With dead ends: 361 [2022-07-21 09:45:00,287 INFO L226 Difference]: Without dead ends: 206 [2022-07-21 09:45:00,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:45:00,288 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 116 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:45:00,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 456 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 09:45:00,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-07-21 09:45:00,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 185. [2022-07-21 09:45:00,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 115 states have (on average 1.1130434782608696) internal successors, (128), 120 states have internal predecessors, (128), 48 states have call successors, (48), 17 states have call predecessors, (48), 21 states have return successors, (57), 48 states have call predecessors, (57), 46 states have call successors, (57) [2022-07-21 09:45:00,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 233 transitions. [2022-07-21 09:45:00,330 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 233 transitions. Word has length 149 [2022-07-21 09:45:00,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:45:00,331 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 233 transitions. [2022-07-21 09:45:00,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 09:45:00,331 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 233 transitions. [2022-07-21 09:45:00,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-21 09:45:00,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:45:00,333 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-21 09:45:00,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 09:45:00,334 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:45:00,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:45:00,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1154155911, now seen corresponding path program 1 times [2022-07-21 09:45:00,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:45:00,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746430939] [2022-07-21 09:45:00,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:00,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:45:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:45:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:45:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:45:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 09:45:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:45:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:45:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:45:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:45:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:45:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:45:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:45:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:45:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:45:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:45:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:45:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 09:45:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:45:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:45:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:45:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:45:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:45:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:45:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 09:45:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:00,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-21 09:45:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-21 09:45:01,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:45:01,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746430939] [2022-07-21 09:45:01,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746430939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:45:01,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:45:01,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 09:45:01,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666136052] [2022-07-21 09:45:01,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:45:01,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 09:45:01,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:45:01,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 09:45:01,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-07-21 09:45:01,029 INFO L87 Difference]: Start difference. First operand 185 states and 233 transitions. Second operand has 19 states, 19 states have (on average 4.0) internal successors, (76), 15 states have internal predecessors, (76), 8 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-21 09:45:02,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:45:02,455 INFO L93 Difference]: Finished difference Result 246 states and 319 transitions. [2022-07-21 09:45:02,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-21 09:45:02,456 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.0) internal successors, (76), 15 states have internal predecessors, (76), 8 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 150 [2022-07-21 09:45:02,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:45:02,458 INFO L225 Difference]: With dead ends: 246 [2022-07-21 09:45:02,458 INFO L226 Difference]: Without dead ends: 232 [2022-07-21 09:45:02,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 09:45:02,459 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 155 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 1656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:45:02,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 1050 Invalid, 1656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1473 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 09:45:02,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-07-21 09:45:02,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 201. [2022-07-21 09:45:02,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 125 states have (on average 1.112) internal successors, (139), 130 states have internal predecessors, (139), 54 states have call successors, (54), 17 states have call predecessors, (54), 21 states have return successors, (64), 55 states have call predecessors, (64), 52 states have call successors, (64) [2022-07-21 09:45:02,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 257 transitions. [2022-07-21 09:45:02,476 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 257 transitions. Word has length 150 [2022-07-21 09:45:02,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:45:02,476 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 257 transitions. [2022-07-21 09:45:02,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.0) internal successors, (76), 15 states have internal predecessors, (76), 8 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-21 09:45:02,477 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 257 transitions. [2022-07-21 09:45:02,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-21 09:45:02,478 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:45:02,479 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-21 09:45:02,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 09:45:02,479 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:45:02,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:45:02,479 INFO L85 PathProgramCache]: Analyzing trace with hash 539994885, now seen corresponding path program 1 times [2022-07-21 09:45:02,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:45:02,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073323304] [2022-07-21 09:45:02,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:02,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:45:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:02,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:45:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:02,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:45:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:02,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:45:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:02,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 