./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_iter_begin_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 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:18:06,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:18:06,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:18:06,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:18:06,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:18:06,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:18:06,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:18:06,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:18:06,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:18:06,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:18:06,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:18:06,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:18:06,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:18:06,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:18:06,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:18:06,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:18:06,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:18:06,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:18:06,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:18:06,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:18:06,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:18:06,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:18:06,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:18:06,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:18:06,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:18:06,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:18:06,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:18:06,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:18:06,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:18:06,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:18:06,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:18:06,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:18:06,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:18:06,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:18:06,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:18:06,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:18:06,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:18:06,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:18:06,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:18:06,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:18:06,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:18:06,840 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:18:06,859 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:18:06,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:18:06,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:18:06,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:18:06,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:18:06,862 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:18:06,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:18:06,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:18:06,863 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:18:06,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:18:06,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:18:06,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:18:06,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:18:06,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:18:06,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:18:06,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:18:06,865 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:18:06,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:18:06,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:18:06,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:18:06,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:18:06,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:18:06,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:18:06,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:18:06,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:18:06,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:18:06,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:18:06,866 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:18:06,866 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:18:06,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:18:06,867 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab [2021-12-28 03:18:07,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:18:07,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:18:07,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:18:07,111 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:18:07,112 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:18:07,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2021-12-28 03:18:07,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd062c8ad/835c20e8bcc54783bfb73d5b55747354/FLAG97dfd486b [2021-12-28 03:18:07,763 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:18:07,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2021-12-28 03:18:07,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd062c8ad/835c20e8bcc54783bfb73d5b55747354/FLAG97dfd486b [2021-12-28 03:18:07,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd062c8ad/835c20e8bcc54783bfb73d5b55747354 [2021-12-28 03:18:07,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:18:07,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:18:07,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:18:07,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:18:07,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:18:07,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:18:07" (1/1) ... [2021-12-28 03:18:07,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b90f87e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:07, skipping insertion in model container [2021-12-28 03:18:07,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:18:07" (1/1) ... [2021-12-28 03:18:07,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:18:08,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:18:08,242 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_iter_begin_harness.i[4493,4506] [2021-12-28 03:18:08,248 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_iter_begin_harness.i[4553,4566] [2021-12-28 03:18:08,817 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:08,818 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:08,818 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:08,819 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:08,820 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:08,827 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:08,830 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:08,832 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:08,834 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:08,836 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:08,837 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:08,838 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:08,838 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,058 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:18:09,059 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:18:09,060 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:18:09,061 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:18:09,061 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:18:09,062 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:18:09,062 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:18:09,063 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:18:09,063 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:18:09,064 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:18:09,187 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:18:09,420 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,422 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,437 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,438 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,443 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,444 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,458 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,459 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,459 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,460 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,460 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,461 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,461 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:18:09,520 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:18:09,539 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_iter_begin_harness.i[4493,4506] [2021-12-28 03:18:09,540 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_iter_begin_harness.i[4553,4566] [2021-12-28 03:18:09,570 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,570 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,571 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,571 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,571 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,576 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,577 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,579 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,579 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,579 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,580 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,580 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,580 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,597 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:18:09,598 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:18:09,598 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:18:09,599 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:18:09,611 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:18:09,612 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:18:09,612 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:18:09,612 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:18:09,612 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:18:09,613 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:18:09,633 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:18:09,707 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,707 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,711 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,711 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,713 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,713 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,722 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,723 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,723 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,723 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,724 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,724 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,725 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:09,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:18:09,969 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:18:09,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:09 WrapperNode [2021-12-28 03:18:09,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:18:09,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:18:09,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:18:09,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:18:09,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:09" (1/1) ... [2021-12-28 03:18:10,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:09" (1/1) ... [2021-12-28 03:18:10,128 INFO L137 Inliner]: procedures = 774, calls = 2446, calls flagged for inlining = 67, calls inlined = 11, statements flattened = 624 [2021-12-28 03:18:10,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:18:10,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:18:10,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:18:10,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:18:10,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:09" (1/1) ... [2021-12-28 03:18:10,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:09" (1/1) ... [2021-12-28 03:18:10,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:09" (1/1) ... [2021-12-28 03:18:10,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:09" (1/1) ... [2021-12-28 03:18:10,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:09" (1/1) ... [2021-12-28 03:18:10,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:09" (1/1) ... [2021-12-28 03:18:10,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:09" (1/1) ... [2021-12-28 03:18:10,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:18:10,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:18:10,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:18:10,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:18:10,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:09" (1/1) ... [2021-12-28 03:18:10,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:18:10,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:10,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 03:18:10,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 03:18:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-28 03:18:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:18:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-28 03:18:10,332 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-28 03:18:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:18:10,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:18:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-28 03:18:10,332 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-28 