./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 44162e1142387f3513ac3cf9af71d3c7aa6399e99cd364d08a07ceb8efc80a41 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 00:40:43,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 00:40:43,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 00:40:43,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 00:40:43,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 00:40:43,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 00:40:43,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 00:40:43,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 00:40:43,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 00:40:43,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 00:40:43,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 00:40:43,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 00:40:43,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 00:40:43,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 00:40:43,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 00:40:43,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 00:40:43,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 00:40:43,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 00:40:43,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 00:40:43,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 00:40:43,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 00:40:43,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 00:40:43,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 00:40:43,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 00:40:43,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 00:40:43,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 00:40:43,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 00:40:43,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 00:40:43,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 00:40:43,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 00:40:43,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 00:40:43,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 00:40:43,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 00:40:43,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 00:40:43,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 00:40:43,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 00:40:43,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 00:40:43,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 00:40:43,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 00:40:43,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 00:40:43,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 00:40:43,725 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 00:40:43,750 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 00:40:43,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 00:40:43,751 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 00:40:43,751 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 00:40:43,752 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 00:40:43,752 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 00:40:43,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 00:40:43,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 00:40:43,753 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 00:40:43,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 00:40:43,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 00:40:43,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 00:40:43,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 00:40:43,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 00:40:43,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 00:40:43,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 00:40:43,754 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 00:40:43,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 00:40:43,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 00:40:43,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 00:40:43,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 00:40:43,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 00:40:43,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 00:40:43,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 00:40:43,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 00:40:43,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 00:40:43,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 00:40:43,756 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 00:40:43,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 00:40:43,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 00:40:43,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 00:40:43,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44162e1142387f3513ac3cf9af71d3c7aa6399e99cd364d08a07ceb8efc80a41 [2021-12-18 00:40:43,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 00:40:43,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 00:40:43,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 00:40:43,982 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 00:40:43,983 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 00:40:43,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i [2021-12-18 00:40:44,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6452cc2d2/917c47504dba4a1396415f636aa02bdf/FLAGc514e1165 [2021-12-18 00:40:44,651 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 00:40:44,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i [2021-12-18 00:40:44,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6452cc2d2/917c47504dba4a1396415f636aa02bdf/FLAGc514e1165 [2021-12-18 00:40:45,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6452cc2d2/917c47504dba4a1396415f636aa02bdf [2021-12-18 00:40:45,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 00:40:45,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 00:40:45,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 00:40:45,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 00:40:45,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 00:40:45,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 12:40:45" (1/1) ... [2021-12-18 00:40:45,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b823aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:40:45, skipping insertion in model container [2021-12-18 00:40:45,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 12:40:45" (1/1) ... [2021-12-18 00:40:45,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 00:40:45,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 00:40:45,353 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4496,4509] [2021-12-18 00:40:45,358 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4556,4569] [2021-12-18 00:40:45,974 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:45,974 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:45,975 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:45,975 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:45,976 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:45,982 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:45,985 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:45,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:45,987 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:45,988 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:45,989 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:45,989 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:45,989 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,227 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 00:40:46,228 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 00:40:46,228 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 00:40:46,229 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 00:40:46,230 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 00:40:46,230 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 00:40:46,230 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 00:40:46,231 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 00:40:46,231 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 00:40:46,231 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 00:40:46,370 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 00:40:46,546 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,551 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,567 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,569 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,574 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,574 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,587 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,588 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,590 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,590 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,590 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,590 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,591 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 00:40:46,670 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 00:40:46,686 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4496,4509] [2021-12-18 00:40:46,687 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4556,4569] [2021-12-18 00:40:46,713 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,714 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,714 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,714 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,715 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,719 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,721 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,722 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,723 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,723 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,724 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,724 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,724 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,742 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 00:40:46,742 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 00:40:46,743 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 00:40:46,743 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 00:40:46,744 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 00:40:46,744 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 00:40:46,745 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 00:40:46,745 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 00:40:46,745 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 00:40:46,746 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 00:40:46,765 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 00:40:46,849 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,850 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,854 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,855 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,856 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,857 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,866 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,866 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,867 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,867 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,868 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,868 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,869 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:40:46,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 00:40:47,038 INFO L208 MainTranslator]: Completed translation [2021-12-18 00:40:47,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:40:47 WrapperNode [2021-12-18 00:40:47,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 00:40:47,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 00:40:47,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 00:40:47,040 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 00:40:47,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:40:47" (1/1) ... [2021-12-18 00:40:47,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:40:47" (1/1) ... [2021-12-18 00:40:47,202 INFO L137 Inliner]: procedures = 775, calls = 2435, calls flagged for inlining = 69, calls inlined = 18, statements flattened = 938 [2021-12-18 00:40:47,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 00:40:47,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 00:40:47,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 00:40:47,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 00:40:47,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:40:47" (1/1) ... [2021-12-18 00:40:47,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:40:47" (1/1) ... [2021-12-18 00:40:47,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:40:47" (1/1) ... [2021-12-18 00:40:47,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:40:47" (1/1) ... [2021-12-18 00:40:47,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:40:47" (1/1) ... [2021-12-18 00:40:47,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:40:47" (1/1) ... [2021-12-18 00:40:47,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:40:47" (1/1) ... [2021-12-18 00:40:47,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 00:40:47,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 00:40:47,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 00:40:47,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 00:40:47,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:40:47" (1/1) ... [2021-12-18 00:40:47,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 00:40:47,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:40:47,339 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) [2021-12-18 00:40:47,359 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 [2021-12-18 00:40:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-18 00:40:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 00:40:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-18 00:40:47,370 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-18 00:40:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-18 00:40:47,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-18 00:40:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-18 00:40:47,371 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-18 00:40:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 00:40:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 00:40:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 00:40:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 00:40:47,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 00:40:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-18 00:40:47,372 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-18 00:40:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-18 00:40:47,372 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-18 00:40:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 00:40:47,372 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 00:40:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 00:40:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-18 00:40:47,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-18 00:40:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 00:40:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-18 00:40:47,373 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-18 00:40:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 00:40:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-18 00:40:47,373 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-18 00:40:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-12-18 00:40:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-12-18 00:40:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 00:40:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-18 00:40:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-18 00:40:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 00:40:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 00:40:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-12-18 00:40:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-12-18 00:40:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2021-12-18 00:40:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2021-12-18 00:40:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 00:40:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 00:40:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_int [2021-12-18 00:40:47,376 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_int [2021-12-18 00:40:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2021-12-18 00:40:47,378 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2021-12-18 00:40:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-18 00:40:47,378 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-18 00:40:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 00:40:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-18 00:40:47,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-18 00:40:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-18 00:40:47,380 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-18 00:40:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_entry [2021-12-18 00:40:47,384 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_entry [2021-12-18 00:40:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 00:40:47,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 00:40:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 00:40:47,689 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 00:40:47,690 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 00:40:47,863 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !true; [2021-12-18 00:40:47,863 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2021-12-18 00:40:48,270 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2021-12-18 00:40:48,281 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 00:40:48,287 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 00:40:48,287 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-18 00:40:48,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:40:48 BoogieIcfgContainer [2021-12-18 00:40:48,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 00:40:48,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 00:40:48,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 00:40:48,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 00:40:48,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 12:40:45" (1/3) ... [2021-12-18 00:40:48,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1068b55d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 12:40:48, skipping insertion in model container [2021-12-18 00:40:48,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:40:47" (2/3) ... [2021-12-18 00:40:48,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1068b55d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 12:40:48, skipping insertion in model container [2021-12-18 00:40:48,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:40:48" (3/3) ... [2021-12-18 00:40:48,294 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_foreach_harness.i [2021-12-18 00:40:48,297 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 00:40:48,298 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 00:40:48,328 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 00:40:48,333 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 [2021-12-18 00:40:48,333 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 00:40:48,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 288 states, 187 states have (on average 1.267379679144385) internal successors, (237), 184 states have internal predecessors, (237), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2021-12-18 00:40:48,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-18 00:40:48,355 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:40:48,356 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:40:48,356 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:40:48,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:40:48,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1669380125, now seen corresponding path program 1 times [2021-12-18 00:40:48,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:40:48,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424287594] [2021-12-18 00:40:48,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:40:48,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:40:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:48,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:40:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:48,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:40:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:48,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:40:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:48,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:40:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:48,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:40:48,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:40:48,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424287594] [2021-12-18 00:40:48,824 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-18 00:40:48,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16581698] [2021-12-18 00:40:48,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:40:48,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:40:48,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:40:48,826 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) [2021-12-18 00:40:48,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 00:40:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:49,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-18 00:40:49,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:40:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-18 00:40:49,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:40:49,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16581698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:40:49,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:40:49,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 00:40:49,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179143014] [2021-12-18 00:40:49,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:40:49,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-18 00:40:49,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:40:49,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-18 00:40:49,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 00:40:49,484 INFO L87 Difference]: Start difference. First operand has 288 states, 187 states have (on average 1.267379679144385) internal successors, (237), 184 states have internal predecessors, (237), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 00:40:49,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:40:49,562 INFO L93 Difference]: Finished difference Result 567 states and 831 transitions. [2021-12-18 00:40:49,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-18 00:40:49,564 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 120 [2021-12-18 00:40:49,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:40:49,578 INFO L225 Difference]: With dead ends: 567 [2021-12-18 00:40:49,578 INFO L226 Difference]: Without dead ends: 282 [2021-12-18 00:40:49,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 00:40:49,593 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 00:40:49,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 00:40:49,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-12-18 00:40:49,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-12-18 00:40:49,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 178 states have (on average 1.2303370786516854) internal successors, (219), 179 states have internal predecessors, (219), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2021-12-18 00:40:49,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 380 transitions. [2021-12-18 00:40:49,662 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 380 transitions. Word has length 120 [2021-12-18 00:40:49,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:40:49,662 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 380 transitions. [2021-12-18 00:40:49,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 00:40:49,663 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 380 transitions. [2021-12-18 00:40:49,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-18 00:40:49,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:40:49,669 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:40:49,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 00:40:49,875 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 [2021-12-18 00:40:49,876 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:40:49,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:40:49,876 INFO L85 PathProgramCache]: Analyzing trace with hash -262655291, now seen corresponding path program 1 times [2021-12-18 00:40:49,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:40:49,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216790499] [2021-12-18 00:40:49,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:40:49,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:40:49,938 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 00:40:49,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035933138] [2021-12-18 00:40:49,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:40:49,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:40:49,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:40:49,940 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) [2021-12-18 00:40:49,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 00:40:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:50,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 2441 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 