./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_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_foreach_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 44162e1142387f3513ac3cf9af71d3c7aa6399e99cd364d08a07ceb8efc80a41 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:42:30,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:42:30,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:42:30,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:42:30,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:42:30,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:42:30,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:42:30,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:42:30,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:42:30,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:42:30,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:42:30,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:42:30,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:42:30,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:42:30,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:42:30,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:42:30,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:42:30,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:42:30,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:42:30,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:42:30,932 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:42:30,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:42:30,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:42:30,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:42:30,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:42:30,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:42:30,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:42:30,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:42:30,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:42:30,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:42:30,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:42:30,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:42:30,951 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:42:30,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:42:30,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:42:30,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:42:30,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:42:30,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:42:30,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:42:30,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:42:30,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:42:30,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:42:30,962 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:42:30,998 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:42:30,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:42:30,999 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:42:30,999 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:42:31,000 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:42:31,001 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:42:31,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:42:31,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:42:31,002 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:42:31,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:42:31,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:42:31,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:42:31,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:42:31,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:42:31,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:42:31,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:42:31,011 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:42:31,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:42:31,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:42:31,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:42:31,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:42:31,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:42:31,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:42:31,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:42:31,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:42:31,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:42:31,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:42:31,013 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:42:31,013 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:42:31,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:42:31,014 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44162e1142387f3513ac3cf9af71d3c7aa6399e99cd364d08a07ceb8efc80a41 [2022-07-21 09:42:31,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:42:31,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:42:31,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:42:31,363 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:42:31,365 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:42:31,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i [2022-07-21 09:42:31,435 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/915902d17/510b59b14ae8401797911110d507196c/FLAGb7d93c9fc [2022-07-21 09:42:32,265 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:42:32,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i [2022-07-21 09:42:32,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/915902d17/510b59b14ae8401797911110d507196c/FLAGb7d93c9fc [2022-07-21 09:42:32,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/915902d17/510b59b14ae8401797911110d507196c [2022-07-21 09:42:32,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:42:32,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:42:32,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:42:32,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:42:32,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:42:32,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:42:32" (1/1) ... [2022-07-21 09:42:32,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd9be5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:42:32, skipping insertion in model container [2022-07-21 09:42:32,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:42:32" (1/1) ... [2022-07-21 09:42:32,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:42:32,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:42:33,260 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_foreach_harness.i[4496,4509] [2022-07-21 09:42:33,268 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_foreach_harness.i[4556,4569] [2022-07-21 09:42:34,160 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:34,161 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:34,161 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:34,162 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:34,163 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:34,175 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:34,175 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:34,177 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:34,177 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:34,179 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:34,180 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:34,181 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:34,182 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:34,447 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:42:34,449 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:42:34,449 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:42:34,450 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:42:34,455 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:42:34,456 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:42:34,456 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:42:34,457 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:42:34,458 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:42:34,458 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:42:34,644 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:42:34,948 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:34,949 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:34,971 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:34,972 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:34,979 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:34,979 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:34,999 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,000 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,002 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,003 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,003 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,003 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,004 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:42:35,110 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:42:35,131 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_foreach_harness.i[4496,4509] [2022-07-21 09:42:35,131 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_foreach_harness.i[4556,4569] [2022-07-21 09:42:35,167 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,168 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,168 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,168 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,169 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,175 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,176 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,178 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,179 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,180 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,180 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,180 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,181 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,206 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:42:35,207 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:42:35,207 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:42:35,208 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:42:35,209 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:42:35,209 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:42:35,210 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:42:35,210 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:42:35,210 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:42:35,211 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:42:35,247 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:42:35,371 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,372 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,377 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,378 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,380 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,380 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,414 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,415 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,415 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,415 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,416 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,416 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,416 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:42:35,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:42:35,680 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:42:35,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:42:35 WrapperNode [2022-07-21 09:42:35,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:42:35,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:42:35,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:42:35,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:42:35,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:42:35" (1/1) ... [2022-07-21 09:42:35,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:42:35" (1/1) ... [2022-07-21 09:42:35,932 INFO L137 Inliner]: procedures = 775, calls = 2435, calls flagged for inlining = 69, calls inlined = 18, statements flattened = 938 [2022-07-21 09:42:35,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:42:35,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:42:35,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:42:35,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:42:35,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:42:35" (1/1) ... [2022-07-21 09:42:35,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:42:35" (1/1) ... [2022-07-21 09:42:35,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:42:35" (1/1) ... [2022-07-21 09:42:35,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:42:35" (1/1) ... [2022-07-21 09:42:35,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:42:35" (1/1) ... [2022-07-21 09:42:36,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:42:35" (1/1) ... [2022-07-21 09:42:36,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:42:35" (1/1) ... [2022-07-21 09:42:36,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:42:36,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:42:36,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:42:36,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:42:36,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:42:35" (1/1) ... [2022-07-21 