./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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_linked_list_begin_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b8488bc4b38d88c79bc520e9824284003ed2f71ce856a53cf11e7fc61dbeef4b --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 13:12:53,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 13:12:53,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 13:12:53,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 13:12:53,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 13:12:53,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 13:12:53,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 13:12:53,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 13:12:53,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 13:12:53,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 13:12:53,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 13:12:53,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 13:12:53,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 13:12:53,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 13:12:53,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 13:12:53,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 13:12:53,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 13:12:53,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 13:12:53,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 13:12:53,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 13:12:53,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 13:12:53,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 13:12:53,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 13:12:53,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 13:12:53,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 13:12:53,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 13:12:53,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 13:12:53,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 13:12:53,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 13:12:53,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 13:12:53,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 13:12:53,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 13:12:53,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 13:12:53,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 13:12:53,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 13:12:53,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 13:12:53,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 13:12:53,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 13:12:53,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 13:12:53,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 13:12:53,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 13:12:53,720 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 13:12:53,748 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 13:12:53,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 13:12:53,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 13:12:53,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 13:12:53,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 13:12:53,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 13:12:53,751 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 13:12:53,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 13:12:53,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 13:12:53,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 13:12:53,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 13:12:53,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 13:12:53,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 13:12:53,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 13:12:53,752 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 13:12:53,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 13:12:53,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 13:12:53,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 13:12:53,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 13:12:53,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:12:53,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 13:12:53,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 13:12:53,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 13:12:53,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 13:12:53,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 13:12:53,754 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 13:12:53,754 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 13:12:53,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 13:12:53,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 13:12:53,755 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8488bc4b38d88c79bc520e9824284003ed2f71ce856a53cf11e7fc61dbeef4b [2021-11-05 13:12:53,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 13:12:54,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 13:12:54,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 13:12:54,002 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 13:12:54,003 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 13:12:54,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i [2021-11-05 13:12:54,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef348d230/9af25c8b6bf74d77a607d0fe5ac0f285/FLAG944bc08a0 [2021-11-05 13:12:54,617 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 13:12:54,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i [2021-11-05 13:12:54,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef348d230/9af25c8b6bf74d77a607d0fe5ac0f285/FLAG944bc08a0 [2021-11-05 13:12:55,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef348d230/9af25c8b6bf74d77a607d0fe5ac0f285 [2021-11-05 13:12:55,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 13:12:55,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 13:12:55,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 13:12:55,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 13:12:55,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 13:12:55,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:12:55" (1/1) ... [2021-11-05 13:12:55,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d4f554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:55, skipping insertion in model container [2021-11-05 13:12:55,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:12:55" (1/1) ... [2021-11-05 13:12:55,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 13:12:55,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 13:12:55,318 WARN L228 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_linked_list_begin_harness.i[4495,4508] [2021-11-05 13:12:55,325 WARN L228 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_linked_list_begin_harness.i[4555,4568] [2021-11-05 13:12:55,337 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:12:55,343 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:12:55,738 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:55,738 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:55,739 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:55,739 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:55,740 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:55,747 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:55,748 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:55,749 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:55,749 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:55,750 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:55,751 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:55,751 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:55,751 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:55,919 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:12:55,920 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:12:55,920 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:12:55,921 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:12:55,922 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:12:55,923 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:12:55,923 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:12:55,924 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:12:55,924 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:12:55,924 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:12:56,028 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:12:56,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:12:56,068 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 13:12:56,085 WARN L228 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_linked_list_begin_harness.i[4495,4508] [2021-11-05 13:12:56,086 WARN L228 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_linked_list_begin_harness.i[4555,4568] [2021-11-05 13:12:56,088 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:12:56,088 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:12:56,136 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:56,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:56,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:56,138 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:56,138 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:56,159 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:56,163 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:56,163 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:56,164 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:56,165 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:56,165 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:56,165 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:56,165 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:56,183 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:12:56,184 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:12:56,185 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:12:56,185 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:12:56,186 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:12:56,186 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:12:56,186 