00:40:50,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:40:50,679 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-18 00:40:50,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:40:50,939 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-12-18 00:40:50,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:40:50,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216790499] [2021-12-18 00:40:50,939 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 00:40:50,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035933138] [2021-12-18 00:40:50,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035933138] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-18 00:40:50,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:40:50,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2021-12-18 00:40:50,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18971537] [2021-12-18 00:40:50,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:40:50,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 00:40:50,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:40:50,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 00:40:50,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-18 00:40:50,942 INFO L87 Difference]: Start difference. First operand 282 states and 380 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-18 00:40:51,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:40:51,263 INFO L93 Difference]: Finished difference Result 512 states and 707 transitions. [2021-12-18 00:40:51,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 00:40:51,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 126 [2021-12-18 00:40:51,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:40:51,266 INFO L225 Difference]: With dead ends: 512 [2021-12-18 00:40:51,267 INFO L226 Difference]: Without dead ends: 299 [2021-12-18 00:40:51,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-12-18 00:40:51,268 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 407 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 00:40:51,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 2012 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 00:40:51,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-12-18 00:40:51,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2021-12-18 00:40:51,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 188 states have (on average 1.2287234042553192) internal successors, (231), 190 states have internal predecessors, (231), 86 states have call successors, (86), 23 states have call predecessors, (86), 24 states have return successors, (92), 85 states have call predecessors, (92), 85 states have call successors, (92) [2021-12-18 00:40:51,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 409 transitions. [2021-12-18 00:40:51,292 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 409 transitions. Word has length 126 [2021-12-18 00:40:51,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:40:51,294 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 409 transitions. [2021-12-18 00:40:51,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-18 00:40:51,295 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 409 transitions. [2021-12-18 00:40:51,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-18 00:40:51,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:40:51,298 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:40:51,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 00:40:51,511 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 [2021-12-18 00:40:51,511 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:40:51,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:40:51,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1695610635, now seen corresponding path program 1 times [2021-12-18 00:40:51,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:40:51,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921619143] [2021-12-18 00:40:51,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:40:51,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:40:51,566 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 00:40:51,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637200825] [2021-12-18 00:40:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:40:51,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:40:51,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:40:51,568 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) [2021-12-18 00:40:51,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 00:40:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:51,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 00:40:51,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:40:52,160 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-18 00:40:52,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:40:52,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:40:52,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921619143] [2021-12-18 00:40:52,160 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 00:40:52,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637200825] [2021-12-18 00:40:52,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637200825] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:40:52,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:40:52,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 00:40:52,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649437911] [2021-12-18 00:40:52,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:40:52,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 00:40:52,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:40:52,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 00:40:52,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 00:40:52,162 INFO L87 Difference]: Start difference. First operand 299 states and 409 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 00:40:52,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:40:52,190 INFO L93 Difference]: Finished difference Result 558 states and 771 transitions. [2021-12-18 00:40:52,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 00:40:52,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 127 [2021-12-18 00:40:52,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:40:52,192 INFO L225 Difference]: With dead ends: 558 [2021-12-18 00:40:52,192 INFO L226 Difference]: Without dead ends: 304 [2021-12-18 00:40:52,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 00:40:52,194 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 2 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1504 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 [2021-12-18 00:40:52,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1504 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 00:40:52,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-12-18 00:40:52,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-12-18 00:40:52,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 192 states have (on average 1.2239583333333333) internal successors, (235), 194 states have internal predecessors, (235), 86 states have call successors, (86), 23 states have call predecessors, (86), 25 states have return successors, (93), 86 states have call predecessors, (93), 85 states have call successors, (93) [2021-12-18 00:40:52,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 414 transitions. [2021-12-18 00:40:52,206 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 414 transitions. Word has length 127 [2021-12-18 00:40:52,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:40:52,206 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 414 transitions. [2021-12-18 00:40:52,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 00:40:52,207 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 414 transitions. [2021-12-18 00:40:52,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-18 00:40:52,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:40:52,208 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:40:52,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 00:40:52,423 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 [2021-12-18 00:40:52,424 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:40:52,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:40:52,424 INFO L85 PathProgramCache]: Analyzing trace with hash 818445258, now seen corresponding path program 1 times [2021-12-18 00:40:52,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:40:52,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405008134] [2021-12-18 00:40:52,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:40:52,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:40:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:40:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:40:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:40:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:40:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:40:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:40:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:40:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:40:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:40:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:40:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:40:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 00:40:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:40:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:40:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:40:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 00:40:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 00:40:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 00:40:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 00:40:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 00:40:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:52,911 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-18 00:40:52,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:40:52,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405008134] [2021-12-18 00:40:52,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405008134] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:40:52,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727790702] [2021-12-18 00:40:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:40:52,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:40:52,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:40:52,913 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) [2021-12-18 00:40:52,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 00:40:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:53,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 2450 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-18 00:40:53,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:40:53,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:40:53,908 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-18 00:40:53,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:40:53,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727790702] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:40:53,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:40:53,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2021-12-18 00:40:53,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510444968] [2021-12-18 00:40:53,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:40:53,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 00:40:53,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:40:53,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 00:40:53,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-12-18 00:40:53,909 INFO L87 Difference]: Start difference. First operand 304 states and 414 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-18 00:40:53,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:40:53,962 INFO L93 Difference]: Finished difference Result 556 states and 768 transitions. [2021-12-18 00:40:53,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 00:40:53,963 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 133 [2021-12-18 00:40:53,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:40:53,965 INFO L225 Difference]: With dead ends: 556 [2021-12-18 00:40:53,966 INFO L226 Difference]: Without dead ends: 313 [2021-12-18 00:40:53,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2021-12-18 00:40:53,967 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 11 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 00:40:53,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 2851 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 122 Unchecked, 0.0s Time] [2021-12-18 00:40:53,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-12-18 00:40:53,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-12-18 00:40:53,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 200 states have (on average 1.225) internal successors, (245), 202 states have internal predecessors, (245), 86 states have call successors, (86), 24 states have call predecessors, (86), 26 states have return successors, (94), 86 states have call predecessors, (94), 85 states have call successors, (94) [2021-12-18 00:40:53,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 425 transitions. [2021-12-18 00:40:53,988 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 425 transitions. Word has length 133 [2021-12-18 00:40:53,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:40:53,989 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 425 transitions. [2021-12-18 00:40:53,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-18 00:40:53,990 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 425 transitions. [2021-12-18 00:40:53,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-18 00:40:53,993 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:40:53,993 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:40:54,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 00:40:54,214 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 [2021-12-18 00:40:54,215 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:40:54,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:40:54,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1772385416, now seen corresponding path program 1 times [2021-12-18 00:40:54,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:40:54,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162096888] [2021-12-18 00:40:54,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:40:54,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:40:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:40:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:40:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:40:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:40:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:40:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:40:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:40:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:40:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:40:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:40:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:40:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 00:40:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:40:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:40:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:40:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 00:40:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 00:40:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 00:40:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 00:40:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 00:40:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,546 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-18 00:40:54,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:40:54,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162096888] [2021-12-18 00:40:54,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162096888] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:40:54,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899435325] [2021-12-18 00:40:54,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:40:54,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:40:54,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:40:54,548 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) [2021-12-18 00:40:54,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 00:40:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:54,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 2445 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 00:40:54,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:40:55,145 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-18 00:40:55,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:40:55,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899435325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:40:55,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:40:55,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2021-12-18 00:40:55,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531404769] [2021-12-18 00:40:55,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:40:55,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 00:40:55,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:40:55,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 00:40:55,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-12-18 00:40:55,147 INFO L87 Difference]: Start difference. First operand 313 states and 425 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-18 00:40:55,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:40:55,342 INFO L93 Difference]: Finished difference Result 560 states and 778 transitions. [2021-12-18 00:40:55,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 00:40:55,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 133 [2021-12-18 00:40:55,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:40:55,344 INFO L225 Difference]: With dead ends: 560 [2021-12-18 00:40:55,345 INFO L226 Difference]: Without dead ends: 315 [2021-12-18 00:40:55,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-12-18 00:40:55,346 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 413 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:40:55,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 925 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:40:55,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-18 00:40:55,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2021-12-18 00:40:55,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 201 states have (on average 1.2189054726368158) internal successors, (245), 203 states have internal predecessors, (245), 87 states have call successors, (87), 24 states have call predecessors, (87), 26 states have return successors, (98), 87 states have call predecessors, (98), 86 states have call successors, (98) [2021-12-18 00:40:55,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 430 transitions. [2021-12-18 00:40:55,366 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 430 transitions. Word has length 133 [2021-12-18 00:40:55,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:40:55,376 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 430 transitions. [2021-12-18 00:40:55,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-18 00:40:55,376 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 430 transitions. [2021-12-18 00:40:55,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-18 00:40:55,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:40:55,377 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:40:55,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-18 00:40:55,598 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 [2021-12-18 00:40:55,598 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:40:55,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:40:55,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1889144309, now seen corresponding path program 1 times [2021-12-18 00:40:55,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:40:55,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437030260] [2021-12-18 00:40:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:40:55,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:40:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:40:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:40:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:40:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:40:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:40:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:40:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:40:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:40:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:40:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:40:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:40:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 00:40:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 00:40:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:40:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 00:40:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 00:40:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-18 00:40:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 00:40:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 00:40:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 00:40:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 00:40:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-12-18 00:40:55,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:40:55,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437030260] [2021-12-18 00:40:55,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437030260] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:40:55,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013050186] [2021-12-18 00:40:55,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:40:55,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:40:55,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:40:55,912 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) [2021-12-18 00:40:55,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 00:40:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:40:56,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-18 00:40:56,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:40:57,225 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2021-12-18 00:41:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-18 00:41:03,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:41:03,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013050186] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:41:03,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:41:03,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2021-12-18 00:41:03,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322534218] [2021-12-18 00:41:03,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:41:03,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 00:41:03,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:41:03,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 00:41:03,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=202, Unknown=3, NotChecked=28, Total=272 [2021-12-18 00:41:03,090 INFO L87 Difference]: Start difference. First operand 315 states and 430 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-18 00:41:03,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:41:03,303 INFO L93 Difference]: Finished difference Result 567 states and 804 transitions. [2021-12-18 00:41:03,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 00:41:03,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 139 [2021-12-18 00:41:03,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:41:03,305 INFO L225 Difference]: With dead ends: 567 [2021-12-18 00:41:03,305 INFO L226 Difference]: Without dead ends: 318 [2021-12-18 00:41:03,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=54, Invalid=253, Unknown=3, NotChecked=32, Total=342 [2021-12-18 00:41:03,307 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 5 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 512 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:41:03,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 2087 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 512 Unchecked, 0.1s Time] [2021-12-18 00:41:03,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-12-18 00:41:03,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2021-12-18 00:41:03,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 203 states have (on average 1.2167487684729064) internal successors, (247), 204 states have internal predecessors, (247), 87 states have call successors, (87), 25 states have call predecessors, (87), 26 states have return successors, (98), 87 states have call predecessors, (98), 86 states have call successors, (98) [2021-12-18 00:41:03,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 432 transitions. [2021-12-18 00:41:03,327 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 432 transitions. Word has length 139 [2021-12-18 00:41:03,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:41:03,327 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 432 transitions. [2021-12-18 00:41:03,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-18 00:41:03,328 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 432 transitions. [2021-12-18 00:41:03,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-18 00:41:03,328 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:41:03,333 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:41:03,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 00:41:03,539 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 [2021-12-18 00:41:03,539 