09:42:36,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:42:36,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:42:36,098 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 09:42:36,143 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 09:42:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-21 09:42:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:42:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-21 09:42:36,165 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-21 09:42:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:42:36,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:42:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-07-21 09:42:36,165 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-07-21 09:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:42:36,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-21 09:42:36,167 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-21 09:42:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-21 09:42:36,167 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-21 09:42:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 09:42:36,167 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 09:42:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:42:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-21 09:42:36,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-21 09:42:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:42:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-21 09:42:36,168 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-21 09:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-07-21 09:42:36,169 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-07-21 09:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2022-07-21 09:42:36,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2022-07-21 09:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-07-21 09:42:36,170 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-07-21 09:42:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 09:42:36,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 09:42:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2022-07-21 09:42:36,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2022-07-21 09:42:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2022-07-21 09:42:36,171 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2022-07-21 09:42:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:42:36,171 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:42:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_int [2022-07-21 09:42:36,172 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_int [2022-07-21 09:42:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2022-07-21 09:42:36,172 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2022-07-21 09:42:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-07-21 09:42:36,172 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-07-21 09:42:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:42:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-21 09:42:36,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-21 09:42:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-21 09:42:36,173 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-21 09:42:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_entry [2022-07-21 09:42:36,173 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_entry [2022-07-21 09:42:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-21 09:42:36,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-21 09:42:36,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:42:36,545 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:42:36,547 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:42:36,888 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !true; [2022-07-21 09:42:36,889 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2022-07-21 09:42:37,619 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2022-07-21 09:42:37,637 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:42:37,644 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:42:37,644 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-07-21 09:42:37,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:42:37 BoogieIcfgContainer [2022-07-21 09:42:37,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:42:37,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:42:37,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:42:37,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:42:37,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:42:32" (1/3) ... [2022-07-21 09:42:37,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d06037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:42:37, skipping insertion in model container [2022-07-21 09:42:37,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:42:35" (2/3) ... [2022-07-21 09:42:37,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d06037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:42:37, skipping insertion in model container [2022-07-21 09:42:37,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:42:37" (3/3) ... [2022-07-21 09:42:37,653 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_foreach_harness.i [2022-07-21 09:42:37,665 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:42:37,665 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:42:37,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:42:37,728 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@10a89d70, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@735e10 [2022-07-21 09:42:37,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 09:42:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 288 states, 187 states have (on average 1.267379679144385) internal successors, (237), 184 states have internal predecessors, (237), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2022-07-21 09:42:37,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-21 09:42:37,771 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:42:37,771 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:42:37,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:42:37,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:42:37,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1669380125, now seen corresponding path program 1 times [2022-07-21 09:42:37,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:42:37,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400096456] [2022-07-21 09:42:37,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:42:37,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:42:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:38,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:42:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:38,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:42:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:38,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:42:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:38,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:42:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:38,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 09:42:38,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:42:38,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400096456] [2022-07-21 09:42:38,360 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-21 09:42:38,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442523044] [2022-07-21 09:42:38,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:42:38,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:42:38,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:42:38,367 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 09:42:38,400 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 09:42:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:38,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 09:42:38,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:42:38,969 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-21 09:42:38,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:42:38,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442523044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:42:38,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:42:38,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 09:42:38,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161667523] [2022-07-21 09:42:38,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:42:38,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 09:42:38,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:42:39,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 09:42:39,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:42:39,007 INFO L87 Difference]: Start difference. First operand has 288 states, 187 states have (on average 1.267379679144385) internal successors, (237), 184 states have internal predecessors, (237), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 09:42:39,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:42:39,096 INFO L93 Difference]: Finished difference Result 567 states and 831 transitions. [2022-07-21 09:42:39,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 09:42:39,099 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 120 [2022-07-21 09:42:39,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:42:39,109 INFO L225 Difference]: With dead ends: 567 [2022-07-21 09:42:39,109 INFO L226 Difference]: Without dead ends: 282 [2022-07-21 09:42:39,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 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 09:42:39,118 INFO L413 NwaCegarLoop]: 385 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, 385 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 09:42:39,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:42:39,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-07-21 09:42:39,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2022-07-21 09:42:39,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 178 states have (on average 1.2303370786516854) internal successors, (219), 179 states have internal predecessors, (219), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-07-21 09:42:39,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 380 transitions. [2022-07-21 09:42:39,177 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 380 transitions. Word has length 120 [2022-07-21 09:42:39,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:42:39,177 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 380 transitions. [2022-07-21 09:42:39,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 09:42:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 380 transitions. [2022-07-21 09:42:39,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-21 09:42:39,181 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:42:39,181 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:42:39,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 09:42:39,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-21 09:42:39,392 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:42:39,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:42:39,392 INFO L85 PathProgramCache]: Analyzing trace with hash -262655291, now seen corresponding path program 1 times [2022-07-21 09:42:39,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:42:39,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293466313] [2022-07-21 09:42:39,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:42:39,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:42:39,528 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:42:39,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905235195] [2022-07-21 09:42:39,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:42:39,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:42:39,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:42:39,531 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 09:42:39,532 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 09:42:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:40,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 2441 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:42:40,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:42:40,297 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-21 09:42:40,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:42:40,462 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-21 09:42:40,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:42:40,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293466313] [2022-07-21 09:42:40,463 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:42:40,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905235195] [2022-07-21 09:42:40,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905235195] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 09:42:40,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:42:40,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2022-07-21 09:42:40,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377824606] [2022-07-21 09:42:40,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:42:40,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:42:40,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:42:40,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:42:40,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:42:40,466 