09:45:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:02,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:45:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:45:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:45:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:45:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:45:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:45:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:45:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:45:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:45:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:45:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:45:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 09:45:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:45:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:45:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:45:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:45:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:45:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:45:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 09:45:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-21 09:45:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:45:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:45:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-21 09:45:03,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:45:03,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073323304] [2022-07-21 09:45:03,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073323304] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:45:03,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334025206] [2022-07-21 09:45:03,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:03,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:03,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:45:03,250 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:45:03,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 09:45:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:03,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 67 conjunts are in the unsatisfiable core [2022-07-21 09:45:03,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:45:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-21 09:45:03,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:45:03,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334025206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:45:03,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:45:03,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2022-07-21 09:45:03,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366964926] [2022-07-21 09:45:03,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:45:03,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:45:03,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:45:03,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:45:03,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:45:03,921 INFO L87 Difference]: Start difference. First operand 201 states and 257 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-07-21 09:45:04,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:45:04,060 INFO L93 Difference]: Finished difference Result 402 states and 517 transitions. [2022-07-21 09:45:04,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:45:04,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) Word has length 161 [2022-07-21 09:45:04,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:45:04,064 INFO L225 Difference]: With dead ends: 402 [2022-07-21 09:45:04,064 INFO L226 Difference]: Without dead ends: 205 [2022-07-21 09:45:04,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:45:04,066 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 19 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:45:04,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 773 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:45:04,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-21 09:45:04,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2022-07-21 09:45:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 127 states have (on average 1.110236220472441) internal successors, (141), 134 states have internal predecessors, (141), 54 states have call successors, (54), 17 states have call predecessors, (54), 23 states have return successors, (66), 55 states have call predecessors, (66), 52 states have call successors, (66) [2022-07-21 09:45:04,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 261 transitions. [2022-07-21 09:45:04,084 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 261 transitions. Word has length 161 [2022-07-21 09:45:04,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:45:04,086 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 261 transitions. [2022-07-21 09:45:04,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-07-21 09:45:04,086 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 261 transitions. [2022-07-21 09:45:04,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 09:45:04,088 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:45:04,089 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-21 09:45:04,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 09:45:04,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:04,303 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:45:04,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:45:04,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1216251191, now seen corresponding path program 1 times [2022-07-21 09:45:04,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:45:04,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309987682] [2022-07-21 09:45:04,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:04,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:45:04,369 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:45:04,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537974751] [2022-07-21 09:45:04,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:04,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:04,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:45:04,371 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:45:04,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 09:45:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:04,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-21 09:45:04,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:45:04,972 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 63 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-21 09:45:04,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:45:05,378 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-21 09:45:05,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:45:05,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309987682] [2022-07-21 09:45:05,378 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:45:05,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537974751] [2022-07-21 09:45:05,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537974751] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:45:05,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:45:05,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2022-07-21 09:45:05,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121956486] [2022-07-21 09:45:05,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:45:05,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 09:45:05,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:45:05,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 09:45:05,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:45:05,380 INFO L87 Difference]: Start difference. First operand 205 states and 261 transitions. Second operand has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 6 states have call successors, (31), 3 states have call predecessors, (31), 6 states have return successors, (31), 6 states have call predecessors, (31), 5 states have call successors, (31) [2022-07-21 09:45:05,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:45:05,549 INFO L93 