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:41:03,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:41:03,540 INFO L85 PathProgramCache]: Analyzing trace with hash -817837060, now seen corresponding path program 1 times [2021-12-18 00:41:03,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:41:03,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349209646] [2021-12-18 00:41:03,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:41:03,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:41:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:03,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:41:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:03,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:41:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:03,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:41:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:03,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:41:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:03,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:41:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:03,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:41:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:03,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:41:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:03,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:41:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:03,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:41:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:03,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:41:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:03,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:41:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:03,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 00:41:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:03,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 00:41:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:03,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:41:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:03,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 00:41:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:03,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 00:41:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:03,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 00:41:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:04,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:41:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:04,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 00:41:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:04,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 00:41:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:04,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:41:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:04,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-18 00:41:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-18 00:41:04,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:41:04,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349209646] [2021-12-18 00:41:04,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349209646] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:41:04,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:41:04,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-18 00:41:04,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203384103] [2021-12-18 00:41:04,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:41:04,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-18 00:41:04,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:41:04,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-18 00:41:04,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-12-18 00:41:04,137 INFO L87 Difference]: Start difference. First operand 317 states and 432 transitions. Second operand has 18 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-12-18 00:41:06,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:41:06,519 INFO L93 Difference]: Finished difference Result 573 states and 800 transitions. [2021-12-18 00:41:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-18 00:41:06,520 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 144 [2021-12-18 00:41:06,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:41:06,521 INFO L225 Difference]: With dead ends: 573 [2021-12-18 00:41:06,522 INFO L226 Difference]: Without dead ends: 345 [2021-12-18 00:41:06,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2021-12-18 00:41:06,523 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 602 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 3102 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 3102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-18 00:41:06,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 2114 Invalid, 3627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 3102 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-18 00:41:06,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-18 00:41:06,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 326. [2021-12-18 00:41:06,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 209 states have (on average 1.2200956937799043) internal successors, (255), 211 states have internal predecessors, (255), 89 states have call successors, (89), 25 states have call predecessors, (89), 27 states have return successors, (109), 89 states have call predecessors, (109), 88 states have call successors, (109) [2021-12-18 00:41:06,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 453 transitions. [2021-12-18 00:41:06,539 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 453 transitions. Word has length 144 [2021-12-18 00:41:06,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:41:06,539 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 453 transitions. [2021-12-18 00:41:06,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-12-18 00:41:06,540 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 453 transitions. [2021-12-18 00:41:06,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-18 00:41:06,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:41:06,541 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:41:06,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 00:41:06,541 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:41:06,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:41:06,542 INFO L85 PathProgramCache]: Analyzing trace with hash -951850566, now seen corresponding path program 1 times [2021-12-18 00:41:06,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:41:06,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696204328] [2021-12-18 00:41:06,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:41:06,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:41:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:41:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:41:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:41:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:41:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:41:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:41:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:41:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:41:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:41:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:41:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:41:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 00:41:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 00:41:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:41:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 00:41:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 00:41:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 00:41:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:41:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 00:41:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 00:41:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:41:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-18 00:41:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:06,915 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-18 00:41:06,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:41:06,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696204328] [2021-12-18 00:41:06,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696204328] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:41:06,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:41:06,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-18 00:41:06,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566715015] [2021-12-18 00:41:06,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:41:06,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-18 00:41:06,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:41:06,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-18 00:41:06,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-18 00:41:06,918 INFO L87 Difference]: Start difference. First operand 326 states and 453 transitions. Second operand has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 9 states have internal predecessors, (70), 7 states have call successors, (24), 7 states have call predecessors, (24), 2 states have return successors, (22), 5 states have call predecessors, (22), 6 states have call successors, (22) [2021-12-18 00:41:08,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:41:08,495 INFO L93 Difference]: Finished difference Result 589 states and 831 transitions. [2021-12-18 00:41:08,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 00:41:08,495 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 9 states have internal predecessors, (70), 7 states have call successors, (24), 7 states have call predecessors, (24), 2 states have return successors, (22), 5 states have call predecessors, (22), 6 states have call successors, (22) Word has length 144 [2021-12-18 00:41:08,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:41:08,498 INFO L225 Difference]: With dead ends: 589 [2021-12-18 00:41:08,498 INFO L226 Difference]: Without dead ends: 334 [2021-12-18 00:41:08,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2021-12-18 00:41:08,500 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 336 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 2269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-18 00:41:08,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 1679 Invalid, 2269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 2040 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-18 00:41:08,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-12-18 00:41:08,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 319. [2021-12-18 00:41:08,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 204 states have (on average 1.2156862745098038) internal successors, (248), 206 states have internal predecessors, (248), 87 states have call successors, (87), 25 states have call predecessors, (87), 27 states have return successors, (104), 87 states have call predecessors, (104), 86 states have call successors, (104) [2021-12-18 00:41:08,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 439 transitions. [2021-12-18 00:41:08,515 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 439 transitions. Word has length 144 [2021-12-18 00:41:08,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:41:08,518 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 439 transitions. [2021-12-18 00:41:08,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 9 states have internal predecessors, (70), 7 states have call successors, (24), 7 states have call predecessors, (24), 2 states have return successors, (22), 5 states have call predecessors, (22), 6 states have call successors, (22) [2021-12-18 00:41:08,518 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 439 transitions. [2021-12-18 00:41:08,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-18 00:41:08,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:41:08,521 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:41:08,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 00:41:08,522 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:41:08,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:41:08,522 INFO L85 PathProgramCache]: Analyzing trace with hash 2132172247, now seen corresponding path program 1 times [2021-12-18 00:41:08,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:41:08,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058574866] [2021-12-18 00:41:08,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:41:08,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:41:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:41:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:41:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:41:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:41:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:41:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:41:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:41:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:41:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:41:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:41:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:41:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 00:41:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 00:41:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:41:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 00:41:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 00:41:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 00:41:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:41:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 00:41:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:41:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:08,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:41:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:09,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:41:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:09,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 00:41:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:09,070 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-18 00:41:09,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:41:09,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058574866] [2021-12-18 00:41:09,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058574866] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:41:09,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:41:09,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-18 00:41:09,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996471395] [2021-12-18 00:41:09,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:41:09,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-18 00:41:09,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:41:09,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-18 00:41:09,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-12-18 00:41:09,072 INFO L87 Difference]: Start difference. First operand 319 states and 439 transitions. Second operand has 19 states, 16 states have (on average 4.5625) internal successors, (73), 14 states have internal predecessors, (73), 9 states have call successors, (24), 6 states have call predecessors, (24), 4 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) [2021-12-18 00:41:11,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:41:11,740 INFO L93 Difference]: Finished difference Result 570 states and 799 transitions. [2021-12-18 00:41:11,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-18 00:41:11,741 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 4.5625) internal successors, (73), 14 states have internal predecessors, (73), 9 states have call successors, (24), 6 states have call predecessors, (24), 4 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) Word has length 148 [2021-12-18 00:41:11,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:41:11,743 INFO L225 Difference]: With dead ends: 570 [2021-12-18 00:41:11,743 INFO L226 Difference]: Without dead ends: 345 [2021-12-18 00:41:11,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190 [2021-12-18 00:41:11,745 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 571 mSDsluCounter, 1797 mSDsCounter, 0 mSdLazyCounter, 3425 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 3903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 3425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-18 00:41:11,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [591 Valid, 2101 Invalid, 3903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 3425 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-18 00:41:11,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-18 00:41:11,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 317. [2021-12-18 00:41:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 203 states have (on average 1.2167487684729064) internal successors, (247), 204 states have internal predecessors, (247), 87 states have call successors, (87), 25 states have call predecessors, (87), 26 states have return successors, (96), 87 states have call predecessors, (96), 86 states have call successors, (96) [2021-12-18 00:41:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 430 transitions. [2021-12-18 00:41:11,757 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 430 transitions. Word has length 148 [2021-12-18 00:41:11,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:41:11,758 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 430 transitions. [2021-12-18 00:41:11,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 4.5625) internal successors, (73), 14 states have internal predecessors, (73), 9 states have call successors, (24), 6 states have call predecessors, (24), 4 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) [2021-12-18 00:41:11,758 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 430 transitions. [2021-12-18 00:41:11,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-18 00:41:11,759 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:41:11,759 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 3, 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] [2021-12-18 00:41:11,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 00:41:11,760 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:41:11,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:41:11,760 INFO L85 PathProgramCache]: Analyzing trace with hash -737363795, now seen corresponding path program 1 times [2021-12-18 00:41:11,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:41:11,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310329551] [2021-12-18 00:41:11,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:41:11,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:41:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:11,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:41:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:11,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:41:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:11,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:41:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:11,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:41:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:11,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:41:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:41:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:41:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:41:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:41:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:41:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:41:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 00:41:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 00:41:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:41:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 00:41:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 00:41:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 00:41:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:41:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 00:41:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 00:41:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:41:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-18 00:41:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:41:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-12-18 00:41:12,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:41:12,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310329551] [2021-12-18 00:41:12,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310329551] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:41:12,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997594917] [2021-12-18 00:41:12,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:41:12,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:41:12,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:41:12,408 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) [2021-12-18 00:41:12,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 00:41:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:12,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-18 00:41:12,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:41:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-18 00:41:13,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:41:13,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997594917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:41:13,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:41:13,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19] total 24 [2021-12-18 00:41:13,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665274703] [2021-12-18 00:41:13,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:41:13,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 00:41:13,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:41:13,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 00:41:13,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2021-12-18 00:41:13,098 INFO L87 Difference]: Start difference. First operand 317 states and 430 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, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-18 00:41:13,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:41:13,250 INFO L93 Difference]: Finished difference Result 569 states and 787 transitions. [2021-12-18 00:41:13,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 00:41:13,250 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, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 153 [2021-12-18 00:41:13,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:41:13,252 INFO L225 Difference]: With dead ends: 569 [2021-12-18 00:41:13,252 INFO L226 Difference]: Without dead ends: 323 [2021-12-18 00:41:13,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2021-12-18 00:41:13,254 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 2 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:41:13,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2091 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:41:13,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-12-18 00:41:13,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 320. [2021-12-18 00:41:13,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 205 states have (on average 1.2146341463414634) internal successors, (249), 207 states have internal predecessors, (249), 87 states have call successors, (87), 25 states have call predecessors, (87), 27 states have return successors, (100), 87 states have call predecessors, (100), 86 states have call successors, (100) [2021-12-18 00:41:13,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 436 transitions. [2021-12-18 00:41:13,266 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 436 transitions. Word has length 153 [2021-12-18 00:41:13,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:41:13,267 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 436 transitions. [2021-12-18 00:41:13,267 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, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-18 00:41:13,267 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 436 transitions. [2021-12-18 00:41:13,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-18 00:41:13,269 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:41:13,269 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 3, 3, 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] [2021-12-18 00:41:13,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-18 00:41:13,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:41:13,483 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:41:13,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:41:13,484 INFO L85 PathProgramCache]: Analyzing trace with hash 538022179, now seen corresponding path program 2 times [2021-12-18 00:41:13,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:41:13,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975109212] [2021-12-18 