INFO L87 Difference]: Start difference. First operand 282 states and 380 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-21 09:42:40,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:42:40,855 INFO L93 Difference]: Finished difference Result 512 states and 707 transitions. [2022-07-21 09:42:40,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:42:40,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 126 [2022-07-21 09:42:40,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:42:40,860 INFO L225 Difference]: With dead ends: 512 [2022-07-21 09:42:40,860 INFO L226 Difference]: Without dead ends: 299 [2022-07-21 09:42:40,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-07-21 09:42:40,862 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 407 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:42:40,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1992 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:42:40,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-07-21 09:42:40,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-07-21 09:42:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 188 states have (on average 1.2287234042553192) internal successors, (231), 190 states have internal predecessors, (231), 86 states have call successors, (86), 23 states have call predecessors, (86), 24 states have return successors, (92), 85 states have call predecessors, (92), 85 states have call successors, (92) [2022-07-21 09:42:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 409 transitions. [2022-07-21 09:42:40,887 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 409 transitions. Word has length 126 [2022-07-21 09:42:40,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:42:40,888 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 409 transitions. [2022-07-21 09:42:40,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-21 09:42:40,889 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 409 transitions. [2022-07-21 09:42:40,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-21 09:42:40,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:42:40,891 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:42:40,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:42:41,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-21 09:42:41,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:42:41,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:42:41,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1695610635, now seen corresponding path program 1 times [2022-07-21 09:42:41,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:42:41,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571330017] [2022-07-21 09:42:41,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:42:41,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:42:41,187 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:42:41,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083469842] [2022-07-21 09:42:41,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:42:41,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:42:41,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:42:41,189 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 09:42:41,191 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 09:42:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:41,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:42:41,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:42:41,734 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-21 09:42:41,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:42:41,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:42:41,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571330017] [2022-07-21 09:42:41,735 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:42:41,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083469842] [2022-07-21 09:42:41,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083469842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:42:41,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:42:41,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:42:41,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985601020] [2022-07-21 09:42:41,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:42:41,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:42:41,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:42:41,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:42:41,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:42:41,738 INFO L87 Difference]: Start difference. First operand 299 states and 409 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 09:42:41,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:42:41,773 INFO L93 Difference]: Finished difference Result 558 states and 771 transitions. [2022-07-21 09:42:41,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:42:41,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 127 [2022-07-21 09:42:41,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:42:41,776 INFO L225 Difference]: With dead ends: 558 [2022-07-21 09:42:41,777 INFO L226 Difference]: Without dead ends: 304 [2022-07-21 09:42:41,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 09:42:41,779 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 2 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1503 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 09:42:41,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1503 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:42:41,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-07-21 09:42:41,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2022-07-21 09:42:41,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 192 states have (on average 1.2239583333333333) internal successors, (235), 194 states have internal predecessors, (235), 86 states have call successors, (86), 23 states have call predecessors, (86), 25 states have return successors, (93), 86 states have call predecessors, (93), 85 states have call successors, (93) [2022-07-21 09:42:41,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 414 transitions. [2022-07-21 09:42:41,799 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 414 transitions. Word has length 127 [2022-07-21 09:42:41,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:42:41,800 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 414 transitions. [2022-07-21 09:42:41,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 09:42:41,800 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 414 transitions. [2022-07-21 09:42:41,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 09:42:41,802 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:42:41,802 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:42:41,830 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 09:42:42,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:42:42,028 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:42:42,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:42:42,028 INFO L85 PathProgramCache]: Analyzing trace with hash 818445258, now seen corresponding path program 1 times [2022-07-21 09:42:42,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:42:42,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982742381] [2022-07-21 09:42:42,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:42:42,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:42:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:42:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:42:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:42:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:42:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 09:42:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:42:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:42:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:42:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:42:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:42:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:42:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:42:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:42:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:42:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 09:42:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 09:42:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 09:42:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 09:42:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 09:42:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 09:42:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-21 09:42:42,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:42:42,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982742381] [2022-07-21 09:42:42,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982742381] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:42:42,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936175406] [2022-07-21 09:42:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:42:42,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:42:42,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:42:42,607 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 09:42:42,635 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 09:42:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:43,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 2450 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-21 09:42:43,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:42:43,296 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 09:42:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-21 09:42:43,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:42:43,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936175406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:42:43,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:42:43,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2022-07-21 09:42:43,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427864098] [2022-07-21 09:42:43,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:42:43,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 09:42:43,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:42:43,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 09:42:43,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2022-07-21 09:42:43,547 INFO L87 Difference]: Start difference. First operand 304 states and 414 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-21 09:42:43,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:42:43,623 INFO L93 Difference]: Finished difference Result 556 states and 768 transitions. [2022-07-21 09:42:43,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 09:42:43,623 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 133 [2022-07-21 09:42:43,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:42:43,626 INFO L225 Difference]: With dead ends: 556 [2022-07-21 09:42:43,626 INFO L226 Difference]: Without dead ends: 313 [2022-07-21 09:42:43,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-07-21 09:42:43,628 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 11 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:42:43,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2845 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 122 Unchecked, 0.0s Time] [2022-07-21 09:42:43,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-07-21 09:42:43,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-07-21 09:42:43,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 200 states have (on average 1.225) internal successors, (245), 202 states have internal predecessors, (245), 86 states have call successors, (86), 24 states have call predecessors, (86), 26 states have return successors, (94), 86 states have call predecessors, (94), 85 states have call successors, (94) [2022-07-21 09:42:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 425 transitions. [2022-07-21 09:42:43,644 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 425 transitions. Word has length 133 [2022-07-21 09:42:43,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:42:43,645 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 425 transitions. [2022-07-21 09:42:43,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-21 09:42:43,645 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 425 transitions. [2022-07-21 09:42:43,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 09:42:43,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:42:43,647 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:42:43,676 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 09:42:43,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:42:43,862 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:42:43,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:42:43,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1772385416, now seen corresponding path program 1 times [2022-07-21 09:42:43,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:42:43,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796300072] [2022-07-21 09:42:43,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:42:43,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:42:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:42:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:42:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:42:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:42:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 