03:18:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:18:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:18:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:18:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:18:10,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:18:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:18:10,333 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:18:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-28 03:18:10,333 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-28 03:18:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 03:18:10,334 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 03:18:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:18:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-28 03:18:10,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-28 03:18:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:18:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-28 03:18:10,334 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-28 03:18:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:18:10,335 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-28 03:18:10,335 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-28 03:18:10,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:18:10,335 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_begin [2021-12-28 03:18:10,335 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_begin [2021-12-28 03:18:10,336 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-28 03:18:10,336 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-28 03:18:10,336 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2021-12-28 03:18:10,336 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2021-12-28 03:18:10,336 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:18:10,336 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:18:10,336 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2021-12-28 03:18:10,336 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2021-12-28 03:18:10,337 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-28 03:18:10,337 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-28 03:18:10,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:18:10,337 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-28 03:18:10,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-28 03:18:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-28 03:18:10,340 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-28 03:18:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:18:10,610 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:18:10,611 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:18:10,692 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2021-12-28 03:18:11,242 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:18:11,249 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:18:11,249 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-28 03:18:11,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:18:11 BoogieIcfgContainer [2021-12-28 03:18:11,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:18:11,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:18:11,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:18:11,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:18:11,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:18:07" (1/3) ... [2021-12-28 03:18:11,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec8ac8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:18:11, skipping insertion in model container [2021-12-28 03:18:11,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:09" (2/3) ... [2021-12-28 03:18:11,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec8ac8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:18:11, skipping insertion in model container [2021-12-28 03:18:11,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:18:11" (3/3) ... [2021-12-28 03:18:11,261 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_begin_harness.i [2021-12-28 03:18:11,264 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:18:11,264 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:18:11,302 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:18:11,310 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:18:11,311 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:18:11,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 114 states have (on average 1.2456140350877194) internal successors, (142), 113 states have internal predecessors, (142), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-12-28 03:18:11,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-28 03:18:11,338 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:11,339 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:11,340 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:11,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:11,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1612502020, now seen corresponding path program 1 times [2021-12-28 03:18:11,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:11,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670370893] [2021-12-28 03:18:11,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:11,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:11,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:11,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:11,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:11,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:11,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:11,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:11,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670370893] [2021-12-28 03:18:11,810 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-28 03:18:11,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319399855] [2021-12-28 03:18:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:11,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:11,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:11,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:18:11,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:18:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:12,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 2556 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 03:18:12,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-12-28 03:18:12,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:12,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319399855] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:12,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:18:12,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 03:18:12,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875093883] [2021-12-28 03:18:12,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:12,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 03:18:12,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:12,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 03:18:12,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:18:12,521 INFO L87 Difference]: Start difference. First operand has 171 states, 114 states have (on average 1.2456140350877194) internal successors, (142), 113 states have internal predecessors, (142), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-28 03:18:12,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:12,567 INFO L93 Difference]: Finished difference Result 333 states and 453 transitions. [2021-12-28 03:18:12,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 03:18:12,572 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 148 [2021-12-28 03:18:12,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:12,578 INFO L225 Difference]: With dead ends: 333 [2021-12-28 03:18:12,578 INFO L226 Difference]: Without dead ends: 164 [2021-12-28 03:18:12,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:18:12,583 INFO L933 BasicCegarLoop]: 215 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, 215 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 [2021-12-28 03:18:12,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:18:12,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-12-28 03:18:12,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-12-28 03:18:12,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 107 states have internal predecessors, (130), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-28 03:18:12,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 209 transitions. [2021-12-28 03:18:12,638 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 209 transitions. Word has length 148 [2021-12-28 03:18:12,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:12,639 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 209 transitions. [2021-12-28 03:18:12,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-28 03:18:12,639 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 209 transitions. [2021-12-28 03:18:12,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-28 03:18:12,641 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:12,642 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:12,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:12,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-28 03:18:12,862 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:12,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:12,862 INFO L85 PathProgramCache]: Analyzing trace with hash 818348810, now seen corresponding path program 1 times [2021-12-28 03:18:12,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:12,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869045700] [2021-12-28 03:18:12,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:12,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:12,933 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:18:12,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [959695343] [2021-12-28 03:18:12,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:12,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:12,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:12,935 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:18:12,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:18:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:13,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 2584 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 03:18:13,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-12-28 03:18:13,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:18:13,972 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-28 03:18:13,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:13,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869045700] [2021-12-28 03:18:13,973 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:18:13,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959695343] [2021-12-28 03:18:13,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959695343] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:13,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:13,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2021-12-28 03:18:13,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396631137] [2021-12-28 03:18:13,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:13,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:18:13,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:13,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:18:13,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:18:13,976 INFO L87 Difference]: Start difference. First operand 164 states and 209 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-28 03:18:14,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:14,261 INFO L93 Difference]: Finished difference Result 230 states and 298 transitions. [2021-12-28 03:18:14,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:18:14,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 154 [2021-12-28 03:18:14,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:14,264 INFO L225 Difference]: With dead ends: 230 [2021-12-28 03:18:14,264 INFO L226 Difference]: Without dead ends: 166 [2021-12-28 03:18:14,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:18:14,266 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 212 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:14,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 827 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:18:14,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-28 03:18:14,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-28 03:18:14,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 107 states have (on average 1.2242990654205608) internal successors, (131), 109 states have internal predecessors, (131), 40 states have call successors, (40), 17 states have call predecessors, (40), 18 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2021-12-28 03:18:14,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 211 transitions. [2021-12-28 03:18:14,277 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 211 transitions. Word has length 154 [2021-12-28 03:18:14,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:14,277 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 211 transitions. [2021-12-28 03:18:14,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-28 03:18:14,278 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 211 transitions. [2021-12-28 03:18:14,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-28 03:18:14,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:14,279 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:14,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:14,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-28 03:18:14,495 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:14,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:14,496 INFO L85 PathProgramCache]: Analyzing trace with hash -226987588, now seen corresponding path program 1 times [2021-12-28 