Difference]: Finished difference Result 398 states and 507 transitions. [2022-07-21 09:45:05,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:45:05,550 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 6 states have call successors, (31), 3 states have call predecessors, (31), 6 states have return successors, (31), 6 states have call predecessors, (31), 5 states have call successors, (31) Word has length 167 [2022-07-21 09:45:05,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:45:05,552 INFO L225 Difference]: With dead ends: 398 [2022-07-21 09:45:05,552 INFO L226 Difference]: Without dead ends: 203 [2022-07-21 09:45:05,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 319 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:45:05,553 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 5 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:45:05,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1694 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:45:05,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-21 09:45:05,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 201. [2022-07-21 09:45:05,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 125 states have (on average 1.088) internal successors, (136), 130 states have internal predecessors, (136), 54 states have call successors, (54), 17 states have call predecessors, (54), 21 states have return successors, (64), 55 states have call predecessors, (64), 52 states have call successors, (64) [2022-07-21 09:45:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 254 transitions. [2022-07-21 09:45:05,568 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 254 transitions. Word has length 167 [2022-07-21 09:45:05,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:45:05,569 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 254 transitions. [2022-07-21 09:45:05,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 6 states have call successors, (31), 3 states have call predecessors, (31), 6 states have return successors, (31), 6 states have call predecessors, (31), 5 states have call successors, (31) [2022-07-21 09:45:05,569 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 254 transitions. [2022-07-21 09:45:05,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-21 09:45:05,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:45:05,571 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-21 09:45:05,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 09:45:05,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:05,787 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:45:05,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:45:05,788 INFO L85 PathProgramCache]: Analyzing trace with hash -382620781, now seen corresponding path program 1 times [2022-07-21 09:45:05,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:45:05,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435918581] [2022-07-21 09:45:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:05,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:45:05,847 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:45:05,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105057248] [2022-07-21 09:45:05,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:05,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:05,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:45:05,849 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:45:05,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 09:45:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:06,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 2746 conjuncts, 205 conjunts are in the unsatisfiable core [2022-07-21 09:45:06,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:45:06,566 INFO L356 Elim1Store]: treesize reduction 117, result has 12.0 percent of original size [2022-07-21 09:45:06,566 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 8 case distinctions, treesize of input 55 treesize of output 54 [2022-07-21 09:45:06,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-21 09:45:07,195 INFO L356 Elim1Store]: treesize reduction 114, result has 27.4 percent of original size [2022-07-21 09:45:07,196 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 238 treesize of output 257 [2022-07-21 09:45:07,520 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 [2022-07-21 09:45:07,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:45:08,042 INFO L356 Elim1Store]: treesize reduction 664, result has 22.1 percent of original size [2022-07-21 09:45:08,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 430 treesize of output 572 [2022-07-21 09:45:53,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 55 treesize of output 35 [2022-07-21 09:45:53,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2022-07-21 09:45:54,254 INFO L356 Elim1Store]: treesize reduction 114, result has 27.4 percent of original size [2022-07-21 09:45:54,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 238 treesize of output 257 [2022-07-21 09:45:54,275 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:45:54,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 09:45:55,363 INFO L356 Elim1Store]: treesize reduction 409, result has 30.6 percent of original size [2022-07-21 09:45:55,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 285 treesize of output 430 [2022-07-21 09:45:55,430 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:45:55,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 58 [2022-07-21 09:46:27,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:46:27,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:46:27,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:46:27,648 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-21 09:46:27,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 92 [2022-07-21 09:46:27,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:46:27,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:46:27,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2022-07-21 09:46:27,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 20 [2022-07-21 09:46:27,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 56 [2022-07-21 09:46:27,787 INFO L356 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2022-07-21 09:46:27,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 56 [2022-07-21 09:46:28,931 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_table_swap_harness_~#b~8#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_aws_hash_table_swap_~#tmp~2#1.base_29| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_swap_~#tmp~2#1.base_29|) 0))) (and (not (= .cse0 0)) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_swap_harness_~#b~8#1.base_BEFORE_CALL_6|) 0) .cse0) (< (+ .cse0 1) |v_ULTIMATE.start_aws_hash_table_swap_~#tmp~2#1.base_29|) (not (= |v_ULTIMATE.start_aws_hash_table_swap_~#tmp~2#1.base_29| |v_ULTIMATE.start_aws_hash_table_swap_harness_~#b~8#1.base_BEFORE_CALL_6|))))) is different from true [2022-07-21 09:46:32,347 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 60 proven. 10 refuted. 4 times theorem prover too weak. 46 trivial. 