00:41:13,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:41:13,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:41:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:13,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:41:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:13,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:41:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:13,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:41:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:13,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:41:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:13,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:41:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:13,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:41:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:13,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:41:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:13,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:41:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:13,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:41:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:13,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:41:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:13,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:41:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:13,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 00:41:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:14,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 00:41:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:14,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:41:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:14,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 00:41:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:14,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 00:41:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:14,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 00:41:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:14,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:41:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:14,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 00:41:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:14,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 00:41:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:14,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 00:41:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:14,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 00:41:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:14,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 00:41:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:14,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 00:41:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:14,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:41:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-18 00:41:14,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:41:14,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975109212] [2021-12-18 00:41:14,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975109212] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:41:14,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473933652] [2021-12-18 00:41:14,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 00:41:14,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:41:14,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:41:14,314 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) [2021-12-18 00:41:14,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-18 00:41:15,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 00:41:15,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:41:15,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 2585 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-18 00:41:15,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:41:15,517 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-12-18 00:41:15,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:41:15,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473933652] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:41:15,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:41:15,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [25] total 30 [2021-12-18 00:41:15,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380932395] [2021-12-18 00:41:15,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:41:15,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 00:41:15,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:41:15,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 00:41:15,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2021-12-18 00:41:15,518 INFO L87 Difference]: Start difference. First operand 320 states and 436 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-18 00:41:15,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:41:15,654 INFO L93 Difference]: Finished difference Result 562 states and 779 transitions. [2021-12-18 00:41:15,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 00:41:15,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 164 [2021-12-18 00:41:15,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:41:15,656 INFO L225 Difference]: With dead ends: 562 [2021-12-18 00:41:15,656 INFO L226 Difference]: Without dead ends: 323 [2021-12-18 00:41:15,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=861, Unknown=0, NotChecked=0, Total=930 [2021-12-18 00:41:15,658 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 2 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:41:15,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2092 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:41:15,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-12-18 00:41:15,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-12-18 00:41:15,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 207 states have (on average 1.21256038647343) internal successors, (251), 210 states have internal predecessors, (251), 87 states have call successors, (87), 25 states have call predecessors, (87), 28 states have return successors, (99), 87 states have call predecessors, (99), 86 states have call successors, (99) [2021-12-18 00:41:15,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 437 transitions. [2021-12-18 00:41:15,670 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 437 transitions. Word has length 164 [2021-12-18 00:41:15,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:41:15,670 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 437 transitions. [2021-12-18 00:41:15,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-18 00:41:15,671 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 437 transitions. [2021-12-18 00:41:15,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-18 00:41:15,672 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:41:15,672 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:41:15,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-18 00:41:15,893 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,SelfDestructingSolverStorable10 [2021-12-18 00:41:15,893 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:41:15,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:41:15,894 INFO L85 PathProgramCache]: Analyzing trace with hash -2001607967, now seen corresponding path program 3 times [2021-12-18 00:41:15,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:41:15,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127529554] [2021-12-18 00:41:15,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:41:15,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:41:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:41:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:41:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:41:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:41:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:41:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:41:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:41:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:41:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:41:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:41:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:41:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 00:41:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 00:41:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:41:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 00:41:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 00:41:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 00:41:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:41:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 00:41:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 00:41:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 00:41:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 00:41:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 00:41:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:41:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 00:41:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 00:41:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:41:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:41:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-12-18 00:41:16,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:41:16,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127529554] [2021-12-18 00:41:16,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127529554] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:41:16,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347527817] [2021-12-18 00:41:16,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 00:41:16,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:41:16,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:41:16,869 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) [2021-12-18 00:41:16,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-18 00:41:17,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-18 00:41:17,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:41:17,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 2062 conjuncts, 137 conjunts are in the unsatisfiable core [2021-12-18 00:41:18,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:41:18,297 INFO L354 Elim1Store]: treesize reduction 62, result has 36.1 percent of original size [2021-12-18 00:41:18,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 95 [2021-12-18 00:41:18,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:41:18,330 INFO L354 Elim1Store]: treesize reduction 44, result has 35.3 percent of original size [2021-12-18 00:41:18,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 69 [2021-12-18 00:41:18,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:41:18,361 INFO L354 Elim1Store]: treesize reduction 64, result has 36.0 percent of original size [2021-12-18 00:41:18,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 87 [2021-12-18 00:41:18,382 INFO L354 Elim1Store]: treesize reduction 50, result has 33.3 percent of original size [2021-12-18 00:41:18,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 47 [2021-12-18 00:41:18,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:41:18,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2021-12-18 00:41:18,758 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-18 00:41:18,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2021-12-18 00:41:18,800 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-18 00:41:18,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-12-18 00:41:21,900 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_9 Int) (v_arrayElimCell_3 Int) (v_arrayElimCell_2 Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_9) 0))) (let ((.cse1 (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_9) 0)) (.cse4 (= .cse0 v_s_get_next_element_~iter.base_BEFORE_CALL_9))) (let ((.cse2 (and (= .cse1 32) .cse4)) (.cse3 (and (= .cse1 0) .cse4))) (and (or (= (select (select |c_#memory_$Pointer$.base| .cse0) .cse1) v_arrayElimCell_3) .cse2 .cse3) (= (select (select |c_#memory_int| v_s_get_next_element_~iter.base_BEFORE_CALL_9) 32) (select (select |c_#memory_int| v_arrayElimCell_3) (+ v_arrayElimCell_2 40))) (or (= (select (select |c_#memory_$Pointer$.offset| .cse0) .cse1) v_arrayElimCell_2) .cse2 .cse3)))))) is different from true [2021-12-18 00:42:14,833 WARN L227 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 66 DAG size of output: 63 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 00:42:25,607 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_11 Int) (v_arrayElimCell_12 Int) (v_arrayElimCell_11 Int)) (let ((.cse6 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_11) 0))) (let ((.cse4 (= .cse6 v_s_get_next_element_~iter.base_BEFORE_CALL_11)) (.cse5 (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_11) 0))) (let ((.cse1 (select (select |c_#memory_$Pointer$.offset| .cse6) .cse5)) (.cse2 (and .cse4 (= .cse5 0))) (.cse0 (select (select |c_#memory_$Pointer$.base| .cse6) .cse5)) (.cse3 (and .cse4 (= .cse5 32)))) (and (or (not (= .cse0 0)) (not (= .cse1 0))) (or .cse2 (= .cse1 v_arrayElimCell_12) .cse3) (or .cse2 (= .cse0 v_arrayElimCell_11) .cse3) (= (select (select |c_#memory_int| v_s_get_next_element_~iter.base_BEFORE_CALL_11) 32) (select (select |c_#memory_int| v_arrayElimCell_11) (+ v_arrayElimCell_12 40)))))))) is different from true [2021-12-18 00:42:32,035 INFO L354 Elim1Store]: treesize reduction 22, result has 77.3 percent of original size [2021-12-18 00:42:32,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 86 [2021-12-18 00:42:33,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,831 INFO L354 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2021-12-18 00:42:33,832 INFO L388 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 130 treesize of output 119 [2021-12-18 00:42:33,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:42:33,863 INFO L354 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2021-12-18 00:42:33,863 INFO L388 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 130 treesize of output 119 [2021-12-18 00:42:48,262 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 103 proven. 5 refuted. 0 times theorem prover too weak. 84 trivial. 4 not checked. [2021-12-18 00:42:48,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:43:04,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347527817] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:43:04,847 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:43:04,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 38] total 65 [2021-12-18 00:43:04,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496670782] [2021-12-18 00:43:04,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:43:04,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-12-18 00:43:04,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:43:04,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-12-18 00:43:04,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=5367, Unknown=19, NotChecked=298, Total=6006 [2021-12-18 00:43:04,850 INFO L87 Difference]: Start difference. First operand 323 states and 437 transitions. Second operand has 65 states, 56 states have (on average 2.375) internal successors, (133), 50 states have internal predecessors, (133), 22 states have call successors, (49), 14 states have call predecessors, (49), 14 states have return successors, (43), 17 states have call predecessors, (43), 19 states have call successors, (43) [2021-12-18 00:43:55,528 WARN L227 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 118 DAG size of output: 102 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 00:44:18,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:44:18,922 INFO L93 Difference]: Finished difference Result 766 states and 1083 transitions. [2021-12-18 00:44:18,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-12-18 00:44:18,923 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 56 states have (on average 2.375) internal successors, (133), 50 states have internal predecessors, (133), 22 states have call successors, (49), 14 states have call predecessors, (49), 14 states have return successors, (43), 17 states have call predecessors, (43), 19 states have call successors, (43) Word has length 175 [2021-12-18 00:44:18,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:44:18,925 INFO L225 Difference]: With dead ends: 766 [2021-12-18 00:44:18,926 INFO L226 Difference]: Without dead ends: 516 [2021-12-18 00:44:18,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 203 SyntacticMatches, 4 SemanticMatches, 128 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3869 ImplicationChecksByTransitivity, 158.9s TimeCoverageRelationStatistics Valid=1132, Invalid=15095, Unknown=37, NotChecked=506, Total=16770 [2021-12-18 00:44:18,930 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 431 mSDsluCounter, 7233 mSDsCounter, 0 mSdLazyCounter, 8414 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 7703 SdHoareTripleChecker+Invalid, 13398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 8414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4728 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-12-18 00:44:18,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 7703 Invalid, 13398 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [256 Valid, 8414 Invalid, 0 Unknown, 4728 Unchecked, 7.0s Time] [2021-12-18 00:44:18,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-12-18 00:44:18,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 405. [2021-12-18 00:44:18,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 268 states have (on average 1.2201492537313432) internal successors, (327), 273 states have internal predecessors, (327), 98 states have call successors, (98), 33 states have call predecessors, (98), 38 states have return successors, (123), 98 states have call predecessors, (123), 97 states have call successors, (123) [2021-12-18 00:44:18,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 548 transitions. [2021-12-18 00:44:18,949 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 548 transitions. Word has length 175 [2021-12-18 00:44:18,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:44:18,950 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 548 transitions. [2021-12-18 00:44:18,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 56 states have (on average 2.375) internal successors, (133), 50 states have internal predecessors, (133), 22 states have call successors, (49), 14 states have call predecessors, (49), 14 states have return successors, (43), 17 states have call predecessors, (43), 19 states have call successors, (43) [2021-12-18 00:44:18,950 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 548 transitions. [2021-12-18 00:44:18,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-18 00:44:18,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:44:18,952 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:44:18,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-18 00:44:19,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:44:19,167 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:44:19,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:44:19,168 INFO L85 PathProgramCache]: Analyzing trace with hash 539676297, now seen corresponding path program 1 times [2021-12-18 00:44:19,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:44:19,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571052662] [2021-12-18 00:44:19,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:44:19,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:44:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:44:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:44:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:44:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:44:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:44:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:44:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:44:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:44:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:44:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:44:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:44:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 00:44:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 00:44:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:44:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 00:44:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 00:44:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 00:44:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:44:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 00:44:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 00:44:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 00:44:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 00:44:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 00:44:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:44:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 00:44:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 00:44:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:44:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 28 proven. 5 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-12-18 00:44:19,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:44:19,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571052662] [2021-12-18 00:44:19,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571052662] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:44:19,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122752307] [2021-12-18 00:44:19,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:44:19,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:44:19,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:44:19,989 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) [2021-12-18 00:44:19,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-18 00:44:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:20,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 2658 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-18 00:44:20,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:44:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-12-18 00:44:20,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:44:20,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122752307] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:44:20,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:44:20,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [25] total 29 [2021-12-18 00:44:20,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439234949] [2021-12-18 00:44:20,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:44:20,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 00:44:20,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:44:20,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 00:44:20,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=750, Unknown=0, NotChecked=0, Total=812 [2021-12-18 00:44:20,790 INFO L87 Difference]: Start difference. First operand 405 states and 548 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-18 00:44:20,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:44:20,957 INFO L93 Difference]: Finished difference Result 760 states and 1038 transitions. [2021-12-18 00:44:20,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 00:44:20,958 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 176 [2021-12-18 00:44:20,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:44:20,960 INFO L225 Difference]: With dead ends: 760 [2021-12-18 00:44:20,960 INFO L226 Difference]: Without dead ends: 405 [2021-12-18 00:44:20,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=804, Unknown=0, NotChecked=0, Total=870 [2021-12-18 00:44:20,962 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 2 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:44:20,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1727 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:44:20,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-12-18 00:44:20,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 400. [2021-12-18 00:44:20,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 264 states have (on average 1.2159090909090908) internal successors, (321), 269 states have internal predecessors, (321), 98 states have call successors, (98), 33 states have call predecessors, (98), 37 states have return successors, (122), 97 states have call predecessors, (122), 97 states have call successors, (122) [2021-12-18 00:44:20,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 541 transitions. [2021-12-18 00:44:20,981 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 541 transitions. Word has length 176 [2021-12-18 00:44:20,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:44:20,981 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 541 transitions. [2021-12-18 00:44:20,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-18 00:44:20,981 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 541 transitions. [2021-12-18 00:44:20,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-18 00:44:20,982 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:44:20,983 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:44:21,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-18 00:44:21,195 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,SelfDestructingSolverStorable12 [2021-12-18 00:44:21,196 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:44:21,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:44:21,196 INFO L85 PathProgramCache]: Analyzing trace with hash 400215387, now seen corresponding path program 1 times [2021-12-18 00:44:21,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:44:21,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477301769] [2021-12-18 00:44:21,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:44:21,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:44:21,236 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 00:44:21,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587927393] [2021-12-18 00:44:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:44:21,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:44:21,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:44:21,238 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) [2021-12-18 00:44:21,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-18 00:44:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:21,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 2763 conjuncts, 84 conjunts are in the unsatisfiable core [2021-12-18 00:44:21,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:44:21,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:21,985 INFO L388 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 [2021-12-18 00:44:24,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,062 INFO L354 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2021-12-18 00:44:24,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 11 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 [2021-12-18 00:44:24,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:24,079 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 00:44:24,080 INFO L388 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 70 treesize of output 79 [2021-12-18 00:44:24,816 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 106 proven. 