03:18:14,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:14,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124473806] [2021-12-28 03:18:14,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:14,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:14,544 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:18:14,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212493362] [2021-12-28 03:18:14,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:14,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:14,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:14,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:18:14,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:18:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:14,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 2589 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 03:18:14,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:15,179 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-28 03:18:15,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:15,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:15,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124473806] [2021-12-28 03:18:15,179 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:18:15,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212493362] [2021-12-28 03:18:15,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212493362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:15,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:18:15,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:18:15,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387218730] [2021-12-28 03:18:15,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:15,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:18:15,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:15,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:18:15,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:18:15,181 INFO L87 Difference]: Start difference. First operand 166 states and 211 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-28 03:18:15,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:15,202 INFO L93 Difference]: Finished difference Result 325 states and 414 transitions. [2021-12-28 03:18:15,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:18:15,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 155 [2021-12-28 03:18:15,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:15,210 INFO L225 Difference]: With dead ends: 325 [2021-12-28 03:18:15,210 INFO L226 Difference]: Without dead ends: 171 [2021-12-28 03:18:15,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:18:15,216 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 2 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:15,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 820 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:18:15,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-12-28 03:18:15,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2021-12-28 03:18:15,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 111 states have (on average 1.2162162162162162) internal successors, (135), 113 states have internal predecessors, (135), 40 states have call successors, (40), 17 states have call predecessors, (40), 19 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) [2021-12-28 03:18:15,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 216 transitions. [2021-12-28 03:18:15,234 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 216 transitions. Word has length 155 [2021-12-28 03:18:15,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:15,236 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 216 transitions. [2021-12-28 03:18:15,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-28 03:18:15,236 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 216 transitions. [2021-12-28 03:18:15,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-28 03:18:15,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:15,241 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:15,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:15,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:15,455 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:15,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:15,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1170775228, now seen corresponding path program 1 times [2021-12-28 03:18:15,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:15,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666732415] [2021-12-28 03:18:15,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:15,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:18:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:18:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 03:18:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:18:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:18:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 03:18:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-28 03:18:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 03:18:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-28 03:18:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-28 03:18:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-28 03:18:15,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:15,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666732415] [2021-12-28 03:18:15,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666732415] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:15,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769366312] [2021-12-28 03:18:15,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:15,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:15,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:15,951 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:18:15,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:18:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:16,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 2597 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-28 03:18:16,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:16,565 INFO L387 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 [2021-12-28 03:18:16,928 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-28 03:18:16,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:16,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769366312] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:16,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:16,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2021-12-28 03:18:16,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766150116] [2021-12-28 03:18:16,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:16,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 03:18:16,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:16,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 03:18:16,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-12-28 03:18:16,932 INFO L87 Difference]: Start difference. First operand 171 states and 216 transitions. Second operand has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-28 03:18:17,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:17,084 INFO L93 Difference]: Finished difference Result 330 states and 416 transitions. [2021-12-28 03:18:17,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 03:18:17,084 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 167 [2021-12-28 03:18:17,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:17,086 INFO L225 Difference]: With dead ends: 330 [2021-12-28 03:18:17,086 INFO L226 Difference]: Without dead ends: 180 [2021-12-28 03:18:17,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2021-12-28 03:18:17,087 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 12 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:17,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 1688 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 128 Unchecked, 0.1s Time] [2021-12-28 03:18:17,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-12-28 03:18:17,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-12-28 03:18:17,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 119 states have (on average 1.218487394957983) internal successors, (145), 121 states have internal predecessors, (145), 40 states have call successors, (40), 18 states have call predecessors, (40), 20 states have return successors, (42), 40 states have call predecessors, (42), 39 states have call successors, (42) [2021-12-28 03:18:17,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 227 transitions. [2021-12-28 03:18:17,100 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 227 transitions. Word has length 167 [2021-12-28 03:18:17,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:17,100 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 227 transitions. [2021-12-28 03:18:17,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-28 03:18:17,101 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 227 transitions. [2021-12-28 03:18:17,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-28 03:18:17,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:17,102 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:17,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:17,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:17,319 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:17,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:17,320 INFO L85 PathProgramCache]: Analyzing trace with hash -695933446, now seen corresponding path program 1 times [2021-12-28 03:18:17,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:17,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907247010] [2021-12-28 03:18:17,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:17,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:18:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:18:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 03:18:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:18:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:18:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 03:18:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-28 03:18:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 03:18:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-28 03:18:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-28 03:18:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:17,719 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-28 03:18:17,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:17,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907247010] [2021-12-28 03:18:17,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907247010] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:17,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732955189] [2021-12-28 03:18:17,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:17,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:17,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:17,736 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:18:17,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:18:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:18,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:18:18,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-28 03:18:18,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:18,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732955189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:18,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:18,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2021-12-28 03:18:18,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539102608] [2021-12-28 03:18:18,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:18,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:18:18,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:18,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:18:18,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:18:18,412 INFO L87 Difference]: Start difference. First operand 180 states and 227 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-28 03:18:18,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:18,518 INFO L93 Difference]: Finished difference Result 334 states and 425 transitions. [2021-12-28 03:18:18,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:18:18,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 167 [2021-12-28 03:18:18,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:18,520 INFO L225 Difference]: With dead ends: 334 [2021-12-28 03:18:18,520 INFO L226 Difference]: Without dead ends: 182 [2021-12-28 03:18:18,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:18:18,521 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 217 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:18,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 519 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:18:18,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-12-28 03:18:18,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-12-28 03:18:18,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 120 states have (on average 1.2083333333333333) internal successors, (145), 122 states have internal predecessors, (145), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2021-12-28 03:18:18,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 231 transitions. [2021-12-28 03:18:18,530 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 231 transitions. Word has length 167 [2021-12-28 03:18:18,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:18,531 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 231 transitions. [2021-12-28 03:18:18,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-28 03:18:18,531 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 231 transitions. [2021-12-28 