1 not checked. [2022-07-21 09:46:32,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:46:32,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:46:32,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435918581] [2022-07-21 09:46:32,993 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:46:32,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105057248] [2022-07-21 09:46:32,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105057248] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:46:32,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:46:32,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2022-07-21 09:46:32,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288762063] [2022-07-21 09:46:32,994 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:46:32,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-21 09:46:32,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:46:32,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-21 09:46:32,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1742, Unknown=86, NotChecked=86, Total=2070 [2022-07-21 09:46:32,996 INFO L87 Difference]: Start difference. First operand 201 states and 254 transitions. Second operand has 40 states, 34 states have (on average 2.7058823529411766) internal successors, (92), 35 states have internal predecessors, (92), 18 states have call successors, (27), 7 states have call predecessors, (27), 13 states have return successors, (26), 17 states have call predecessors, (26), 17 states have call successors, (26) [2022-07-21 09:46:40,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:46:40,732 INFO L93 Difference]: Finished difference Result 315 states and 399 transitions. [2022-07-21 09:46:40,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-21 09:46:40,732 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 34 states have (on average 2.7058823529411766) internal successors, (92), 35 states have internal predecessors, (92), 18 states have call successors, (27), 7 states have call predecessors, (27), 13 states have return successors, (26), 17 states have call predecessors, (26), 17 states have call successors, (26) Word has length 161 [2022-07-21 09:46:40,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:46:40,734 INFO L225 Difference]: With dead ends: 315 [2022-07-21 09:46:40,734 INFO L226 Difference]: Without dead ends: 298 [2022-07-21 09:46:40,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 125 SyntacticMatches, 9 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=201, Invalid=2263, Unknown=90, NotChecked=98, Total=2652 [2022-07-21 09:46:40,736 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 64 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2394 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:46:40,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 1562 Invalid, 2762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 328 Invalid, 0 Unknown, 2394 Unchecked, 0.4s Time] [2022-07-21 09:46:40,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-07-21 09:46:40,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 288. [2022-07-21 09:46:40,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 180 states have (on average 1.0833333333333333) internal successors, (195), 185 states have internal predecessors, (195), 75 states have call successors, (75), 27 states have call predecessors, (75), 32 states have return successors, (98), 77 states have call predecessors, (98), 73 states have call successors, (98) [2022-07-21 09:46:40,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 368 transitions. [2022-07-21 09:46:40,756 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 368 transitions. Word has length 161 [2022-07-21 09:46:40,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:46:40,757 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 368 transitions. [2022-07-21 09:46:40,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 34 states have (on average 2.7058823529411766) internal successors, (92), 35 states have internal predecessors, (92), 18 states have call successors, (27), 7 states have call predecessors, (27), 13 states have return successors, (26), 17 states have call predecessors, (26), 17 states have call successors, (26) [2022-07-21 09:46:40,757 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 368 transitions. [2022-07-21 09:46:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 09:46:40,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:46:40,759 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1] [2022-07-21 09:46:40,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 09:46:40,975 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,SelfDestructingSolverStorable13 [2022-07-21 09:46:40,975 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:46:40,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:46:40,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1012559470, now seen corresponding path program 1 times [2022-07-21 09:46:40,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:46:40,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155722467] [2022-07-21 09:46:40,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:40,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:46:41,033 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:46:41,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571631852] [2022-07-21 09:46:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:41,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:41,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:46:41,036 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:46:41,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 09:46:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:41,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 09:46:41,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:46:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-21 09:46:41,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:46:41,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:46:41,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155722467] [2022-07-21 09:46:41,632 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:46:41,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571631852] [2022-07-21 09:46:41,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571631852] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:46:41,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:46:41,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:46:41,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452122864] [2022-07-21 09:46:41,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:46:41,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:46:41,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:46:41,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:46:41,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:46:41,636 INFO L87 Difference]: Start difference. First operand 288 states and 368 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-21 09:46:41,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:46:41,689 INFO L93 Difference]: Finished difference Result 461 states and 596 transitions. [2022-07-21 09:46:41,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:46:41,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) Word has length 167 [2022-07-21 09:46:41,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:46:41,692 INFO L225 Difference]: With dead ends: 461 [2022-07-21 09:46:41,692 INFO L226 Difference]: Without dead ends: 246 [2022-07-21 09:46:41,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:46:41,694 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 2 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 926 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 [2022-07-21 09:46:41,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 926 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:46:41,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-07-21 09:46:41,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2022-07-21 09:46:41,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 152 states have (on average 1.0657894736842106) internal successors, (162), 156 states have internal predecessors, (162), 64 states have call successors, (64), 27 states have call predecessors, (64), 29 states have return successors, (75), 63 states have call predecessors, (75), 62 states have call successors, (75) [2022-07-21 09:46:41,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 301 transitions. [2022-07-21 09:46:41,714 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 301 transitions. Word has length 167 [2022-07-21 09:46:41,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:46:41,715 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 301 transitions. [2022-07-21 09:46:41,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-21 09:46:41,715 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 301 transitions. [2022-07-21 09:46:41,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-21 09:46:41,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:46:41,717 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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, 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] [2022-07-21 