6 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-18 00:44:24,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:44:29,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:44:29,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477301769] [2021-12-18 00:44:29,653 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 00:44:29,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587927393] [2021-12-18 00:44:29,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587927393] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:44:29,653 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:44:29,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-12-18 00:44:29,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703583093] [2021-12-18 00:44:29,653 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 00:44:29,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-18 00:44:29,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:44:29,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-18 00:44:29,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2021-12-18 00:44:29,655 INFO L87 Difference]: Start difference. First operand 400 states and 541 transitions. Second operand has 24 states, 21 states have (on average 4.476190476190476) internal successors, (94), 23 states have internal predecessors, (94), 12 states have call successors, (28), 6 states have call predecessors, (28), 7 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2021-12-18 00:44:30,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:44:30,377 INFO L93 Difference]: Finished difference Result 691 states and 946 transitions. [2021-12-18 00:44:30,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-18 00:44:30,377 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 4.476190476190476) internal successors, (94), 23 states have internal predecessors, (94), 12 states have call successors, (28), 6 states have call predecessors, (28), 7 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 182 [2021-12-18 00:44:30,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:44:30,380 INFO L225 Difference]: With dead ends: 691 [2021-12-18 00:44:30,380 INFO L226 Difference]: Without dead ends: 438 [2021-12-18 00:44:30,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 167 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=168, Invalid=1314, Unknown=0, NotChecked=0, Total=1482 [2021-12-18 00:44:30,381 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 163 mSDsluCounter, 3628 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 4015 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 315 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 00:44:30,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 4015 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 176 Invalid, 0 Unknown, 315 Unchecked, 0.4s Time] [2021-12-18 00:44:30,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-12-18 00:44:30,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2021-12-18 00:44:30,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 293 states have (on average 1.21160409556314) internal successors, (355), 297 states have internal predecessors, (355), 101 states have call successors, (101), 40 states have call predecessors, (101), 43 states have return successors, (128), 100 states have call predecessors, (128), 100 states have call successors, (128) [2021-12-18 00:44:30,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 584 transitions. [2021-12-18 00:44:30,402 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 584 transitions. Word has length 182 [2021-12-18 00:44:30,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:44:30,402 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 584 transitions. [2021-12-18 00:44:30,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 4.476190476190476) internal successors, (94), 23 states have internal predecessors, (94), 12 states have call successors, (28), 6 states have call predecessors, (28), 7 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2021-12-18 00:44:30,402 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 584 transitions. [2021-12-18 00:44:30,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-12-18 00:44:30,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:44:30,404 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:44:30,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-18 00:44:30,615 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,SelfDestructingSolverStorable13 [2021-12-18 00:44:30,615 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:44:30,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:44:30,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1484534063, now seen corresponding path program 1 times [2021-12-18 00:44:30,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:44:30,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158166040] [2021-12-18 00:44:30,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:44:30,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:44:30,656 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 00:44:30,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168811843] [2021-12-18 00:44:30,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:44:30,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:44:30,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:44:30,660 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) [2021-12-18 00:44:30,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-18 00:44:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:31,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 2739 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-18 00:44:31,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:44:32,498 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 [2021-12-18 00:44:38,725 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-18 00:44:38,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:44:38,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:44:38,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158166040] [2021-12-18 00:44:38,726 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 00:44:38,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168811843] [2021-12-18 00:44:38,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168811843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:44:38,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:44:38,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 00:44:38,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607557526] [2021-12-18 00:44:38,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:44:38,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 00:44:38,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:44:38,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 00:44:38,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2021-12-18 00:44:38,728 INFO L87 Difference]: Start difference. First operand 438 states and 584 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-18 00:44:38,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:44:38,895 INFO L93 Difference]: Finished difference Result 701 states and 969 transitions. [2021-12-18 00:44:38,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 00:44:38,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 181 [2021-12-18 00:44:38,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:44:38,898 INFO L225 Difference]: With dead ends: 701 [2021-12-18 00:44:38,899 INFO L226 Difference]: Without dead ends: 439 [2021-12-18 00:44:38,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2021-12-18 00:44:38,900 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 0 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 503 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:44:38,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1745 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 503 Unchecked, 0.1s Time] [2021-12-18 00:44:38,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-12-18 00:44:38,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 435. [2021-12-18 00:44:38,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 291 states have (on average 1.2061855670103092) internal successors, (351), 294 states have internal predecessors, (351), 101 states have call successors, (101), 40 states have call predecessors, (101), 42 states have return successors, (126), 100 states have call predecessors, (126), 100 states have call successors, (126) [2021-12-18 00:44:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 578 transitions. [2021-12-18 00:44:38,935 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 578 transitions. Word has length 181 [2021-12-18 00:44:38,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:44:38,935 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 578 transitions. [2021-12-18 00:44:38,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-18 00:44:38,936 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 578 transitions. [2021-12-18 00:44:38,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-18 00:44:38,937 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:44:38,937 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:44:38,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-18 00:44:39,160 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,SelfDestructingSolverStorable14 [2021-12-18 00:44:39,160 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:44:39,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:44:39,160 INFO L85 PathProgramCache]: Analyzing trace with hash -510431116, now seen corresponding path program 1 times [2021-12-18 00:44:39,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:44:39,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859223090] [2021-12-18 00:44:39,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:44:39,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:44:39,200 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 00:44:39,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95892120] [2021-12-18 00:44:39,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:44:39,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:44:39,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:44:39,202 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) [2021-12-18 00:44:39,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-18 00:44:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:39,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 88 conjunts are in the unsatisfiable core [2021-12-18 00:44:39,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:44:39,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:39,920 INFO L388 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 [2021-12-18 00:44:42,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,040 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 00:44:42,040 INFO L388 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 70 treesize of output 79 [2021-12-18 00:44:42,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:42,070 INFO L354 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2021-12-18 00:44:42,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 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 [2021-12-18 00:44:43,752 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 106 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-18 00:44:43,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:44:44,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:44:44,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859223090] [2021-12-18 00:44:44,557 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 00:44:44,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95892120] [2021-12-18 00:44:44,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95892120] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:44:44,557 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:44:44,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-12-18 00:44:44,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903143043] [2021-12-18 00:44:44,557 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 00:44:44,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-18 00:44:44,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:44:44,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-18 00:44:44,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=984, Unknown=1, NotChecked=0, Total=1122 [2021-12-18 00:44:44,559 INFO L87 Difference]: Start difference. First operand 435 states and 578 transitions. Second operand has 25 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 23 states have internal predecessors, (94), 12 states have call successors, (28), 6 states have call predecessors, (28), 7 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2021-12-18 00:44:46,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:44:46,287 INFO L93 Difference]: Finished difference Result 707 states and 970 transitions. [2021-12-18 00:44:46,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-18 00:44:46,287 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 23 states have internal predecessors, (94), 12 states have call successors, (28), 6 states have call predecessors, (28), 7 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 182 [2021-12-18 00:44:46,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:44:46,289 INFO L225 Difference]: With dead ends: 707 [2021-12-18 00:44:46,289 INFO L226 Difference]: Without dead ends: 445 [2021-12-18 00:44:46,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 167 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=185, Invalid=1453, Unknown=2, NotChecked=0, Total=1640 [2021-12-18 00:44:46,291 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 173 mSDsluCounter, 4620 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 5004 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 318 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 00:44:46,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 5004 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 165 Invalid, 0 Unknown, 318 Unchecked, 0.4s Time] [2021-12-18 00:44:46,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-12-18 00:44:46,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2021-12-18 00:44:46,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 301 states have (on average 1.1993355481727574) internal successors, (361), 304 states have internal predecessors, (361), 101 states have call successors, (101), 40 states have call predecessors, (101), 42 states have return successors, (126), 100 states have call predecessors, (126), 100 states have call successors, (126) [2021-12-18 00:44:46,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 588 transitions. [2021-12-18 00:44:46,310 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 588 transitions. Word has length 182 [2021-12-18 00:44:46,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:44:46,311 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 588 transitions. [2021-12-18 00:44:46,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 23 states have internal predecessors, (94), 12 states have call successors, (28), 6 states have call predecessors, (28), 7 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2021-12-18 00:44:46,311 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 588 transitions. [2021-12-18 00:44:46,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-12-18 00:44:46,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:44:46,312 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:44:46,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-18 00:44:46,527 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,SelfDestructingSolverStorable15 [2021-12-18 00:44:46,527 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:44:46,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:44:46,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1048548953, now seen corresponding path program 1 times [2021-12-18 00:44:46,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:44:46,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965437330] [2021-12-18 00:44:46,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:44:46,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:44:46,568 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 00:44:46,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790490404] [2021-12-18 00:44:46,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:44:46,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:44:46,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:44:46,570 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) [2021-12-18 00:44:46,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-18 00:44:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:44:47,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 2798 conjuncts, 214 conjunts are in the unsatisfiable core [2021-12-18 00:44:47,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:44:47,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-18 00:44:47,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:44:47,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:44:47,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:44:49,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:49,309 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 00:44:49,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 92 [2021-12-18 00:44:49,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:49,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:49,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:49,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 77 [2021-12-18 00:44:49,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:49,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 37 [2021-12-18 00:44:50,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2021-12-18 00:44:50,418 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 00:44:50,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2021-12-18 00:44:50,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:50,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:44:50,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2021-12-18 00:44:50,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2021-12-18 00:44:52,126 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_24 Int) (|ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base|) 40))) (and (<= 2 (mod .cse0 18446744073709551616)) (< (+ |ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base| 1) v_s_get_next_element_~iter.base_BEFORE_CALL_24) (= (select (select |c_#memory_int| v_s_get_next_element_~iter.base_BEFORE_CALL_24) 32) .cse0)))) is different from true [2021-12-18 00:45:09,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:45:09,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 12 [2021-12-18 00:45:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 137 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 15 not checked. [2021-12-18 00:45:09,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:45:10,077 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4346 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base| v_ArrVal_4346) |c_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base|) (+ |c_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.offset| 40)) 18446744073709551616))) is different from false [2021-12-18 00:45:10,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:45:10,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965437330] [2021-12-18 00:45:10,102 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 00:45:10,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790490404] [2021-12-18 00:45:10,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790490404] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:45:10,102 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:45:10,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2021-12-18 00:45:10,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682025037] [2021-12-18 00:45:10,102 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 00:45:10,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-18 00:45:10,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:45:10,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-18 00:45:10,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1368, Unknown=5, NotChecked=150, Total=1640 [2021-12-18 00:45:10,104 INFO L87 Difference]: Start difference. First operand 445 states and 588 transitions. Second operand has 36 states, 31 states have (on average 4.0) internal successors, (124), 30 states have internal predecessors, (124), 15 states have call successors, (32), 8 states have call predecessors, (32), 13 states have return successors, (30), 14 states have call predecessors, (30), 14 states have call successors, (30) [2021-12-18 00:45:32,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:45:32,137 INFO L93 Difference]: Finished difference Result 771 states and 1022 transitions. [2021-12-18 00:45:32,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-12-18 00:45:32,138 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 31 states have (on average 4.0) internal successors, (124), 30 states have internal predecessors, (124), 15 states have call successors, (32), 8 states have call predecessors, (32), 13 states have return successors, (30), 14 states have call predecessors, (30), 14 states have call successors, (30) Word has length 192 [2021-12-18 00:45:32,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:45:32,140 INFO L225 Difference]: With dead ends: 771 [2021-12-18 00:45:32,140 INFO L226 Difference]: Without dead ends: 485 [2021-12-18 00:45:32,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 217 SyntacticMatches, 9 SemanticMatches, 67 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 40.2s TimeCoverageRelationStatistics Valid=303, Invalid=4119, Unknown=8, NotChecked=262, Total=4692 [2021-12-18 00:45:32,143 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 122 mSDsluCounter, 4570 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 4929 SdHoareTripleChecker+Invalid, 5323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3106 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-18 00:45:32,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 4929 Invalid, 5323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2133 Invalid, 0 Unknown, 3106 Unchecked, 2.3s Time] [2021-12-18 00:45:32,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-12-18 00:45:32,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 464. [2021-12-18 00:45:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 311 states have (on average 1.180064308681672) internal successors, (367), 315 states have internal predecessors, (367), 102 states have call successors, (102), 46 states have call predecessors, (102), 50 states have return successors, (130), 102 states have call predecessors, (130), 101 states have call successors, (130) [2021-12-18 00:45:32,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 599 transitions. [2021-12-18 00:45:32,166 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 599 transitions. Word has length 192 [2021-12-18 00:45:32,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:45:32,166 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 599 transitions. [2021-12-18 00:45:32,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 31 states have (on average 4.0) internal successors, (124), 30 states have internal predecessors, (124), 15 states have call successors, (32), 8 states have call predecessors, (32), 13 states have return successors, (30), 14 states have call predecessors, (30), 14 states have call successors, (30) [2021-12-18 00:45:32,167 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 599 transitions. [2021-12-18 00:45:32,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-18 00:45:32,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:45:32,169 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:45:32,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-18 00:45:32,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:45:32,375 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:45:32,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:45:32,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1412197338, now seen corresponding path program 1 times [2021-12-18 00:45:32,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:45:32,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100105757] [2021-12-18 00:45:32,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:45:32,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:45:32,426 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 00:45:32,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295538779] [2021-12-18 00:45:32,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:45:32,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:45:32,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:45:32,428 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) [2021-12-18 00:45:32,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-18 00:45:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:45:33,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 2809 conjuncts, 294 conjunts are in the unsatisfiable core [2021-12-18 00:45:33,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:45:33,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-18 00:45:33,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:45:33,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:45:33,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:45:34,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:45:34,174 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 00:45:34,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 75 [2021-12-18 00:45:34,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:45:34,186 INFO L388 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 54 treesize of output 55 [2021-12-18 00:45:34,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:45:34,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-18 00:45:36,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:45:36,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:45:36,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2021-12-18 00:45:36,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:45:36,352 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-18 00:45:36,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 73 [2021-12-18 00:45:36,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:45:36,373 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-12-18 00:45:36,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 58 [2021-12-18 00:45:36,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2021-12-18 00:45:56,273 INFO L354 Elim1Store]: treesize reduction 130, result has 2.3 percent of original size [2021-12-18 00:45:56,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 80 treesize of output 46 [2021-12-18 00:46:00,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:00,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:00,733 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 00:46:00,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 33 [2021-12-18 00:46:01,282 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 142 proven. 