03:18:18,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-28 03:18:18,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:18,532 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:18,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:18,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:18,751 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:18,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:18,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1022744148, now seen corresponding path program 1 times [2021-12-28 03:18:18,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:18,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153332944] [2021-12-28 03:18:18,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:18,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:18,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:18,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:18,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:18,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:18,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:18,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:18,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:18,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:18,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:18,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:18,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:18,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:18,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:19,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:18:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:19,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 03:18:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:19,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:19,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:19,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:19,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 03:18:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:19,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 03:18:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:19,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 03:18:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:19,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-28 03:18:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:19,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 03:18:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:19,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-28 03:18:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-28 03:18:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:19,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-28 03:18:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:19,095 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-12-28 03:18:19,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:19,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153332944] [2021-12-28 03:18:19,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153332944] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:19,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263870202] [2021-12-28 03:18:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:19,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:19,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:19,097 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:18:19,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 03:18:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:19,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 2621 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-28 03:18:19,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:20,400 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$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 [2021-12-28 03:18:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-12-28 03:18:26,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:26,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263870202] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:26,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:26,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2021-12-28 03:18:26,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518845591] [2021-12-28 03:18:26,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:26,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:18:26,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:26,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:18:26,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=202, Unknown=3, NotChecked=28, Total=272 [2021-12-28 03:18:26,271 INFO L87 Difference]: Start difference. First operand 182 states and 231 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-28 03:18:26,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:26,445 INFO L93 Difference]: Finished difference Result 341 states and 443 transitions. [2021-12-28 03:18:26,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:18:26,446 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 173 [2021-12-28 03:18:26,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:26,447 INFO L225 Difference]: With dead ends: 341 [2021-12-28 03:18:26,447 INFO L226 Difference]: Without dead ends: 185 [2021-12-28 03:18:26,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=54, Invalid=253, Unknown=3, NotChecked=32, Total=342 [2021-12-28 03:18:26,454 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 5 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 313 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:26,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 1107 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 313 Unchecked, 0.1s Time] [2021-12-28 03:18:26,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-28 03:18:26,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2021-12-28 03:18:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 122 states have (on average 1.2049180327868851) internal successors, (147), 123 states have internal predecessors, (147), 41 states have call successors, (41), 19 states have call predecessors, (41), 20 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2021-12-28 03:18:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 233 transitions. [2021-12-28 03:18:26,467 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 233 transitions. Word has length 173 [2021-12-28 03:18:26,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:26,467 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 233 transitions. [2021-12-28 03:18:26,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-28 03:18:26,468 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 233 transitions. [2021-12-28 03:18:26,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-28 03:18:26,469 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:26,469 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:26,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-28 03:18:26,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:26,674 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:26,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:26,675 INFO L85 PathProgramCache]: Analyzing trace with hash -183837512, now seen corresponding path program 1 times [2021-12-28 03:18:26,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:26,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207983019] [2021-12-28 03:18:26,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:26,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:18:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:18:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:26,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:18:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:27,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:18:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:27,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 03:18:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:27,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 03:18:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:27,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-28 03:18:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:27,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-28 03:18:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:27,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-28 03:18:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:27,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-28 03:18:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:27,113 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-12-28 03:18:27,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:27,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207983019] [2021-12-28 03:18:27,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207983019] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:27,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034943961] [2021-12-28 03:18:27,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:27,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:27,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:27,114 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:18:27,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 03:18:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:27,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 2651 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-28 03:18:27,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:27,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:27,816 INFO L387 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 [2021-12-28 03:18:28,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:28,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:28,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:28,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:28,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:28,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:28,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:28,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:28,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:28,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:28,147 INFO L387 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 [2021-12-28 03:18:28,298 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-28 03:18:28,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:28,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034943961] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:28,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:28,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [17] total 30 [2021-12-28 03:18:28,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272035896] [2021-12-28 03:18:28,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:28,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 03:18:28,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:28,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 03:18:28,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2021-12-28 03:18:28,300 INFO L87 Difference]: Start difference. First operand 184 states and 233 transitions. Second operand has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 8 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-28 03:18:28,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:28,639 INFO L93 Difference]: Finished difference Result 346 states and 435 transitions. [2021-12-28 03:18:28,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-28 03:18:28,639 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 8 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 178 [2021-12-28 03:18:28,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:28,641 INFO L225 Difference]: With dead ends: 346 [2021-12-28 03:18:28,641 INFO L226 Difference]: Without dead ends: 267 [2021-12-28 03:18:28,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 211 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=1280, Unknown=0, NotChecked=0, Total=1406 [2021-12-28 03:18:28,642 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 214 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:28,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 1090 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 159 Invalid, 0 Unknown, 92 Unchecked, 0.2s Time] [2021-12-28 03:18:28,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-28 03:18:28,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 258. [2021-12-28 03:18:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 181 states have (on average 1.2375690607734806) internal successors, (224), 181 states have internal predecessors, (224), 47 states have call successors, (47), 30 states have call predecessors, (47), 29 states have return successors, (51), 46 states have call predecessors, (51), 46 states have call successors, (51) [2021-12-28 03:18:28,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 322 transitions. [2021-12-28 03:18:28,652 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 322 transitions. Word has length 178 [2021-12-28 03:18:28,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:28,652 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 322 transitions. [2021-12-28 03:18:28,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 8 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-28 03:18:28,653 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 322 transitions. [2021-12-28 03:18:28,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-28 03:18:28,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:28,654 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:28,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:28,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:28,868 