09:42:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:42:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:42:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:42:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:42:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:42:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:42:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:42:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:42:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:42:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 09:42:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 09:42:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 09:42:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 09:42:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 09:42:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 09:42:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,345 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-21 09:42:44,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:42:44,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796300072] [2022-07-21 09:42:44,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796300072] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:42:44,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843973837] [2022-07-21 09:42:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:42:44,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:42:44,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:42:44,348 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 09:42:44,355 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 09:42:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:44,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 2445 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 09:42:44,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:42:44,990 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-21 09:42:44,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:42:44,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843973837] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:42:44,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:42:44,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-07-21 09:42:44,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914552938] [2022-07-21 09:42:44,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:42:44,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:42:44,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:42:44,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:42:44,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:42:44,993 INFO L87 Difference]: Start difference. First operand 313 states and 425 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 09:42:45,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:42:45,248 INFO L93 Difference]: Finished difference Result 560 states and 778 transitions. [2022-07-21 09:42:45,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:42:45,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 133 [2022-07-21 09:42:45,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:42:45,252 INFO L225 Difference]: With dead ends: 560 [2022-07-21 09:42:45,252 INFO L226 Difference]: Without dead ends: 315 [2022-07-21 09:42:45,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:42:45,254 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 413 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:42:45,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 923 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:42:45,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-21 09:42:45,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2022-07-21 09:42:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 201 states have (on average 1.2189054726368158) internal successors, (245), 203 states have internal predecessors, (245), 87 states have call successors, (87), 24 states have call predecessors, (87), 26 states have return successors, (98), 87 states have call predecessors, (98), 86 states have call successors, (98) [2022-07-21 09:42:45,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 430 transitions. [2022-07-21 09:42:45,274 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 430 transitions. Word has length 133 [2022-07-21 09:42:45,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:42:45,275 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 430 transitions. [2022-07-21 09:42:45,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 09:42:45,275 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 430 transitions. [2022-07-21 09:42:45,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 09:42:45,277 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:42:45,277 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:42:45,308 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 09:42:45,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:42:45,492 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:42:45,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:42:45,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1889144309, now seen corresponding path program 1 times [2022-07-21 09:42:45,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:42:45,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68190746] [2022-07-21 09:42:45,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:42:45,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:42:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:42:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:42:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:42:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:42:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 09:42:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:42:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:42:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:42:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:42:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:42:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:42:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:42:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:42:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:42:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 09:42:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 09:42:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 09:42:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 09:42:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 09:42:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 09:42:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 09:42:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:45,922 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-21 09:42:45,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:42:45,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68190746] [2022-07-21 09:42:45,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68190746] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:42:45,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395265855] [2022-07-21 09:42:45,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:42:45,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:42:45,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:42:45,928 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 09:42:45,930 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 09:42:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:46,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-21 09:42:46,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:42:47,357 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 09:42:53,379 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-21 09:42:53,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:42:53,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395265855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:42:53,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:42:53,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-21 09:42:53,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920266964] [2022-07-21 09:42:53,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:42:53,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:42:53,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:42:53,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:42:53,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=202, Unknown=3, NotChecked=28, Total=272 [2022-07-21 09:42:53,382 INFO L87 Difference]: Start difference. First operand 315 states and 430 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-21 09:42:53,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:42:53,657 INFO L93 Difference]: Finished difference Result 567 states and 804 transitions. [2022-07-21 09:42:53,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:42:53,658 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 139 [2022-07-21 09:42:53,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:42:53,660 INFO L225 Difference]: With dead ends: 567 [2022-07-21 09:42:53,661 INFO L226 Difference]: Without dead ends: 318 [2022-07-21 09:42:53,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=54, Invalid=253, Unknown=3, NotChecked=32, Total=342 [2022-07-21 09:42:53,663 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 5 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 513 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:42:53,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2086 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 513 Unchecked, 0.2s Time] [2022-07-21 09:42:53,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-07-21 09:42:53,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2022-07-21 09:42:53,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 203 states have (on average 1.2167487684729064) internal successors, (247), 204 states have internal predecessors, (247), 87 states have call successors, (87), 25 states have call predecessors, (87), 26 states have return successors, (98), 87 states have call predecessors, (98), 86 states have call successors, (98) [2022-07-21 09:42:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 432 transitions. [2022-07-21 09:42:53,680 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 432 transitions. Word has length 139 [2022-07-21 09:42:53,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:42:53,680 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 432 transitions. [2022-07-21 09:42:53,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-21 09:42:53,681 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 432 transitions. [2022-07-21 09:42:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 09:42:53,682 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:42:53,683 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:42:53,707 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 09:42:53,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:42:53,896 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:42:53,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:42:53,896 INFO L85 PathProgramCache]: Analyzing trace with hash -817837060, now seen corresponding path program 1 times [2022-07-21 09:42:53,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:42:53,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595318061] [2022-07-21 09:42:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:42:53,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:42:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:42:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:42:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:42:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:42:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 09:42:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:42:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:42:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:42:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:42:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:42:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:42:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:42:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:42:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:42:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 09:42:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 09:42:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:42:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 09:42:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 09:42:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 09:42:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 09:42:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-21 09:42:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-21 09:42:54,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:42:54,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595318061] [2022-07-21 09:42:54,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595318061] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:42:54,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:42:54,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 09:42:54,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564770396] [2022-07-21 