66 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-18 00:46:01,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:46:04,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:46:04,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100105757] [2021-12-18 00:46:04,292 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 00:46:04,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295538779] [2021-12-18 00:46:04,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295538779] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:46:04,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:46:04,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2021-12-18 00:46:04,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023724723] [2021-12-18 00:46:04,293 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 00:46:04,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-12-18 00:46:04,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:46:04,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-12-18 00:46:04,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=3214, Unknown=2, NotChecked=0, Total=3422 [2021-12-18 00:46:04,294 INFO L87 Difference]: Start difference. First operand 464 states and 599 transitions. Second operand has 47 states, 39 states have (on average 3.1025641025641026) internal successors, (121), 37 states have internal predecessors, (121), 17 states have call successors, (31), 7 states have call predecessors, (31), 14 states have return successors, (30), 17 states have call predecessors, (30), 16 states have call successors, (30) [2021-12-18 00:46:08,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:46:08,921 INFO L93 Difference]: Finished difference Result 767 states and 1023 transitions. [2021-12-18 00:46:08,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-12-18 00:46:08,922 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 39 states have (on average 3.1025641025641026) internal successors, (121), 37 states have internal predecessors, (121), 17 states have call successors, (31), 7 states have call predecessors, (31), 14 states have return successors, (30), 17 states have call predecessors, (30), 16 states have call successors, (30) Word has length 195 [2021-12-18 00:46:08,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:46:08,924 INFO L225 Difference]: With dead ends: 767 [2021-12-18 00:46:08,924 INFO L226 Difference]: Without dead ends: 486 [2021-12-18 00:46:08,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 178 SyntacticMatches, 12 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1490 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=288, Invalid=4822, Unknown=2, NotChecked=0, Total=5112 [2021-12-18 00:46:08,926 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 137 mSDsluCounter, 3981 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 4319 SdHoareTripleChecker+Invalid, 4574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2343 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:46:08,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 4319 Invalid, 4574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2143 Invalid, 0 Unknown, 2343 Unchecked, 3.1s Time] [2021-12-18 00:46:08,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-12-18 00:46:08,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 467. [2021-12-18 00:46:08,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 314 states have (on average 1.1815286624203822) internal successors, (371), 318 states have internal predecessors, (371), 102 states have call successors, (102), 46 states have call predecessors, (102), 50 states have return successors, (130), 102 states have call predecessors, (130), 101 states have call successors, (130) [2021-12-18 00:46:08,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 603 transitions. [2021-12-18 00:46:08,946 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 603 transitions. Word has length 195 [2021-12-18 00:46:08,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:46:08,946 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 603 transitions. [2021-12-18 00:46:08,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 39 states have (on average 3.1025641025641026) internal successors, (121), 37 states have internal predecessors, (121), 17 states have call successors, (31), 7 states have call predecessors, (31), 14 states have return successors, (30), 17 states have call predecessors, (30), 16 states have call successors, (30) [2021-12-18 00:46:08,946 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 603 transitions. [2021-12-18 00:46:08,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-12-18 00:46:08,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:46:08,948 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-18 00:46:08,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-18 00:46:09,163 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,SelfDestructingSolverStorable17 [2021-12-18 00:46:09,163 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:46:09,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:46:09,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1341252935, now seen corresponding path program 2 times [2021-12-18 00:46:09,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:46:09,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688688342] [2021-12-18 00:46:09,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:46:09,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:46:09,201 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 00:46:09,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931531158] [2021-12-18 00:46:09,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 00:46:09,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:46:09,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:46:09,203 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) [2021-12-18 00:46:09,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-18 00:46:11,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 00:46:11,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:46:11,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-18 00:46:11,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:46:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-18 00:46:11,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:46:11,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:46:11,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688688342] [2021-12-18 00:46:11,667 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 00:46:11,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931531158] [2021-12-18 00:46:11,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931531158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:46:11,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:46:11,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 00:46:11,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352344166] [2021-12-18 00:46:11,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:46:11,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 00:46:11,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:46:11,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 00:46:11,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 00:46:11,669 INFO L87 Difference]: Start difference. First operand 467 states and 603 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-18 00:46:11,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:46:11,720 INFO L93 Difference]: Finished difference Result 742 states and 993 transitions. [2021-12-18 00:46:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 00:46:11,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 198 [2021-12-18 00:46:11,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:46:11,722 INFO L225 Difference]: With dead ends: 742 [2021-12-18 00:46:11,722 INFO L226 Difference]: Without dead ends: 416 [2021-12-18 00:46:11,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 00:46:11,723 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 2 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 00:46:11,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1125 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 00:46:11,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-12-18 00:46:11,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 404. [2021-12-18 00:46:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 267 states have (on average 1.1722846441947565) internal successors, (313), 270 states have internal predecessors, (313), 94 states have call successors, (94), 40 states have call predecessors, (94), 42 states have return successors, (111), 93 states have call predecessors, (111), 93 states have call successors, (111) [2021-12-18 00:46:11,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 518 transitions. [2021-12-18 00:46:11,739 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 518 transitions. Word has length 198 [2021-12-18 00:46:11,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:46:11,739 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 518 transitions. [2021-12-18 00:46:11,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-18 00:46:11,739 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 518 transitions. [2021-12-18 00:46:11,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-12-18 00:46:11,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:46:11,740 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:46:11,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-18 00:46:11,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:46:11,951 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:46:11,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:46:11,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1136387251, now seen corresponding path program 1 times [2021-12-18 00:46:11,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:46:11,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061907150] [2021-12-18 00:46:11,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:46:11,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:46:11,987 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 00:46:11,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833152498] [2021-12-18 00:46:11,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:46:11,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:46:11,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:46:11,989 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:46:11,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-18 00:46:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:12,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 2817 conjuncts, 374 conjunts are in the unsatisfiable core [2021-12-18 00:46:12,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:46:12,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:46:13,520 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-18 00:46:13,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-18 00:46:13,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:46:14,212 INFO L354 Elim1Store]: treesize reduction 173, result has 26.4 percent of original size [2021-12-18 00:46:14,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 147 treesize of output 186 [2021-12-18 00:46:15,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:46:15,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:15,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:15,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-12-18 00:46:15,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:46:15,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2021-12-18 00:46:15,523 INFO L388 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 [2021-12-18 00:46:15,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:15,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2021-12-18 00:46:15,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:15,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:15,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2021-12-18 00:46:17,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:17,165 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 00:46:17,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 111 [2021-12-18 00:46:17,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:17,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:17,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:17,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 81 [2021-12-18 00:46:17,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:17,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-18 00:46:17,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:17,215 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-12-18 00:46:17,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2021-12-18 00:46:18,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:18,684 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-18 00:46:18,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-12-18 00:46:18,939 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5321 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_5321))) (exists ((v_ArrVal_5320 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_5320))) (exists ((v_ArrVal_5322 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_5322)))) is different from true [2021-12-18 00:46:18,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2021-12-18 00:46:18,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 56 [2021-12-18 00:46:19,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-12-18 00:46:19,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:19,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 47 [2021-12-18 00:46:19,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:19,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 76 [2021-12-18 00:46:19,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:19,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2021-12-18 00:46:19,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-18 00:46:22,324 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 84 proven. 121 refuted. 0 times theorem prover too weak. 27 trivial. 1 not checked. [2021-12-18 00:46:22,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:46:23,074 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5327 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base| v_ArrVal_5327) |c_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base|) (+ |c_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.offset| 40)) 18446744073709551616))) is different from false [2021-12-18 00:46:23,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:46:23,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061907150] [2021-12-18 00:46:23,151 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 00:46:23,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833152498] [2021-12-18 00:46:23,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833152498] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:46:23,151 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:46:23,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2021-12-18 00:46:23,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789903706] [2021-12-18 00:46:23,151 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 00:46:23,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-18 00:46:23,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:46:23,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-18 00:46:23,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1761, Unknown=2, NotChecked=170, Total=2070 [2021-12-18 00:46:23,153 INFO L87 Difference]: Start difference. First operand 404 states and 518 transitions. Second operand has 41 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 35 states have internal predecessors, (112), 18 states have call successors, (30), 9 states have call predecessors, (30), 12 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) [2021-12-18 00:46:29,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:46:29,884 INFO L93 Difference]: Finished difference Result 825 states and 1055 transitions. [2021-12-18 00:46:29,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-18 00:46:29,885 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 35 states have internal predecessors, (112), 18 states have call successors, (30), 9 states have call predecessors, (30), 12 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) Word has length 193 [2021-12-18 00:46:29,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:46:29,887 INFO L225 Difference]: With dead ends: 825 [2021-12-18 00:46:29,887 INFO L226 Difference]: Without dead ends: 537 [2021-12-18 00:46:29,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 196 SyntacticMatches, 26 SemanticMatches, 69 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1628 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=305, Invalid=4375, Unknown=20, NotChecked=270, Total=4970 [2021-12-18 00:46:29,889 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 262 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 2867 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 3000 SdHoareTripleChecker+Invalid, 6353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 2867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3225 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-18 00:46:29,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 3000 Invalid, 6353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 2867 Invalid, 0 Unknown, 3225 Unchecked, 4.5s Time] [2021-12-18 00:46:29,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-12-18 00:46:29,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 531. [2021-12-18 00:46:29,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 354 states have (on average 1.1384180790960452) internal successors, (403), 360 states have internal predecessors, (403), 114 states have call successors, (114), 56 states have call predecessors, (114), 62 states have return successors, (138), 114 states have call predecessors, (138), 113 states have call successors, (138) [2021-12-18 00:46:29,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 655 transitions. [2021-12-18 00:46:29,910 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 655 transitions. Word has length 193 [2021-12-18 00:46:29,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:46:29,911 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 655 transitions. [2021-12-18 00:46:29,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 35 states have internal predecessors, (112), 18 states have call successors, (30), 9 states have call predecessors, (30), 12 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) [2021-12-18 00:46:29,911 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 655 transitions. [2021-12-18 00:46:29,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-12-18 00:46:29,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:46:29,912 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:46:29,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-18 00:46:30,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:46:30,126 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:46:30,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:46:30,126 INFO L85 PathProgramCache]: Analyzing trace with hash -118160158, now seen corresponding path program 1 times [2021-12-18 00:46:30,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:46:30,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336612692] [2021-12-18 00:46:30,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:46:30,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:46:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:46:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:46:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:46:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:46:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:46:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:46:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:46:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:46:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 00:46:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:46:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 00:46:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 00:46:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:46:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:46:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 00:46:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:46:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 00:46:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 00:46:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 00:46:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:46:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 00:46:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-18 00:46:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 00:46:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 00:46:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 00:46:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:46:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 00:46:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-18 00:46:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:46:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 00:46:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:46:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:30,553 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-12-18 00:46:30,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:46:30,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336612692] [2021-12-18 00:46:30,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336612692] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:46:30,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:46:30,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 00:46:30,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700070699] [2021-12-18 00:46:30,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:46:30,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 00:46:30,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:46:30,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 00:46:30,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-18 00:46:30,555 INFO L87 Difference]: Start difference. First operand 531 states and 655 transitions. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (27), 6 states have call predecessors, (27), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 00:46:31,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:46:31,770 INFO L93 Difference]: Finished difference Result 910 states and 1144 transitions. [2021-12-18 00:46:31,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 00:46:31,771 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (27), 6 states have call predecessors, (27), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) Word has length 199 [2021-12-18 00:46:31,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:46:31,773 INFO L225 Difference]: With dead ends: 910 [2021-12-18 00:46:31,773 INFO L226 Difference]: Without dead ends: 523 [2021-12-18 00:46:31,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-12-18 00:46:31,774 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 363 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:46:31,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1566 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-18 00:46:31,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-12-18 00:46:31,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2021-12-18 00:46:31,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 349 states have (on average 1.1375358166189111) internal successors, (397), 354 states have internal predecessors, (397), 112 states have call successors, (112), 56 states have call predecessors, (112), 61 states have return successors, (134), 112 states have call predecessors, (134), 111 states have call successors, (134) [2021-12-18 00:46:31,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 643 transitions. [2021-12-18 00:46:31,812 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 643 transitions. Word has length 199 [2021-12-18 00:46:31,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:46:31,812 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 643 transitions. [2021-12-18 00:46:31,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (27), 6 states have call predecessors, (27), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 00:46:31,813 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 643 transitions. [2021-12-18 00:46:31,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-12-18 00:46:31,814 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:46:31,814 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:46:31,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-18 00:46:31,814 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:46:31,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:46:31,815 INFO L85 PathProgramCache]: Analyzing trace with hash 207114854, now seen corresponding path program 1 times [2021-12-18 00:46:31,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:46:31,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644089619] [2021-12-18 00:46:31,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:46:31,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:46:31,851 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 00:46:31,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995027865] [2021-12-18 00:46:31,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:46:31,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:46:31,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:46:31,853 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:46:31,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-18 00:46:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:46:34,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 2828 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 00:46:34,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:46:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 126 proven. 1 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-12-18 00:46:34,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:46:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-12-18 00:46:34,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:46:34,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644089619] [2021-12-18 00:46:34,615 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 00:46:34,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995027865] [2021-12-18 00:46:34,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995027865] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:46:34,615 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:46:34,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-18 00:46:34,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690837281] [2021-12-18 00:46:34,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:46:34,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 00:46:34,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:46:34,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 00:46:34,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-18 00:46:34,617 INFO L87 Difference]: Start difference. First operand 523 states and 643 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 00:46:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:46:34,721 INFO L93 Difference]: Finished difference Result 826 states and 1059 transitions. [2021-12-18 00:46:34,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 00:46:34,723 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 196 [2021-12-18 00:46:34,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:46:34,725 INFO L225 Difference]: With dead ends: 826 [2021-12-18 00:46:34,725 INFO L226 Difference]: Without dead ends: 483 [2021-12-18 00:46:34,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-12-18 00:46:34,726 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 10 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 00:46:34,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2219 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 00:46:34,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-12-18 00:46:34,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 428. [2021-12-18 00:46:34,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 286 states have (on average 1.167832167832168) internal successors, (334), 290 states have internal predecessors, (334), 94 states have call successors, (94), 43 states have call predecessors, (94), 47 states have return successors, (113), 94 states have call predecessors, (113), 93 states have call successors, (113) [2021-12-18 00:46:34,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 541 transitions. [2021-12-18 00:46:34,742 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 541 transitions. Word has length 196 [2021-12-18 00:46:34,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:46:34,743 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 541 transitions. [2021-12-18 00:46:34,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 00:46:34,743 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 541 transitions. [2021-12-18 00:46:34,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-12-18 00:46:34,745 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:46:34,745 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:46:34,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-18 00:46:34,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:46:34,946 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:46:34,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:46:34,946 INFO L85 PathProgramCache]: Analyzing trace with hash -839699623, now seen corresponding path program 2 times [2021-12-18 00:46:34,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:46:34,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482356114] [2021-12-18 00:46:34,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:46:34,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:46:34,989 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 00:46:34,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1593098896] [2021-12-18 00:46:34,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 00:46:34,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:46:34,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:46:34,990 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:46:35,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-18 00:46:36,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 00:46:36,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:46:36,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 2874 conjuncts, 225 conjunts are in the unsatisfiable core [2021-12-18 00:46:36,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:46:36,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:46:36,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2021-12-18 00:46:36,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:46:36,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:36,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2021-12-18 00:46:37,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:37,938 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 00:46:37,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 102 [2021-12-18 00:46:37,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:37,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:37,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:37,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 81 [2021-12-18 00:46:37,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:37,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-18 00:46:39,411 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6226 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_6226))) is different from true [2021-12-18 00:46:39,415 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6227 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_6227))) is different from true [2021-12-18 00:46:39,419 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6228 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_6228))) is different from true [2021-12-18 00:46:39,423 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6229 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_6229))) is different from true [2021-12-18 00:46:39,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:39,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2021-12-18 00:46:39,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 37 [2021-12-18 00:46:39,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 00:46:39,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:39,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:39,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-12-18 00:46:39,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:39,667 INFO L388 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 [2021-12-18 00:46:39,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2021-12-18 00:46:41,839 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base| Int) (v_s_get_next_element_~iter.base_BEFORE_CALL_45 Int)) (let ((.cse1 (+ |ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base| 1)) (.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base|) 40))) (and (= (select (select |c_#memory_int| v_s_get_next_element_~iter.base_BEFORE_CALL_45) 32) .cse0) (< .cse1 v_s_get_next_element_~iter.base_BEFORE_CALL_45) (< .cse1 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_45) 0)) (< (div (+ (* .cse0 (- 1)) 18446744073709551615) (- 18446744073709551616)) (+ (div (+ .cse0 (- 1)) 18446744073709551616) 1))))) is different from true [2021-12-18 00:46:42,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-18 00:46:43,831 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_46 Int) (|ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base|) 40))) (and (< (+ |ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base| 1) v_s_get_next_element_~iter.base_BEFORE_CALL_46) (= (select (select |c_#memory_int| v_s_get_next_element_~iter.base_BEFORE_CALL_46) 32) .cse0) (< (div (+ (* .cse0 (- 1)) 18446744073709551615) (- 18446744073709551616)) (+ (div (+ .cse0 (- 1)) 18446744073709551616) 1))))) is different from true [2021-12-18 00:46:46,217 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_47 Int) (|v_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base_6| Int)) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base_6|) 40))) (and (< (div (+ (* .cse0 (- 1)) 18446744073709551615) (- 18446744073709551616)) (+ (div (+ .cse0 (- 1)) 18446744073709551616) 1)) (= (select (select |c_#memory_int| v_s_get_next_element_~iter.base_BEFORE_CALL_47) 32) .cse0) (< (+ |v_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base_6| 1) v_s_get_next_element_~iter.base_BEFORE_CALL_47)))) is different from true [2021-12-18 00:46:46,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 00:46:46,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:46:46,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-12-18 00:46:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 117 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 74 not checked. [2021-12-18 00:46:46,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:46:47,445 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6235 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base| v_ArrVal_6235) |c_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base|) (+ |c_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.offset| 40)) 18446744073709551616))) is different from false [2021-12-18 00:46:47,550 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6235 (Array Int Int)) (|v_#Ultimate.C_memset_#ptr.base_14| Int) (v_ArrVal_6241 (Array Int Int))) (or (< |v_#Ultimate.C_memset_#ptr.base_14| |c_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base|) (< 0 (mod (select (select (store (store |c_#memory_int| |v_#Ultimate.C_memset_#ptr.base_14| v_ArrVal_6241) |c_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base| v_ArrVal_6235) |c_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base|) (+ |c_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.offset| 40)) 18446744073709551616)))) is different from false [2021-12-18 00:46:47,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:46:47,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482356114] [2021-12-18 00:46:47,554 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 00:46:47,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593098896] [2021-12-18 00:46:47,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593098896] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:46:47,554 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:46:47,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2021-12-18 00:46:47,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992387649] [2021-12-18 00:46:47,554 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 00:46:47,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-18 00:46:47,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:46:47,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-18 00:46:47,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1046, Unknown=9, NotChecked=648, Total=1806 [2021-12-18 00:46:47,556 INFO L87 Difference]: Start difference. First operand 428 states and 541 transitions. Second operand has 34 states, 28 states have (on average 4.071428571428571) internal successors, (114), 29 states have internal predecessors, (114), 16 states have call successors, (31), 8 states have call predecessors, (31), 10 states have return successors, (29), 13 states have call predecessors, (29), 15 states have call successors, (29) [2021-12-18 00:47:12,370 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_47 Int) (|v_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base_6| Int)) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base_6|) 40))) (and (< (div (+ (* .cse0 (- 1)) 18446744073709551615) (- 18446744073709551616)) (+ (div (+ .cse0 (- 1)) 18446744073709551616) 1)) (= (select (select |c_#memory_int| v_s_get_next_element_~iter.base_BEFORE_CALL_47) 32) .cse0) (< (+ |v_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base_6| 1) v_s_get_next_element_~iter.base_BEFORE_CALL_47)))) (not (= 0 (mod |c_assume_abort_if_not_#in~cond| 256)))) is different from true [2021-12-18 00:47:14,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:47:14,441 INFO L93 Difference]: Finished difference Result 751 states and 976 transitions. [2021-12-18 00:47:14,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-18 00:47:14,441 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 28 states have (on average 4.071428571428571) internal successors, (114), 29 states have internal predecessors, (114), 16 states have call successors, (31), 8 states have call predecessors, (31), 10 states have return successors, (29), 13 states have call predecessors, (29), 15 states have call successors, (29) Word has length 196 [2021-12-18 00:47:14,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:47:14,443 INFO L225 Difference]: With dead ends: 751 [2021-12-18 00:47:14,443 INFO L226 Difference]: Without dead ends: 481 [2021-12-18 00:47:14,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 215 SyntacticMatches, 9 SemanticMatches, 59 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=186, Invalid=2390, Unknown=14, NotChecked=1070, Total=3660 [2021-12-18 00:47:14,445 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 119 mSDsluCounter, 3114 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 3458 SdHoareTripleChecker+Invalid, 6923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4746 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-18 00:47:14,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 3458 Invalid, 6923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2088 Invalid, 0 Unknown, 4746 Unchecked, 3.0s Time] [2021-12-18 00:47:14,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-12-18 00:47:14,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 471. [2021-12-18 00:47:14,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 316 states have (on average 1.1582278481012658) internal successors, (366), 321 states have internal predecessors, (366), 100 states have call successors, (100), 49 states have call predecessors, (100), 54 states have return successors, (121), 100 states have call predecessors, (121), 99 states have call successors, (121) [2021-12-18 00:47:14,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 587 transitions. [2021-12-18 00:47:14,467 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 587 transitions. Word has length 196 [2021-12-18 00:47:14,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:47:14,468 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 587 transitions. [2021-12-18 00:47:14,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 28 states have (on average 4.071428571428571) internal successors, (114), 29 states have internal predecessors, (114), 16 states have call successors, (31), 8 states have call predecessors, (31), 10 states have return successors, (29), 13 states have call predecessors, (29), 15 states have call successors, (29) [2021-12-18 00:47:14,468 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 587 transitions. [2021-12-18 00:47:14,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-12-18 00:47:14,469 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:47:14,469 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:47:14,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-18 00:47:14,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:47:14,694 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:47:14,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:47:14,694 INFO L85 PathProgramCache]: Analyzing trace with hash 457449037, now seen corresponding path program 3 times [2021-12-18 00:47:14,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:47:14,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115390093] [2021-12-18 00:47:14,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:47:14,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:47:14,736 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 00:47:14,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150747013] [2021-12-18 00:47:14,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 00:47:14,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:47:14,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:47:14,738 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:47:14,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-18 00:47:24,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-18 00:47:24,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:47:24,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 2589 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-18 00:47:24,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:47:24,360 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 126 proven. 15 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-18 00:47:24,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:47:24,806 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-12-18 00:47:24,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:47:24,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115390093] [2021-12-18 00:47:24,809 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 00:47:24,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150747013] [2021-12-18 00:47:24,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150747013] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:47:24,809 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:47:24,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-12-18 00:47:24,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982426841] [2021-12-18 00:47:24,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:47:24,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-18 00:47:24,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:47:24,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-18 00:47:24,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-12-18 00:47:24,810 INFO L87 Difference]: Start difference. First operand 471 states and 587 transitions. Second operand has 16 states, 16 states have (on average 6.375) internal successors, (102), 16 states have internal predecessors, (102), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 00:47:25,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:47:25,707 INFO L93 Difference]: Finished difference Result 787 states and 1021 transitions. [2021-12-18 00:47:25,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-18 00:47:25,707 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.375) internal successors, (102), 16 states have internal predecessors, (102), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 197 [2021-12-18 00:47:25,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:47:25,709 INFO L225 Difference]: With dead ends: 787 [2021-12-18 00:47:25,709 INFO L226 Difference]: Without dead ends: 440 [2021-12-18 00:47:25,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=316, Invalid=614, Unknown=0, NotChecked=0, Total=930 [2021-12-18 00:47:25,710 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 70 mSDsluCounter, 2238 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 00:47:25,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 2613 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 00:47:25,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-12-18 00:47:25,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2021-12-18 00:47:25,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 298 states have (on average 1.1543624161073827) internal successors, (344), 302 states have internal predecessors, (344), 94 states have call successors, (94), 43 states have call predecessors, (94), 47 states have return successors, (113), 94 states have call predecessors, (113), 93 states have call successors, (113) [2021-12-18 00:47:25,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 551 transitions. [2021-12-18 00:47:25,727 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 551 transitions. Word has length 197 [2021-12-18 00:47:25,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:47:25,727 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 551 transitions. [2021-12-18 00:47:25,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.375) internal successors, (102), 16 states have internal predecessors, (102), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 00:47:25,728 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 551 transitions. [2021-12-18 00:47:25,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-12-18 00:47:25,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:47:25,729 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:47:25,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-18 00:47:25,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-18 00:47:25,943 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:47:25,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:47:25,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1960242521, now seen corresponding path program 4 times [2021-12-18 00:47:25,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:47:25,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150725921] [2021-12-18 00:47:25,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:47:25,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:47:25,985 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 00:47:25,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334499140] [2021-12-18 00:47:25,985 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-18 00:47:25,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:47:25,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:47:25,986 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:47:25,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-18 00:47:26,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-18 00:47:26,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:47:26,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 3026 conjuncts, 227 conjunts are in the unsatisfiable core [2021-12-18 00:47:26,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:47:27,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:47:27,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2021-12-18 00:47:27,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:47:27,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:47:27,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2021-12-18 00:47:28,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:47:28,729 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 00:47:28,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 102 [2021-12-18 00:47:28,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:47:28,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:47:28,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:47:28,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 81 [2021-12-18 00:47:28,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:47:28,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-18 00:47:30,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 37 [2021-12-18 00:47:30,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 00:47:30,342 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7121 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_7121))) is different from true [2021-12-18 00:47:30,347 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7122 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_7122))) is different from true [2021-12-18 00:47:30,351 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7123 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_7123))) is different from true [2021-12-18 00:47:30,355 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7124 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_7124))) is different from true [2021-12-18 00:47:30,360 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7125 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_7125))) is different from true [2021-12-18 00:47:30,365 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7126 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_7126))) is different from true [2021-12-18 00:47:30,368 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7127 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_7127))) is different from true [2021-12-18 00:47:30,372 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7128 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_7128))) is different from true [2021-12-18 00:47:30,376 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7129 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_7129))) is different from true [2021-12-18 00:47:30,380 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7130 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_7130))) is different from true [2021-12-18 00:47:30,384 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7131 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_7131))) is different from true [2021-12-18 00:47:30,388 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7132 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_7132))) is different from true [2021-12-18 00:47:30,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:47:30,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2021-12-18 00:47:30,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:47:30,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:47:30,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-12-18 00:47:30,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2021-12-18 00:47:32,487 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_51 Int) (|ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base|) 40))) (and (= (select (select |c_#memory_int| v_s_get_next_element_~iter.base_BEFORE_CALL_51) 32) .cse0) (< (+ |ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base| 1) v_s_get_next_element_~iter.base_BEFORE_CALL_51) (< (div (+ (* .cse0 (- 1)) 18446744073709551615) (- 18446744073709551616)) (+ (div (+ .cse0 (- 1)) 18446744073709551616) 1))))) is different from true [2021-12-18 00:47:34,495 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_52 Int) (|ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base|) 40))) (and (< (+ |ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base| 1) v_s_get_next_element_~iter.base_BEFORE_CALL_52) (= (select (select |c_#memory_int| v_s_get_next_element_~iter.base_BEFORE_CALL_52) 32) .cse0) (< (div (+ (* .cse0 (- 1)) 18446744073709551615) (- 18446744073709551616)) (+ (div (+ .cse0 (- 1)) 18446744073709551616) 1))))) is different from true [2021-12-18 00:47:40,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:47:40,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 00:47:40,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-12-18 00:47:43,166 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 108 proven. 