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:28,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:28,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1017170911, now seen corresponding path program 1 times [2021-12-28 03:18:28,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:28,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758317056] [2021-12-28 03:18:28,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:28,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:18:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:18:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:18:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:18:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 03:18:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 03:18:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-28 03:18:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:18:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-28 03:18:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,344 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-12-28 03:18:29,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:29,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758317056] [2021-12-28 03:18:29,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758317056] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:29,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686644024] [2021-12-28 03:18:29,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:29,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:29,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:29,346 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:18:29,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 03:18:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:29,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-28 03:18:29,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:30,064 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-28 03:18:30,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:30,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686644024] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:30,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:30,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2021-12-28 03:18:30,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628644629] [2021-12-28 03:18:30,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:30,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:18:30,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:30,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:18:30,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2021-12-28 03:18:30,066 INFO L87 Difference]: Start difference. First operand 258 states and 322 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-28 03:18:30,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:30,184 INFO L93 Difference]: Finished difference Result 438 states and 552 transitions. [2021-12-28 03:18:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:18:30,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 182 [2021-12-28 03:18:30,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:30,187 INFO L225 Difference]: With dead ends: 438 [2021-12-28 03:18:30,187 INFO L226 Difference]: Without dead ends: 267 [2021-12-28 03:18:30,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2021-12-28 03:18:30,188 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 2 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:30,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1162 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:18:30,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-28 03:18:30,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-12-28 03:18:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 187 states have (on average 1.2299465240641712) internal successors, (230), 190 states have internal predecessors, (230), 47 states have call successors, (47), 30 states have call predecessors, (47), 32 states have return successors, (55), 46 states have call predecessors, (55), 46 states have call successors, (55) [2021-12-28 03:18:30,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 332 transitions. [2021-12-28 03:18:30,198 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 332 transitions. Word has length 182 [2021-12-28 03:18:30,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:30,199 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 332 transitions. [2021-12-28 03:18:30,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-28 03:18:30,199 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 332 transitions. [2021-12-28 03:18:30,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-12-28 03:18:30,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:30,201 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:30,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:30,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-28 03:18:30,408 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:30,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:30,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1394290473, now seen corresponding path program 2 times [2021-12-28 03:18:30,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:30,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500357575] [2021-12-28 03:18:30,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:30,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:18:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:18:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:18:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:18:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 03:18:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-28 03:18:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-28 03:18:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:18:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:30,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-28 03:18:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-12-28 03:18:31,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:31,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500357575] [2021-12-28 03:18:31,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500357575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:31,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:18:31,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-12-28 03:18:31,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531394102] [2021-12-28 03:18:31,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:31,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-28 03:18:31,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:31,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-28 03:18:31,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2021-12-28 03:18:31,017 INFO L87 Difference]: Start difference. First operand 267 states and 332 transitions. Second operand has 20 states, 17 states have (on average 4.588235294117647) internal successors, (78), 14 states have internal predecessors, (78), 9 states have call successors, (27), 7 states have call predecessors, (27), 4 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2021-12-28 03:18:33,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:33,110 INFO L93 Difference]: Finished difference Result 400 states and 511 transitions. [2021-12-28 03:18:33,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-28 03:18:33,111 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.588235294117647) internal successors, (78), 14 states have internal predecessors, (78), 9 states have call successors, (27), 7 states have call predecessors, (27), 4 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) Word has length 193 [2021-12-28 03:18:33,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:33,113 INFO L225 Difference]: With dead ends: 400 [2021-12-28 03:18:33,113 INFO L226 Difference]: Without dead ends: 324 [2021-12-28 03:18:33,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=1258, Unknown=0, NotChecked=0, Total=1482 [2021-12-28 03:18:33,114 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 341 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 2396 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 2661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 2396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:33,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 1069 Invalid, 2661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 2396 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-28 03:18:33,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-12-28 03:18:33,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 297. [2021-12-28 03:18:33,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 206 states have (on average 1.2281553398058251) internal successors, (253), 212 states have internal predecessors, (253), 53 states have call successors, (53), 30 states have call predecessors, (53), 37 states have return successors, (69), 54 states have call predecessors, (69), 52 states have call successors, (69) [2021-12-28 03:18:33,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 375 transitions. [2021-12-28 03:18:33,146 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 375 transitions. Word has length 193 [2021-12-28 03:18:33,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:33,146 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 375 transitions. [2021-12-28 03:18:33,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.588235294117647) internal successors, (78), 14 states have internal predecessors, (78), 9 states have call successors, (27), 7 states have call predecessors, (27), 4 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2021-12-28 03:18:33,146 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 375 transitions. [2021-12-28 03:18:33,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-12-28 03:18:33,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:33,149 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:33,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 03:18:33,149 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:33,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:33,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1903763563, now seen corresponding path program 1 times [2021-12-28 03:18:33,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:33,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812288643] [2021-12-28 03:18:33,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:33,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:18:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:18:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:18:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:18:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 03:18:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-28 03:18:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-28 03:18:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:18:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-28 03:18:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:33,892 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-12-28 03:18:33,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:33,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812288643] [2021-12-28 03:18:33,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812288643] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:33,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781371847] [2021-12-28 03:18:33,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:33,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:33,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:33,894 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:18:33,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 03:18:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:34,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-28 03:18:34,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-12-28 03:18:34,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:34,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781371847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:34,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:34,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [20] total 25 [2021-12-28 03:18:34,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502520318] [2021-12-28 03:18:34,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:34,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:18:34,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:34,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:18:34,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2021-12-28 03:18:34,626 INFO L87 Difference]: Start difference. First operand 297 states and 375 transitions. Second operand has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-28 03:18:34,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:34,702 INFO L93 Difference]: Finished difference Result 432 states and 548 transitions. [2021-12-28 03:18:34,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:18:34,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 193 [2021-12-28 03:18:34,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:34,707 INFO L225 Difference]: With dead ends: 432 [2021-12-28 03:18:34,707 INFO L226 Difference]: Without dead ends: 270 [2021-12-28 03:18:34,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2021-12-28 03:18:34,708 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 2 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:34,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1162 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:18:34,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-12-28 03:18:34,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 268. [2021-12-28 03:18:34,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 185 states have (on average 