09:46:41,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 09:46:41,939 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,SelfDestructingSolverStorable14 [2022-07-21 09:46:41,940 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:46:41,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:46:41,940 INFO L85 PathProgramCache]: Analyzing trace with hash 483076307, now seen corresponding path program 1 times [2022-07-21 09:46:41,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:46:41,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874900886] [2022-07-21 09:46:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:41,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:46:41,991 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:46:41,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442702723] [2022-07-21 09:46:41,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:41,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:41,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:46:41,993 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:46:42,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 09:46:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:42,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 2754 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 09:46:42,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:46:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-21 09:46:42,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:46:42,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:46:42,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874900886] [2022-07-21 09:46:42,559 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:46:42,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442702723] [2022-07-21 09:46:42,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442702723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:46:42,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:46:42,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:46:42,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639505460] [2022-07-21 09:46:42,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:46:42,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:46:42,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:46:42,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:46:42,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:46:42,563 INFO L87 Difference]: Start difference. First operand 246 states and 301 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-21 09:46:42,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:46:42,608 INFO L93 Difference]: Finished difference Result 400 states and 490 transitions. [2022-07-21 09:46:42,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:46:42,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) Word has length 173 [2022-07-21 09:46:42,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:46:42,610 INFO L225 Difference]: With dead ends: 400 [2022-07-21 09:46:42,610 INFO L226 Difference]: Without dead ends: 223 [2022-07-21 09:46:42,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:46:42,612 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 2 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:46:42,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 903 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:46:42,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-07-21 09:46:42,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2022-07-21 09:46:42,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 138 states have (on average 1.0507246376811594) internal successors, (145), 142 states have internal predecessors, (145), 58 states have call successors, (58), 25 states have call predecessors, (58), 26 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2022-07-21 09:46:42,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 265 transitions. [2022-07-21 09:46:42,630 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 265 transitions. Word has length 173 [2022-07-21 09:46:42,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:46:42,630 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 265 transitions. [2022-07-21 09:46:42,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-21 09:46:42,631 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 265 transitions. [2022-07-21 09:46:42,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-21 09:46:42,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:46:42,633 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-21 09:46:42,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 09:46:42,847 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,SelfDestructingSolverStorable15 [2022-07-21 09:46:42,848 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:46:42,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:46:42,848 INFO L85 PathProgramCache]: Analyzing trace with hash -708152249, now seen corresponding path program 1 times [2022-07-21 09:46:42,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:46:42,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5721786] [2022-07-21 09:46:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:42,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:46:42,896 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:46:42,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [154708416] [2022-07-21 09:46:42,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:42,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:42,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:46:42,898 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:46:42,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 09:46:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:43,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 172 conjunts are in the unsatisfiable core [2022-07-21 09:46:43,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:46:43,558 INFO L356 Elim1Store]: treesize reduction 117, result has 12.0 percent of original size [2022-07-21 09:46:43,559 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 8 case distinctions, treesize of input 55 treesize of output 54 [2022-07-21 09:46:43,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-21 09:46:44,222 INFO L356 Elim1Store]: treesize reduction 125, result has 20.4 percent of original size [2022-07-21 09:46:44,222 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 12 case distinctions, treesize of input 410 treesize of output 414 [2022-07-21 09:46:44,912 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 [2022-07-21 09:46:45,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:46:45,667 INFO L356 Elim1Store]: treesize reduction 673, result has 21.0 percent of original size [2022-07-21 09:46:45,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 276 treesize of output 413 [2022-07-21 09:47:41,027 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2835 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2835))) is different from true [2022-07-21 09:47:41,213 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2836 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_2836))) is different from true [2022-07-21 09:47:41,457 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:47:41,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 09:47:41,467 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-21 09:47:41,468 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2022-07-21 09:47:41,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:47:41,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:47:41,536 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:47:41,536 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 1 case distinctions, treesize of input 66 treesize of output 66 [2022-07-21 09:47:41,613 INFO L356 Elim1Store]: treesize reduction 13, result has 82.2 percent of original size [2022-07-21 09:47:41,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 68 treesize of output 115 [2022-07-21 09:48:12,741 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2022-07-21 09:48:12,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-07-21 09:48:12,746 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 16 treesize of output 12