09:42:54,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:42:54,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 09:42:54,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:42:54,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 09:42:54,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-07-21 09:42:54,633 INFO L87 Difference]: Start difference. First operand 317 states and 432 transitions. Second operand has 18 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-07-21 09:42:57,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:42:57,675 INFO L93 Difference]: Finished difference Result 573 states and 800 transitions. [2022-07-21 09:42:57,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 09:42:57,684 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 144 [2022-07-21 09:42:57,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:42:57,686 INFO L225 Difference]: With dead ends: 573 [2022-07-21 09:42:57,687 INFO L226 Difference]: Without dead ends: 345 [2022-07-21 09:42:57,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2022-07-21 09:42:57,689 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 602 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 3416 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 3941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 3416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:42:57,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 1800 Invalid, 3941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 3416 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-21 09:42:57,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-07-21 09:42:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 326. [2022-07-21 09:42:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 209 states have (on average 1.2200956937799043) internal successors, (255), 211 states have internal predecessors, (255), 89 states have call successors, (89), 25 states have call predecessors, (89), 27 states have return successors, (109), 89 states have call predecessors, (109), 88 states have call successors, (109) [2022-07-21 09:42:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 453 transitions. [2022-07-21 09:42:57,752 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 453 transitions. Word has length 144 [2022-07-21 09:42:57,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:42:57,754 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 453 transitions. [2022-07-21 09:42:57,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-07-21 09:42:57,755 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 453 transitions. [2022-07-21 09:42:57,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 09:42:57,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:42:57,757 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:42:57,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 09:42:57,757 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:42:57,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:42:57,759 INFO L85 PathProgramCache]: Analyzing trace with hash -951850566, now seen corresponding path program 1 times [2022-07-21 09:42:57,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:42:57,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120190705] [2022-07-21 09:42:57,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:42:57,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:42:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:42:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:42:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:42:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:42:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 09:42:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:42:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:42:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:42:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:42:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:42:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:42:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:42:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:42:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:42:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 09:42:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 09:42:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:42:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 09:42:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 09:42:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 09:42:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 09:42:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-21 09:42:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-21 09:42:58,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:42:58,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120190705] [2022-07-21 09:42:58,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120190705] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:42:58,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538333239] [2022-07-21 09:42:58,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:42:58,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:42:58,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:42:58,668 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 09:42:58,669 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 09:42:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:42:59,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 2499 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-21 09:42:59,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:42:59,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:42:59,434 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 16 treesize of output 17 [2022-07-21 09:42:59,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-21 09:42:59,724 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-21 09:42:59,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:42:59,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538333239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:42:59,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:42:59,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 29 [2022-07-21 09:42:59,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112947020] [2022-07-21 09:42:59,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:42:59,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 09:42:59,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:42:59,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 09:42:59,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2022-07-21 09:42:59,726 INFO L87 Difference]: Start difference. First operand 326 states and 453 transitions. Second operand has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 12 states have internal predecessors, (76), 8 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2022-07-21 09:43:00,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:43:00,288 INFO L93 Difference]: Finished difference Result 635 states and 879 transitions. [2022-07-21 09:43:00,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:43:00,288 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 12 states have internal predecessors, (76), 8 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 144 [2022-07-21 09:43:00,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:43:00,291 INFO L225 Difference]: With dead ends: 635 [2022-07-21 09:43:00,291 INFO L226 Difference]: Without dead ends: 376 [2022-07-21 09:43:00,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=152, Invalid=1330, Unknown=0, NotChecked=0, Total=1482 [2022-07-21 09:43:00,294 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 478 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:43:00,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 2881 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 393 Invalid, 0 Unknown, 96 Unchecked, 0.3s Time] [2022-07-21 09:43:00,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-07-21 09:43:00,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 372. [2022-07-21 09:43:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 246 states have (on average 1.2276422764227641) internal successors, (302), 247 states have internal predecessors, (302), 91 states have call successors, (91), 33 states have call predecessors, (91), 34 states have return successors, (101), 91 states have call predecessors, (101), 90 states have call successors, (101) [2022-07-21 09:43:00,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 494 transitions. [2022-07-21 09:43:00,321 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 494 transitions. Word has length 144 [2022-07-21 09:43:00,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:43:00,322 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 494 transitions. [2022-07-21 09:43:00,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 12 states have internal predecessors, (76), 8 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2022-07-21 09:43:00,322 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 494 transitions. [2022-07-21 09:43:00,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-21 09:43:00,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:43:00,324 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:43:00,358 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 09:43:00,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:43:00,551 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:43:00,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:43:00,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2132172247, now seen corresponding path program 1 times [2022-07-21 09:43:00,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:43:00,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241979872] [2022-07-21 09:43:00,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:00,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:43:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:43:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:43:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:43:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:43:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 09:43:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:43:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:43:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:43:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:43:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:43:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:43:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:43:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:43:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:43:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 09:43:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 09:43:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:43:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 09:43:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 09:43:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:43:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:43:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:43:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-21 09:43:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,435 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-21 09:43:01,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:43:01,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241979872] [2022-07-21 09:43:01,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241979872] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:43:01,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522783019] [2022-07-21 09:43:01,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:01,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:43:01,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:43:01,440 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 09:43:01,441 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 09:43:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:02,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 09:43:02,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:43:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-21 09:43:02,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:43:02,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522783019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:43:02,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:43:02,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 23 [2022-07-21 09:43:02,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506436851] [2022-07-21 09:43:02,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:43:02,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:43:02,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:43:02,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:43:02,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2022-07-21 09:43:02,138 INFO L87 Difference]: Start difference. First operand 372 states and 494 transitions. Second operand has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 09:43:02,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:43:02,331 INFO L93 Difference]: Finished difference Result 685 states and 921 transitions. [2022-07-21 