1.2216216216216216) internal successors, (226), 189 states have internal predecessors, (226), 49 states have call successors, (49), 28 states have call predecessors, (49), 33 states have return successors, (61), 50 states have call predecessors, (61), 48 states have call successors, (61) [2021-12-28 03:18:34,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 336 transitions. [2021-12-28 03:18:34,721 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 336 transitions. Word has length 193 [2021-12-28 03:18:34,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:34,722 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 336 transitions. [2021-12-28 03:18:34,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-28 03:18:34,722 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 336 transitions. [2021-12-28 03:18:34,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-28 03:18:34,723 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:34,723 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:34,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:34,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-28 03:18:34,944 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:34,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:34,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1026335268, now seen corresponding path program 1 times [2021-12-28 03:18:34,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:34,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88948186] [2021-12-28 03:18:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:34,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:18:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:18:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:18:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:18:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 03:18:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-28 03:18:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-28 03:18:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-28 03:18:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-28 03:18:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-28 03:18:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:35,252 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-12-28 03:18:35,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:35,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88948186] [2021-12-28 03:18:35,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88948186] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:35,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:18:35,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:18:35,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883858691] [2021-12-28 03:18:35,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:35,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:18:35,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:35,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:18:35,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:18:35,254 INFO L87 Difference]: Start difference. First operand 268 states and 336 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-28 03:18:35,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:35,816 INFO L93 Difference]: Finished difference Result 446 states and 567 transitions. [2021-12-28 03:18:35,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 03:18:35,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 195 [2021-12-28 03:18:35,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:35,839 INFO L225 Difference]: With dead ends: 446 [2021-12-28 03:18:35,839 INFO L226 Difference]: Without dead ends: 259 [2021-12-28 03:18:35,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:18:35,841 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 128 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:35,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 462 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 03:18:35,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-12-28 03:18:35,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 238. [2021-12-28 03:18:35,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 165 states have (on average 1.206060606060606) internal successors, (199), 168 states have internal predecessors, (199), 43 states have call successors, (43), 26 states have call predecessors, (43), 29 states have return successors, (48), 43 states have call predecessors, (48), 42 states have call successors, (48) [2021-12-28 03:18:35,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 290 transitions. [2021-12-28 03:18:35,857 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 290 transitions. Word has length 195 [2021-12-28 03:18:35,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:35,857 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 290 transitions. [2021-12-28 03:18:35,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-28 03:18:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 290 transitions. [2021-12-28 03:18:35,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-28 03:18:35,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:35,859 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:35,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 03:18:35,859 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:35,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:35,859 INFO L85 PathProgramCache]: Analyzing trace with hash 450820696, now seen corresponding path program 1 times [2021-12-28 03:18:35,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:35,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152238820] [2021-12-28 03:18:35,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:35,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:18:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:18:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:18:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:18:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 03:18:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-28 03:18:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-28 03:18:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-28 03:18:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-28 03:18:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-28 03:18:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:36,622 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-12-28 03:18:36,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:36,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152238820] [2021-12-28 03:18:36,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152238820] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:36,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126077057] [2021-12-28 03:18:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:36,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:36,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:36,628 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:18:36,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 03:18:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:37,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 2759 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-28 03:18:37,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:37,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:37,431 INFO L387 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 [2021-12-28 03:18:37,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:37,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:37,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:37,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:37,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:37,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:37,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:37,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:37,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:37,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:37,796 INFO L387 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 [2021-12-28 03:18:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-12-28 03:18:37,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:37,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126077057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:37,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:37,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [19] total 32 [2021-12-28 03:18:37,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884519927] [2021-12-28 03:18:37,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:37,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 03:18:37,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:37,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 03:18:37,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2021-12-28 03:18:37,947 INFO L87 Difference]: Start difference. First operand 238 states and 290 transitions. Second operand has 15 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 9 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2021-12-28 03:18:38,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:38,391 INFO L93 Difference]: Finished difference Result 334 states and 405 transitions. [2021-12-28 03:18:38,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-28 03:18:38,391 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 9 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 200 [2021-12-28 03:18:38,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:38,392 INFO L225 Difference]: With dead ends: 334 [2021-12-28 03:18:38,392 INFO L226 Difference]: Without dead ends: 254 [2021-12-28 03:18:38,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 240 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=1413, Unknown=0, NotChecked=0, Total=1560 [2021-12-28 03:18:38,394 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 199 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 188 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:38,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 1946 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 308 Invalid, 0 Unknown, 188 Unchecked, 0.3s Time] [2021-12-28 03:18:38,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-12-28 03:18:38,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 249. [2021-12-28 03:18:38,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 172 states have (on average 1.191860465116279) internal successors, (205), 175 states have internal predecessors, (205), 45 states have call successors, (45), 28 states have call predecessors, (45), 31 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2021-12-28 03:18:38,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 299 transitions. [2021-12-28 03:18:38,402 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 299 transitions. Word has length 200 [2021-12-28 03:18:38,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:38,402 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 299 transitions. [2021-12-28 03:18:38,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 9 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2021-12-28 03:18:38,402 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 299 transitions. [2021-12-28 03:18:38,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-28 03:18:38,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:38,405 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:38,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:38,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-28 03:18:38,619 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:38,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:38,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1734404003, now seen corresponding path program 1 times [2021-12-28 03:18:38,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:38,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152311881] [2021-12-28 03:18:38,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:38,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:18:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:18:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:18:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:18:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:18:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:18:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:18:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:18:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:18:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:18:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:18:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 03:18:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-28 03:18:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-28 03:18:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-28 03:18:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:18:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-28 03:18:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-28 03:18:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:18:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,590 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 24 proven. 