36 refuted. 0 times theorem prover too weak. 32 trivial. 134 not checked. [2021-12-18 00:47:43,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:47:45,799 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7133 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base| v_ArrVal_7133) |c_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base|) (+ |c_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.offset| 40)) 18446744073709551616))) is different from false [2021-12-18 00:47:45,916 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7133 (Array Int Int)) (v_ArrVal_7149 (Array Int Int)) (|v_#Ultimate.C_memset_#ptr.base_19| Int)) (or (< |v_#Ultimate.C_memset_#ptr.base_19| |c_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base|) (< 0 (mod (select (select (store (store |c_#memory_int| |v_#Ultimate.C_memset_#ptr.base_19| v_ArrVal_7149) |c_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base| v_ArrVal_7133) |c_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base|) (+ |c_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.offset| 40)) 18446744073709551616)))) is different from false [2021-12-18 00:47:45,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:47:45,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150725921] [2021-12-18 00:47:45,920 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 00:47:45,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334499140] [2021-12-18 00:47:45,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334499140] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:47:45,921 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:47:45,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2021-12-18 00:47:45,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019920792] [2021-12-18 00:47:45,921 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 00:47:45,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-18 00:47:45,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:47:45,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-18 00:47:45,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=863, Unknown=20, NotChecked=1168, Total=2162 [2021-12-18 00:47:45,922 INFO L87 Difference]: Start difference. First operand 440 states and 551 transitions. Second operand has 41 states, 37 states have (on average 3.2972972972972974) internal successors, (122), 37 states have internal predecessors, (122), 15 states have call successors, (31), 8 states have call predecessors, (31), 11 states have return successors, (29), 13 states have call predecessors, (29), 14 states have call successors, (29) [2021-12-18 00:48:05,067 WARN L227 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 40 DAG size of output: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 00:48:29,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:48:29,748 INFO L93 Difference]: Finished difference Result 775 states and 1004 transitions. [2021-12-18 00:48:29,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-12-18 00:48:29,750 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 37 states have (on average 3.2972972972972974) internal successors, (122), 37 states have internal predecessors, (122), 15 states have call successors, (31), 8 states have call predecessors, (31), 11 states have return successors, (29), 13 states have call predecessors, (29), 14 states have call successors, (29) Word has length 204 [2021-12-18 00:48:29,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:48:29,752 INFO L225 Difference]: With dead ends: 775 [2021-12-18 00:48:29,752 INFO L226 Difference]: Without dead ends: 503 [2021-12-18 00:48:29,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 218 SyntacticMatches, 11 SemanticMatches, 65 ConstructedPredicates, 16 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 56.0s TimeCoverageRelationStatistics Valid=225, Invalid=2362, Unknown=27, NotChecked=1808, Total=4422 [2021-12-18 00:48:29,754 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 115 mSDsluCounter, 3096 mSDsCounter, 0 mSdLazyCounter, 2095 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 3438 SdHoareTripleChecker+Invalid, 9236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7055 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:48:29,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 3438 Invalid, 9236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2095 Invalid, 0 Unknown, 7055 Unchecked, 3.1s Time] [2021-12-18 00:48:29,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-12-18 00:48:29,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 483. [2021-12-18 00:48:29,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 328 states have (on average 1.1524390243902438) internal successors, (378), 333 states have internal predecessors, (378), 100 states have call successors, (100), 49 states have call predecessors, (100), 54 states have return successors, (121), 100 states have call predecessors, (121), 99 states have call successors, (121) [2021-12-18 00:48:29,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 599 transitions. [2021-12-18 00:48:29,776 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 599 transitions. Word has length 204 [2021-12-18 00:48:29,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:48:29,777 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 599 transitions. [2021-12-18 00:48:29,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 37 states have (on average 3.2972972972972974) internal successors, (122), 37 states have internal predecessors, (122), 15 states have call successors, (31), 8 states have call predecessors, (31), 11 states have return successors, (29), 13 states have call predecessors, (29), 14 states have call successors, (29) [2021-12-18 00:48:29,777 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 599 transitions. [2021-12-18 00:48:29,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-12-18 00:48:29,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:48:29,778 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:48:29,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-18 00:48:29,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-18 00:48:29,991 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:48:29,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:48:29,992 INFO L85 PathProgramCache]: Analyzing trace with hash 302101722, now seen corresponding path program 2 times [2021-12-18 00:48:29,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:48:29,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781575494] [2021-12-18 00:48:29,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:48:29,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:48:30,037 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 00:48:30,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918989031] [2021-12-18 00:48:30,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 00:48:30,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:48:30,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:48:30,039 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:48:30,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-18 00:48:31,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 00:48:31,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:48:31,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 315 conjunts are in the unsatisfiable core [2021-12-18 00:48:31,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:48:32,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:48:32,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:48:32,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:32,848 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 00:48:32,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-12-18 00:48:32,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:32,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-18 00:48:46,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 17 [2021-12-18 00:48:48,802 INFO L354 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2021-12-18 00:48:48,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 28 [2021-12-18 00:48:51,289 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-18 00:48:51,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2021-12-18 00:48:54,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-18 00:48:54,477 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimArr_11 (Array Int Int))) (and (= (select v_arrayElimArr_11 (+ |c_#Ultimate.C_memset_#ptr.offset| 8)) (mod |c_#Ultimate.C_memset_#value| 256)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_arrayElimArr_11)))) (exists ((v_ArrVal_7660 Int) (v_ArrVal_7682 Int) (v_ArrVal_7669 Int) (v_ArrVal_7655 Int) (v_ArrVal_7667 Int) (v_ArrVal_7678 Int) (v_ArrVal_7657 Int) (v_ArrVal_7683 Int) (|v_#Ultimate.C_memset_#t~loopctr1336_77| Int) (v_ArrVal_7652 Int) (v_ArrVal_7664 Int)) (and (<= 11 |v_#Ultimate.C_memset_#t~loopctr1336_77|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) |c_#Ultimate.C_memset_#ptr.offset| 0) (+ |c_#Ultimate.C_memset_#ptr.offset| 1) v_ArrVal_7652) (+ |c_#Ultimate.C_memset_#ptr.offset| 2) v_ArrVal_7655) (+ |c_#Ultimate.C_memset_#ptr.offset| 3) v_ArrVal_7657) (+ |c_#Ultimate.C_memset_#ptr.offset| 4) v_ArrVal_7660) (+ |c_#Ultimate.C_memset_#ptr.offset| 5) v_ArrVal_7664) (+ |c_#Ultimate.C_memset_#ptr.offset| 6) v_ArrVal_7667) (+ |c_#Ultimate.C_memset_#ptr.offset| 7) v_ArrVal_7669) (+ |c_#Ultimate.C_memset_#ptr.offset| 8) 0) (+ |c_#Ultimate.C_memset_#ptr.offset| 9) v_ArrVal_7678) (+ |c_#Ultimate.C_memset_#ptr.offset| 10) v_ArrVal_7682) (+ |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr1336_77|) v_ArrVal_7683)))))) is different from true [2021-12-18 00:48:54,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:54,886 INFO L354 Elim1Store]: treesize reduction 35, result has 30.0 percent of original size [2021-12-18 00:48:54,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 66 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 134 [2021-12-18 00:48:54,948 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:48:54,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2021-12-18 00:48:54,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:48:55,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:55,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2021-12-18 00:48:55,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:55,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:55,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:55,394 INFO L354 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2021-12-18 00:48:55,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 58 [2021-12-18 00:48:55,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:55,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:55,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:48:55,429 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-18 00:48:55,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 67 [2021-12-18 00:49:19,166 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 133 proven. 119 refuted. 0 times theorem prover too weak. 47 trivial. 12 not checked. [2021-12-18 00:49:19,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:49:47,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:49:47,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781575494] [2021-12-18 00:49:47,004 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 00:49:47,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918989031] [2021-12-18 00:49:47,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918989031] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:49:47,004 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:49:47,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2021-12-18 00:49:47,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607300622] [2021-12-18 00:49:47,004 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 00:49:47,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-12-18 00:49:47,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:49:47,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-12-18 00:49:47,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=3601, Unknown=2, NotChecked=120, Total=3906 [2021-12-18 00:49:47,005 INFO L87 Difference]: Start difference. First operand 483 states and 599 transitions. Second operand has 45 states, 39 states have (on average 3.076923076923077) internal successors, (120), 38 states have internal predecessors, (120), 13 states have call successors, (30), 6 states have call predecessors, (30), 9 states have return successors, (28), 13 states have call predecessors, (28), 12 states have call successors, (28) [2021-12-18 00:49:57,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:49:57,387 INFO L93 Difference]: Finished difference Result 797 states and 1025 transitions. [2021-12-18 00:49:57,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-18 00:49:57,387 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 39 states have (on average 3.076923076923077) internal successors, (120), 38 states have internal predecessors, (120), 13 states have call successors, (30), 6 states have call predecessors, (30), 9 states have return successors, (28), 13 states have call predecessors, (28), 12 states have call successors, (28) Word has length 207 [2021-12-18 00:49:57,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:49:57,389 INFO L225 Difference]: With dead ends: 797 [2021-12-18 00:49:57,389 INFO L226 Difference]: Without dead ends: 504 [2021-12-18 00:49:57,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 184 SyntacticMatches, 15 SemanticMatches, 68 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 64.0s TimeCoverageRelationStatistics Valid=219, Invalid=4474, Unknown=3, NotChecked=134, Total=4830 [2021-12-18 00:49:57,391 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 129 mSDsluCounter, 4848 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 5207 SdHoareTripleChecker+Invalid, 9172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7307 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-12-18 00:49:57,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 5207 Invalid, 9172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1782 Invalid, 0 Unknown, 7307 Unchecked, 6.2s Time] [2021-12-18 00:49:57,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-12-18 00:49:57,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 485. [2021-12-18 00:49:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 330 states have (on average 1.1454545454545455) internal successors, (378), 335 states have internal predecessors, (378), 100 states have call successors, (100), 49 states have call predecessors, (100), 54 states have return successors, (121), 100 states have call predecessors, (121), 99 states have call successors, (121) [2021-12-18 00:49:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 599 transitions. [2021-12-18 00:49:57,417 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 599 transitions. Word has length 207 [2021-12-18 00:49:57,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:49:57,418 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 599 transitions. [2021-12-18 00:49:57,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 39 states have (on average 3.076923076923077) internal successors, (120), 38 states have internal predecessors, (120), 13 states have call successors, (30), 6 states have call predecessors, (30), 9 states have return successors, (28), 13 states have call predecessors, (28), 12 states have call successors, (28) [2021-12-18 00:49:57,418 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 599 transitions. [2021-12-18 00:49:57,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-12-18 00:49:57,419 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:49:57,419 INFO L514 BasicCegarLoop]: trace histogram [13, 8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:49:57,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-12-18 00:49:57,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-18 00:49:57,627 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:49:57,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:49:57,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1356309581, now seen corresponding path program 5 times [2021-12-18 00:49:57,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:49:57,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925831106] [2021-12-18 00:49:57,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:49:57,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:49:57,693 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 00:49:57,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872808316] [2021-12-18 00:49:57,693 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-18 00:49:57,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:49:57,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:49:57,695 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:49:57,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-18 00:52:09,644 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-12-18 00:52:09,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:52:09,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-18 00:52:09,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:52:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 126 proven. 91 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-18 00:52:10,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:52:11,719 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-12-18 00:52:11,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:52:11,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925831106] [2021-12-18 00:52:11,720 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 00:52:11,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872808316] [2021-12-18 00:52:11,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872808316] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:52:11,720 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:52:11,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-12-18 00:52:11,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659066785] [2021-12-18 00:52:11,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:52:11,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-18 00:52:11,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:52:11,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-18 00:52:11,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-12-18 00:52:11,721 INFO L87 Difference]: Start difference. First operand 485 states and 599 transitions. Second operand has 32 states, 32 states have (on average 3.6875) internal successors, (118), 32 states have internal predecessors, (118), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 00:52:32,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:52:32,429 INFO L93 Difference]: Finished difference Result 825 states and 1069 transitions. [2021-12-18 00:52:32,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-18 00:52:32,430 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.6875) internal successors, (118), 32 states have internal predecessors, (118), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 205 [2021-12-18 00:52:32,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:52:32,432 INFO L225 Difference]: With dead ends: 825 [2021-12-18 00:52:32,432 INFO L226 Difference]: Without dead ends: 464 [2021-12-18 00:52:32,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=1446, Invalid=3110, Unknown=0, NotChecked=0, Total=4556 [2021-12-18 00:52:32,434 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 171 mSDsluCounter, 5612 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 5990 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-18 00:52:32,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 5990 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-18 00:52:32,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-12-18 00:52:32,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2021-12-18 00:52:32,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 322 states have (on average 1.1428571428571428) internal successors, (368), 326 states have internal predecessors, (368), 94 states have call successors, (94), 43 states have call predecessors, (94), 47 states have return successors, (113), 94 states have call predecessors, (113), 93 states have call successors, (113) [2021-12-18 00:52:32,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 575 transitions. [2021-12-18 00:52:32,459 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 575 transitions. Word has length 205 [2021-12-18 00:52:32,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:52:32,459 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 575 transitions. [2021-12-18 00:52:32,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.6875) internal successors, (118), 32 states have internal predecessors, (118), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 00:52:32,460 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 575 transitions. [2021-12-18 00:52:32,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-12-18 00:52:32,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:52:32,461 INFO L514 BasicCegarLoop]: trace histogram [28, 8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:52:32,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-12-18 00:52:32,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:52:32,671 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:52:32,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:52:32,672 INFO L85 PathProgramCache]: Analyzing trace with hash 764436825, now seen corresponding path program 6 times [2021-12-18 00:52:32,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:52:32,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988367414] [2021-12-18 00:52:32,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:52:32,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:52:32,722 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 00:52:32,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076752432] [2021-12-18 00:52:32,722 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-18 00:52:32,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:52:32,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:52:32,723 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:52:32,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process Killed by 15