09:43:02,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:43:02,332 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 148 [2022-07-21 09:43:02,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:43:02,334 INFO L225 Difference]: With dead ends: 685 [2022-07-21 09:43:02,334 INFO L226 Difference]: Without dead ends: 384 [2022-07-21 09:43:02,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2022-07-21 09:43:02,337 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 2 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:43:02,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2084 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:43:02,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-07-21 09:43:02,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 375. [2022-07-21 09:43:02,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 248 states have (on average 1.2258064516129032) internal successors, (304), 250 states have internal predecessors, (304), 91 states have call successors, (91), 33 states have call predecessors, (91), 35 states have return successors, (104), 91 states have call predecessors, (104), 90 states have call successors, (104) [2022-07-21 09:43:02,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 499 transitions. [2022-07-21 09:43:02,363 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 499 transitions. Word has length 148 [2022-07-21 09:43:02,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:43:02,363 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 499 transitions. [2022-07-21 09:43:02,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 09:43:02,364 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 499 transitions. [2022-07-21 09:43:02,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-21 09:43:02,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:43:02,365 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:43:02,398 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 09:43:02,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-21 09:43:02,579 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:43:02,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:43:02,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1795320927, now seen corresponding path program 2 times [2022-07-21 09:43:02,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:43:02,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914474109] [2022-07-21 09:43:02,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:02,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:43:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:02,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:43:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:02,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:43:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:02,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:43:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:02,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:43:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:02,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 09:43:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:02,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:43:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:02,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:43:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:02,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:43:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:02,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:43:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:02,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:43:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:02,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:43:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:02,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:43:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:03,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:43:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:03,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:43:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:03,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 09:43:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:03,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 09:43:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:43:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:03,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:43:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:03,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 09:43:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:03,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 09:43:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:03,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 09:43:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:03,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:43:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:03,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:43:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:03,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:43:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:03,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-21 09:43:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:03,492 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-21 09:43:03,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:43:03,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914474109] [2022-07-21 09:43:03,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914474109] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:43:03,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196794] [2022-07-21 09:43:03,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:43:03,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:43:03,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:43:03,495 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 09:43:03,496 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 09:43:04,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:43:04,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:43:04,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 2569 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 09:43:04,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:43:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-21 09:43:04,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:43:04,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:43:04,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:43:04,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 23 [2022-07-21 09:43:04,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835482016] [2022-07-21 09:43:04,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:43:04,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:43:04,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:43:04,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:43:04,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2022-07-21 09:43:04,454 INFO L87 Difference]: Start difference. First operand 375 states and 499 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 09:43:04,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:43:04,649 INFO L93 Difference]: Finished difference Result 670 states and 907 transitions. [2022-07-21 09:43:04,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:43:04,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 159 [2022-07-21 09:43:04,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:43:04,652 INFO L225 Difference]: With dead ends: 670 [2022-07-21 09:43:04,652 INFO L226 Difference]: Without dead ends: 384 [2022-07-21 09:43:04,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2022-07-21 09:43:04,654 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 2 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:43:04,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2086 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:43:04,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-07-21 09:43:04,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 378. [2022-07-21 09:43:04,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 250 states have (on average 1.224) internal successors, (306), 253 states have internal predecessors, (306), 91 states have call successors, (91), 33 states have call predecessors, (91), 36 states have return successors, (104), 91 states have call predecessors, (104), 90 states have call successors, (104) [2022-07-21 09:43:04,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 501 transitions. [2022-07-21 09:43:04,675 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 501 transitions. Word has length 159 [2022-07-21 09:43:04,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:43:04,676 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 501 transitions. [2022-07-21 09:43:04,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 09:43:04,676 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 501 transitions. [2022-07-21 09:43:04,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-21 09:43:04,678 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:43:04,678 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:43:04,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-21 09:43:04,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 09:43:04,891 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:43:04,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:43:04,892 INFO L85 PathProgramCache]: Analyzing trace with hash -146496733, now seen corresponding path program 1 times [2022-07-21 09:43:04,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:43:04,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887935000] [2022-07-21 09:43:04,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:04,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:43:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:43:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:43:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:43:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:43:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 09:43:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:43:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:43:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:43:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:43:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:43:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:43:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:43:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:43:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:43:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 09:43:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 09:43:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:43:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:43:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 09:43:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 09:43:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 09:43:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:43:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:43:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:43:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:43:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 09:43:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-21 09:43:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-21 09:43:05,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:43:05,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887935000] [2022-07-21 09:43:05,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887935000] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:43:05,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630990079] [2022-07-21 09:43:05,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:05,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:43:05,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:43:05,764 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 09:43:05,790 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 09:43:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:06,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 09:43:06,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:43:06,425 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-21 09:43:06,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:43:06,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630990079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:43:06,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:43:06,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [18] total 22 [2022-07-21 09:43:06,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844482370] [2022-07-21 09:43:06,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:43:06,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:43:06,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:43:06,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:43:06,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2022-07-21 09:43:06,428 INFO L87 Difference]: Start difference. First operand 378 states and 501 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 