22 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-12-28 03:18:39,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:39,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152311881] [2021-12-28 03:18:39,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152311881] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:39,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723572890] [2021-12-28 03:18:39,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:39,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:39,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:39,592 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:18:39,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-28 03:18:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:40,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 2786 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-28 03:18:40,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2021-12-28 03:18:40,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:40,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723572890] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:40,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:40,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [30] total 34 [2021-12-28 03:18:40,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927307565] [2021-12-28 03:18:40,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:40,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:18:40,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:40,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:18:40,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1041, Unknown=0, NotChecked=0, Total=1122 [2021-12-28 03:18:40,460 INFO L87 Difference]: Start difference. First operand 249 states and 299 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-12-28 03:18:40,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:40,538 INFO L93 Difference]: Finished difference Result 488 states and 585 transitions. [2021-12-28 03:18:40,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:18:40,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 209 [2021-12-28 03:18:40,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:40,540 INFO L225 Difference]: With dead ends: 488 [2021-12-28 03:18:40,540 INFO L226 Difference]: Without dead ends: 251 [2021-12-28 03:18:40,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2021-12-28 03:18:40,541 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 2 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:40,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 951 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:18:40,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-12-28 03:18:40,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2021-12-28 03:18:40,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 173 states have (on average 1.1907514450867052) internal successors, (206), 177 states have internal predecessors, (206), 45 states have call successors, (45), 28 states have call predecessors, (45), 32 states have return successors, (50), 45 states have call predecessors, (50), 44 states have call successors, (50) [2021-12-28 03:18:40,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 301 transitions. [2021-12-28 03:18:40,551 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 301 transitions. Word has length 209 [2021-12-28 03:18:40,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:40,551 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 301 transitions. [2021-12-28 03:18:40,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-12-28 03:18:40,552 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 301 transitions. [2021-12-28 03:18:40,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-12-28 03:18:40,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:40,553 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:40,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:40,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-28 03:18:40,767 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:40,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:40,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1271160118, now seen corresponding path program 1 times [2021-12-28 03:18:40,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:40,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382335217] [2021-12-28 03:18:40,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:40,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:40,805 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:18:40,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220488639] [2021-12-28 03:18:40,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:40,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:40,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:40,806 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:18:40,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-28 03:18:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:41,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-28 03:18:41,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-28 03:18:41,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:41,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:41,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382335217] [2021-12-28 03:18:41,591 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:18:41,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220488639] [2021-12-28 03:18:41,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220488639] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:41,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:18:41,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:18:41,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229125402] [2021-12-28 03:18:41,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:41,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:18:41,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:41,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:18:41,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:18:41,593 INFO L87 Difference]: Start difference. First operand 251 states and 301 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-28 03:18:41,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:41,676 INFO L93 Difference]: Finished difference Result 429 states and 516 transitions. [2021-12-28 03:18:41,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:18:41,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 215 [2021-12-28 03:18:41,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:41,678 INFO L225 Difference]: With dead ends: 429 [2021-12-28 03:18:41,679 INFO L226 Difference]: Without dead ends: 249 [2021-12-28 03:18:41,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:18:41,680 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 2 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:41,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 951 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:18:41,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-12-28 03:18:41,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 244. [2021-12-28 03:18:41,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 168 states have (on average 1.1845238095238095) internal successors, (199), 171 states have internal predecessors, (199), 45 states have call successors, (45), 28 states have call predecessors, (45), 30 states have return successors, (48), 44 states have call predecessors, (48), 44 states have call successors, (48) [2021-12-28 03:18:41,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 292 transitions. [2021-12-28 03:18:41,691 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 292 transitions. Word has length 215 [2021-12-28 03:18:41,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:41,691 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 292 transitions. [2021-12-28 03:18:41,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-28 03:18:41,692 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 292 transitions. [2021-12-28 03:18:41,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-12-28 03:18:41,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:41,693 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-28 03:18:41,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-28 03:18:41,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-28 03:18:41,901 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:41,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:41,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1244691977, now seen corresponding path program 1 times [2021-12-28 03:18:41,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:41,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584912078] [2021-12-28 03:18:41,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:41,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:41,943 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:18:41,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2029874983] [2021-12-28 03:18:41,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:41,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:41,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:41,945 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:18:41,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-28 03:18:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:42,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 2996 conjuncts, 91 conjunts are in the unsatisfiable core [2021-12-28 03:18:42,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:42,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:42,798 INFO L387 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 [2021-12-28 03:18:42,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:42,802 INFO L387 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 [2021-12-28 03:18:43,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:18:43,515 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-28 03:18:43,515 INFO L387 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 [2021-12-28 03:18:43,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:43,543 INFO L353 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2021-12-28 03:18:43,544 INFO L387 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 [2021-12-28 03:18:44,208 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 115 proven. 5 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-12-28 03:18:44,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:18:46,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:46,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584912078] [2021-12-28 03:18:46,935 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:18:46,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029874983] [2021-12-28 03:18:46,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029874983] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:46,936 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:46,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-12-28 03:18:46,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291661211] [2021-12-28 03:18:46,937 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-28 03:18:46,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-28 03:18:46,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:46,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-28 03:18:46,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1065, Unknown=0, NotChecked=0, Total=1190 [2021-12-28 03:18:46,939 INFO L87 Difference]: Start difference. First operand 244 states and 292 transitions. Second operand has 26 states, 22 states have (on average 4.5) internal successors, (99), 24 states have internal predecessors, (99), 12 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2021-12-28 03:18:47,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:47,706 INFO L93 Difference]: Finished difference Result 335 states and 405 transitions. [2021-12-28 03:18:47,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-28 03:18:47,706 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 4.5) internal successors, (99), 24 states have internal predecessors, (99), 12 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 221 [2021-12-28 03:18:47,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:47,708 INFO L225 Difference]: With dead ends: 335 [2021-12-28 03:18:47,708 INFO L226 Difference]: Without dead ends: 255 [2021-12-28 03:18:47,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 205 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=197, Invalid=1783, Unknown=0, NotChecked=0, Total=1980 [2021-12-28 03:18:47,709 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 206 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 433 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:47,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 2295 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 363 Invalid, 0 Unknown, 433 Unchecked, 0.5s Time] [2021-12-28 03:18:47,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-12-28 03:18:47,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 248. [2021-12-28 03:18:47,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 171 states have (on average 1.1812865497076024) internal successors, (202), 174 states have internal predecessors, (202), 45 states have call successors, (45), 28 states have call predecessors, (45), 31 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2021-12-28 03:18:47,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 296 transitions. [2021-12-28 03:18:47,740 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 296 transitions. Word has length 221 [2021-12-28 03:18:47,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:47,740 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 296 transitions. [2021-12-28 03:18:47,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 4.5) internal successors, (99), 24 states have internal predecessors, (99), 12 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2021-12-28 03:18:47,741 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 296 transitions. [2021-12-28 03:18:47,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-12-28 03:18:47,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:47,742 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:47,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-28 03:18:47,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-28 03:18:47,947 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:47,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:47,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1831497991, now seen corresponding path program 1 times [2021-12-28 03:18:47,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:47,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025656106] [2021-12-28 03:18:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:47,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:47,989 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:18:47,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26597605] [2021-12-28 03:18:47,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:47,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:47,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:47,991 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:18:47,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-28 03:18:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:48,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 2991 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-28 03:18:48,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:49,549 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$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 [2021-12-28 03:18:54,310 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-12-28 03:18:54,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:54,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:54,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025656106] [2021-12-28 03:18:54,310 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:18:54,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26597605] [2021-12-28 03:18:54,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26597605] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:54,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:18:54,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:18:54,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460769491] [2021-12-28 03:18:54,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:54,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:18:54,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:54,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:18:54,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2021-12-28 03:18:54,312 INFO L87 Difference]: Start difference. First operand 248 states and 296 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-28 03:18:54,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:54,395 INFO L93 Difference]: Finished difference Result 348 states and 426 transitions. [2021-12-28 03:18:54,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:18:54,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 221 [2021-12-28 03:18:54,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:54,396 INFO L225 Difference]: With dead ends: 348 [2021-12-28 03:18:54,396 INFO L226 Difference]: Without dead ends: 243 [2021-12-28 03:18:54,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2021-12-28 03:18:54,397 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:54,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 913 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 303 Unchecked, 0.1s Time] [2021-12-28 03:18:54,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-12-28 03:18:54,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2021-12-28 03:18:54,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 165 states have (on average 1.1757575757575758) internal successors, (194), 167 states have internal predecessors, (194), 45 states have call successors, (45), 28 states have call predecessors, (45), 30 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2021-12-28 03:18:54,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 287 transitions. [2021-12-28 03:18:54,408 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 287 transitions. Word has length 221 [2021-12-28 03:18:54,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:54,409 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 287 transitions. [2021-12-28 03:18:54,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-28 03:18:54,409 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 287 transitions. [2021-12-28 03:18:54,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-12-28 03:18:54,410 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:54,410 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:54,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-28 03:18:54,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:54,627 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:54,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:54,628 INFO L85 PathProgramCache]: Analyzing trace with hash -359144008, now seen corresponding path program 1 times [2021-12-28 03:18:54,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:54,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522296982] [2021-12-28 03:18:54,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:54,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:54,691 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:18:54,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884034719] [2021-12-28 03:18:54,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:54,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:54,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:54,693 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:18:54,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-28 03:18:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:55,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 93 conjunts are in the unsatisfiable core [2021-12-28 03:18:55,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:55,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:55,560 INFO L387 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 [2021-12-28 03:18:55,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:55,565 INFO L387 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 [2021-12-28 03:18:56,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,245 INFO L353 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2021-12-28 03:18:56,245 INFO L387 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 [2021-12-28 03:18:56,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:56,267 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-28 03:18:56,267 INFO L387 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 [2021-12-28 03:18:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 115 proven. 5 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-12-28 03:18:57,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:18:57,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:18:57,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522296982] [2021-12-28 03:18:57,788 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:18:57,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884034719] [2021-12-28 03:18:57,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884034719] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:57,789 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:18:57,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-12-28 03:18:57,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557633335] [2021-12-28 03:18:57,789 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-28 03:18:57,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-28 03:18:57,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:57,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-28 03:18:57,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1124, Unknown=0, NotChecked=0, Total=1260 [2021-12-28 03:18:57,790 INFO L87 Difference]: Start difference. First operand 241 states and 287 transitions. Second operand has 27 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 24 states have internal predecessors, (100), 12 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2021-12-28 03:18:58,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:58,453 INFO L93 Difference]: Finished difference Result 329 states and 401 transitions. [2021-12-28 03:18:58,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-28 03:18:58,454 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 24 states have internal predecessors, (100), 12 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 222 [2021-12-28 03:18:58,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:58,455 INFO L225 Difference]: With dead ends: 329 [2021-12-28 03:18:58,455 INFO L226 Difference]: Without dead ends: 250 [2021-12-28 03:18:58,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 206 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=206, Invalid=1864, Unknown=0, NotChecked=0, Total=2070 [2021-12-28 03:18:58,456 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 209 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 318 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:58,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 2192 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 271 Invalid, 0 Unknown, 318 Unchecked, 0.4s Time] [2021-12-28 03:18:58,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-12-28 03:18:58,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 246. [2021-12-28 03:18:58,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 170 states have (on average 1.1705882352941177) internal successors, (199), 172 states have internal predecessors, (199), 45 states have call successors, (45), 28 states have call predecessors, (45), 30 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2021-12-28 03:18:58,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 292 transitions. [2021-12-28 03:18:58,465 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 292 transitions. Word has length 222 [2021-12-28 03:18:58,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:58,466 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 292 transitions. [2021-12-28 03:18:58,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 24 states have internal predecessors, (100), 12 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2021-12-28 03:18:58,466 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 292 transitions. [2021-12-28 03:18:58,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-12-28 03:18:58,467 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:58,467 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-28 03:18:58,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-28 03:18:58,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-28 03:18:58,671 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:58,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:58,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1437112506, now seen corresponding path program 1 times [2021-12-28 03:18:58,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:58,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235459438] [2021-12-28 03:18:58,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:58,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:58,724 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:18:58,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69968259] [2021-12-28 03:18:58,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:58,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:18:58,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:58,726 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:18:58,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-28 03:18:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:59,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 93 conjunts are in the unsatisfiable core [2021-12-28 03:18:59,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:59,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:59,577 INFO L387 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 [2021-12-28 03:18:59,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:18:59,581 INFO L387 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 [2021-12-28 03:19:08,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,097 INFO L353 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2021-12-28 03:19:08,099 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2021-12-28 03:19:08,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:19:08,112 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-28 03:19:08,112 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 78 [2021-12-28 03:19:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-12-28 03:19:09,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:19:11,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:19:11,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235459438] [2021-12-28 03:19:11,735 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:19:11,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69968259] [2021-12-28 03:19:11,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69968259] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:19:11,736 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:19:11,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-12-28 03:19:11,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665496617] [2021-12-28 03:19:11,736 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-28 03:19:11,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-28 03:19:11,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:19:11,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-28 03:19:11,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1211, Unknown=2, NotChecked=0, Total=1332 [2021-12-28 03:19:11,737 INFO L87 Difference]: Start difference. First operand 246 states and 292 transitions. Second operand has 28 states, 23 states have (on average 4.217391304347826) internal successors, (97), 24 states have internal predecessors, (97), 13 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29)