09:43:06,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:43:06,601 INFO L93 Difference]: Finished difference Result 706 states and 944 transitions. [2022-07-21 09:43:06,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:43:06,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 170 [2022-07-21 09:43:06,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:43:06,604 INFO L225 Difference]: With dead ends: 706 [2022-07-21 09:43:06,604 INFO L226 Difference]: Without dead ends: 378 [2022-07-21 09:43:06,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-07-21 09:43:06,606 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 2 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:43:06,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1724 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:43:06,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-07-21 09:43:06,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 373. [2022-07-21 09:43:06,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 246 states have (on average 1.2195121951219512) internal successors, (300), 249 states have internal predecessors, (300), 91 states have call successors, (91), 33 states have call predecessors, (91), 35 states have return successors, (103), 90 states have call predecessors, (103), 90 states have call successors, (103) [2022-07-21 09:43:06,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 494 transitions. [2022-07-21 09:43:06,627 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 494 transitions. Word has length 170 [2022-07-21 09:43:06,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:43:06,627 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 494 transitions. [2022-07-21 09:43:06,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 09:43:06,628 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 494 transitions. [2022-07-21 09:43:06,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-21 09:43:06,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:43:06,629 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:43:06,660 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 09:43:06,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 09:43:06,855 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:43:06,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:43:06,856 INFO L85 PathProgramCache]: Analyzing trace with hash 2001250165, now seen corresponding path program 1 times [2022-07-21 09:43:06,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:43:06,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924712920] [2022-07-21 09:43:06,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:06,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:43:06,925 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:43:06,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946400787] [2022-07-21 09:43:06,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:06,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:43:06,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:43:06,927 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 09:43:06,929 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 09:43:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:07,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 2728 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-21 09:43:07,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:43:07,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:07,722 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 16 treesize of output 17 [2022-07-21 09:43:09,423 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3155 Int) (v_ArrVal_3154 Int) (v_ArrVal_3151 Int) (v_ArrVal_3152 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_s_get_next_element_#in~iter.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_s_get_next_element_#in~iter.base|) (+ 8 |c_s_get_next_element_#in~iter.offset|) v_ArrVal_3154) (+ 16 |c_s_get_next_element_#in~iter.offset|) v_ArrVal_3151) (+ |c_s_get_next_element_#in~iter.offset| 24) v_ArrVal_3152) (+ 40 |c_s_get_next_element_#in~iter.offset|) v_ArrVal_3155)) |c_#memory_$Pointer$.base|)) is different from true [2022-07-21 09:43:09,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:09,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:09,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:09,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:09,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:09,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:09,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:09,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:09,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:09,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:09,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-07-21 09:43:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-21 09:43:09,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:43:09,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:43:09,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924712920] [2022-07-21 09:43:09,547 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:43:09,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946400787] [2022-07-21 09:43:09,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946400787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:43:09,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:43:09,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 09:43:09,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64327367] [2022-07-21 09:43:09,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:43:09,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 09:43:09,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:43:09,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 09:43:09,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=150, Unknown=1, NotChecked=24, Total=210 [2022-07-21 09:43:09,549 INFO L87 Difference]: Start difference. First operand 373 states and 494 transitions. Second operand has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-21 09:43:23,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:43:23,972 INFO L93 Difference]: Finished difference Result 675 states and 897 transitions. [2022-07-21 09:43:23,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 09:43:23,972 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 176 [2022-07-21 09:43:23,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:43:23,975 INFO L225 Difference]: With dead ends: 675 [2022-07-21 09:43:23,975 INFO L226 Difference]: Without dead ends: 429 [2022-07-21 09:43:23,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=101, Invalid=493, Unknown=10, NotChecked=46, Total=650 [2022-07-21 09:43:23,977 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 274 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 2494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1089 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:43:23,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1614 Invalid, 2494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1234 Invalid, 0 Unknown, 1089 Unchecked, 1.0s Time] [2022-07-21 09:43:23,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-07-21 09:43:23,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 401. [2022-07-21 09:43:23,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 265 states have (on average 1.211320754716981) internal successors, (321), 269 states have internal predecessors, (321), 94 states have call successors, (94), 38 states have call predecessors, (94), 41 states have return successors, (107), 93 states have call predecessors, (107), 93 states have call successors, (107) [2022-07-21 09:43:23,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 522 transitions. [2022-07-21 09:43:23,998 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 522 transitions. Word has length 176 [2022-07-21 09:43:23,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:43:23,999 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 522 transitions. [2022-07-21 09:43:23,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-21 09:43:23,999 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 522 transitions. [2022-07-21 09:43:24,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-21 09:43:24,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:43:24,001 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:43:24,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-21 09:43:24,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-21 09:43:24,211 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:43:24,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:43:24,212 INFO L85 PathProgramCache]: Analyzing trace with hash -897728049, now seen corresponding path program 1 times [2022-07-21 09:43:24,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:43:24,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048309850] [2022-07-21 09:43:24,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:24,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:43:24,299 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:43:24,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823892622] [2022-07-21 09:43:24,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:24,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:43:24,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:43:24,302 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:43:24,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 09:43:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:25,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 2744 conjuncts, 91 conjunts are in the unsatisfiable core [2022-07-21 09:43:25,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:43:25,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,173 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 16 treesize of output 17 [2022-07-21 09:43:25,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,185 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 16 treesize of output 17 [2022-07-21 09:43:25,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:43:25,927 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-21 09:43:25,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2022-07-21 09:43:25,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:25,964 INFO L356 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-07-21 09:43:25,964 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 78 [2022-07-21 09:43:26,685 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 109 proven. 3 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-21 09:43:26,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:43:29,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:43:29,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048309850] [2022-07-21 09:43:29,531 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:43:29,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823892622] [2022-07-21 09:43:29,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823892622] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:43:29,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:43:29,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-07-21 09:43:29,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804024378] [2022-07-21 09:43:29,532 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:43:29,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-21 09:43:29,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:43:29,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-21 09:43:29,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-07-21 09:43:29,534 INFO L87 Difference]: Start difference. First operand 401 states and 522 transitions. Second operand has 24 states, 21 states have (on average 4.428571428571429) internal successors, (93), 23 states have internal predecessors, (93), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-07-21 09:43:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:43:30,529 INFO L93 Difference]: Finished difference Result 668 states and 891 transitions. [2022-07-21 09:43:30,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 09:43:30,530 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 4.428571428571429) internal successors, (93), 23 states have internal predecessors, (93), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 181 [2022-07-21 09:43:30,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:43:30,533 INFO L225 Difference]: With dead ends: 668 [2022-07-21 09:43:30,533 INFO L226 Difference]: Without dead ends: 423 [2022-07-21 09:43:30,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 167 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2022-07-21 09:43:30,535 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 495 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 345 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 09:43:30,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 3060 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 429 Invalid, 0 Unknown, 345 Unchecked, 0.8s Time] [2022-07-21 09:43:30,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-07-21 09:43:30,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 416. [2022-07-21 09:43:30,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 276 states have (on average 1.2065217391304348) internal successors, (333), 280 states have internal predecessors, (333), 95 states have call successors, (95), 40 states have call predecessors, (95), 44 states have return successors, (109), 95 states have call predecessors, (109), 94 states have call successors, (109) [2022-07-21 09:43:30,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 537 transitions. [2022-07-21 09:43:30,559 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 537 transitions. Word has length 181 [2022-07-21 09:43:30,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:43:30,560 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 537 transitions. [2022-07-21 09:43:30,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 4.428571428571429) internal successors, (93), 23 states have internal predecessors, (93), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-07-21 09:43:30,560 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 537 transitions. [2022-07-21 09:43:30,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-21 09:43:30,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:43:30,562 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:43:30,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 09:43:30,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 09:43:30,778 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:43:30,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:43:30,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1484534063, now seen corresponding path program 1 times [2022-07-21 09:43:30,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:43:30,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611700188] [2022-07-21 09:43:30,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:30,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:43:30,844 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:43:30,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232799362] [2022-07-21 09:43:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:30,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:43:30,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:43:30,858 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:43:30,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 09:43:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:31,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 2739 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-21 09:43:31,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:43:32,425 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$.offset| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0))) (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0)))) is different from true [2022-07-21 09:43:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-21 09:43:37,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:43:37,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:43:37,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611700188] [2022-07-21 09:43:37,772 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:43:37,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232799362] [2022-07-21 09:43:37,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232799362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:43:37,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:43:37,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:43:37,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009317088] [2022-07-21 09:43:37,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:43:37,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:43:37,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:43:37,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:43:37,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2022-07-21 09:43:37,774 INFO L87 Difference]: Start difference. First operand 416 states and 537 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-21 09:43:37,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:43:37,930 INFO L93 Difference]: Finished difference Result 676 states and 908 transitions. [2022-07-21 09:43:37,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:43:37,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 181 [2022-07-21 09:43:37,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:43:37,933 INFO L225 Difference]: With dead ends: 676 [2022-07-21 09:43:37,933 INFO L226 Difference]: Without dead ends: 417 [2022-07-21 09:43:37,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2022-07-21 09:43:37,935 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 0 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 499 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:43:37,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1741 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 499 Unchecked, 0.1s Time] [2022-07-21 09:43:37,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-07-21 09:43:37,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 413. [2022-07-21 09:43:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 274 states have (on average 1.2007299270072993) internal successors, (329), 277 states have internal predecessors, (329), 95 states have call successors, (95), 40 states have call predecessors, (95), 43 states have return successors, (108), 95 states have call predecessors, (108), 94 states have call successors, (108) [2022-07-21 09:43:37,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 532 transitions. [2022-07-21 09:43:37,958 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 532 transitions. Word has length 181 [2022-07-21 09:43:37,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:43:37,958 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 532 transitions. [2022-07-21 09:43:37,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-21 09:43:37,960 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 532 transitions. [2022-07-21 09:43:37,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-21 09:43:37,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:43:37,962 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:43:37,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 09:43:38,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-21 09:43:38,175 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:43:38,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:43:38,176 INFO L85 PathProgramCache]: Analyzing trace with hash -510431116, now seen corresponding path program 1 times [2022-07-21 09:43:38,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:43:38,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690886401] [2022-07-21 09:43:38,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:38,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:43:38,234 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:43:38,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087738949] [2022-07-21 09:43:38,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:38,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:43:38,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:43:38,236 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:43:38,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 09:43:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:38,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 93 conjunts are in the unsatisfiable core [2022-07-21 09:43:38,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:43:39,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,057 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 16 treesize of output 17 [2022-07-21 09:43:39,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,067 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 16 treesize of output 17 [2022-07-21 09:43:39,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,758 INFO L356 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-07-21 09:43:39,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 78 [2022-07-21 09:43:39,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:39,776 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-21 09:43:39,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2022-07-21 09:43:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 109 proven. 3 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-21 09:43:40,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:43:41,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:43:41,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690886401] [2022-07-21 09:43:41,403 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:43:41,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087738949] [2022-07-21 09:43:41,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087738949] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:43:41,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:43:41,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2022-07-21 09:43:41,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689630383] [2022-07-21 09:43:41,404 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:43:41,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-21 09:43:41,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:43:41,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-21 09:43:41,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2022-07-21 09:43:41,405 INFO L87 Difference]: Start difference. First operand 413 states and 532 transitions. Second operand has 25 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 23 states have internal predecessors, (94), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-07-21 09:43:42,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:43:42,212 INFO L93 Difference]: Finished difference Result 663 states and 879 transitions. [2022-07-21 09:43:42,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-21 09:43:42,212 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 23 states have internal predecessors, (94), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 182 [2022-07-21 09:43:42,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:43:42,214 INFO L225 Difference]: With dead ends: 663 [2022-07-21 09:43:42,214 INFO L226 Difference]: Without dead ends: 426 [2022-07-21 09:43:42,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 168 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=176, Invalid=1464, Unknown=0, NotChecked=0, Total=1640 [2022-07-21 09:43:42,216 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 519 mSDsluCounter, 3676 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 4062 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 733 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:43:42,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 4062 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 277 Invalid, 0 Unknown, 733 Unchecked, 0.6s Time] [2022-07-21 09:43:42,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-07-21 09:43:42,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 414. [2022-07-21 09:43:42,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 275 states have (on average 1.2) internal successors, (330), 278 states have internal predecessors, (330), 95 states have call successors, (95), 40 states have call predecessors, (95), 43 states have return successors, (108), 95 states have call predecessors, (108), 94 states have call successors, (108) [2022-07-21 09:43:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 533 transitions. [2022-07-21 09:43:42,239 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 533 transitions. Word has length 182 [2022-07-21 09:43:42,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:43:42,240 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 533 transitions. [2022-07-21 09:43:42,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 23 states have internal predecessors, (94), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-07-21 09:43:42,241 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 533 transitions. [2022-07-21 09:43:42,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-21 09:43:42,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:43:42,243 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:43:42,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-21 09:43:42,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:43:42,472 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:43:42,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:43:42,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1048548953, now seen corresponding path program 1 times [2022-07-21 09:43:42,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:43:42,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552664036] [2022-07-21 09:43:42,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:42,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:43:42,532 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:43:42,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995901090] [2022-07-21 09:43:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:42,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:43:42,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:43:42,534 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:43:42,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 09:43:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:44,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 2798 conjuncts, 344 conjunts are in the unsatisfiable core [2022-07-21 09:43:44,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:43:44,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5