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:12:56,187 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:12:56,187 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:12:56,187 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:12:56,199 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:12:56,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:12:56,362 INFO L208 MainTranslator]: Completed translation [2021-11-05 13:12:56,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:56 WrapperNode [2021-11-05 13:12:56,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 13:12:56,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 13:12:56,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 13:12:56,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 13:12:56,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:56" (1/1) ... [2021-11-05 13:12:56,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:56" (1/1) ... [2021-11-05 13:12:56,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 13:12:56,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 13:12:56,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 13:12:56,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 13:12:56,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:56" (1/1) ... [2021-11-05 13:12:56,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:56" (1/1) ... [2021-11-05 13:12:56,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:56" (1/1) ... [2021-11-05 13:12:56,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:56" (1/1) ... [2021-11-05 13:12:56,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:56" (1/1) ... [2021-11-05 13:12:56,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:56" (1/1) ... [2021-11-05 13:12:56,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:56" (1/1) ... [2021-11-05 13:12:56,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 13:12:56,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 13:12:56,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 13:12:56,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 13:12:56,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:56" (1/1) ... [2021-11-05 13:12:56,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:12:56,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:12:56,536 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) [2021-11-05 13:12:56,555 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 [2021-11-05 13:12:56,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 13:12:56,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 13:12:56,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 13:12:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 13:12:56,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 13:12:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 13:12:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 13:12:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 13:12:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 13:12:57,070 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 13:12:57,070 INFO L299 CfgBuilder]: Removed 55 assume(true) statements. [2021-11-05 13:12:57,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:12:57 BoogieIcfgContainer [2021-11-05 13:12:57,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 13:12:57,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 13:12:57,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 13:12:57,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 13:12:57,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 01:12:55" (1/3) ... [2021-11-05 13:12:57,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572d891a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:12:57, skipping insertion in model container [2021-11-05 13:12:57,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:56" (2/3) ... [2021-11-05 13:12:57,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572d891a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:12:57, skipping insertion in model container [2021-11-05 13:12:57,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:12:57" (3/3) ... [2021-11-05 13:12:57,077 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_begin_harness.i [2021-11-05 13:12:57,080 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 13:12:57,080 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-05 13:12:57,115 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 13:12:57,120 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 [2021-11-05 13:12:57,120 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-05 13:12:57,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 113 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:57,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-05 13:12:57,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:57,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:57,134 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:57,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:57,138 INFO L85 PathProgramCache]: Analyzing trace with hash -122732205, now seen corresponding path program 1 times [2021-11-05 13:12:57,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:57,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019603039] [2021-11-05 13:12:57,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:57,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:57,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:57,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:57,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019603039] [2021-11-05 13:12:57,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019603039] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:57,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:57,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 13:12:57,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40034559] [2021-11-05 13:12:57,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:57,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 13:12:57,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:57,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 13:12:57,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:12:57,347 INFO L87 Difference]: Start difference. First operand has 114 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 113 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:57,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:57,375 INFO L93 Difference]: Finished difference Result 224 states and 335 transitions. [2021-11-05 13:12:57,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 13:12:57,386 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-05 13:12:57,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:57,394 INFO L225 Difference]: With dead ends: 224 [2021-11-05 13:12:57,394 INFO L226 Difference]: Without dead ends: 109 [2021-11-05 13:12:57,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:12:57,399 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:57,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 2.48ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 13:12:57,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-05 13:12:57,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-05 13:12:57,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.457142857142857) internal successors, (153), 108 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:57,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 153 transitions. [2021-11-05 13:12:57,462 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 153 transitions. Word has length 41 [2021-11-05 13:12:57,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:57,465 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 153 transitions. [2021-11-05 13:12:57,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:57,466 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 153 transitions. [2021-11-05 13:12:57,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-05 13:12:57,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:57,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:57,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 13:12:57,470 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:57,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:57,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1738897517, now seen corresponding path program 1 times [2021-11-05 13:12:57,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:57,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760493998] [2021-11-05 13:12:57,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:57,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:57,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:57,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760493998] [2021-11-05 13:12:57,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760493998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:57,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:57,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:12:57,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031461920] [2021-11-05 13:12:57,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:57,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:12:57,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:57,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:12:57,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:12:57,598 INFO L87 Difference]: Start difference. First operand 109 states and 153 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:57,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:57,651 INFO L93 Difference]: Finished difference Result 208 states and 294 transitions. [2021-11-05 13:12:57,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:12:57,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-05 13:12:57,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:57,658 INFO L225 Difference]: With dead ends: 208 [2021-11-05 13:12:57,658 INFO L226 Difference]: Without dead ends: 109 [2021-11-05 13:12:57,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.82ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:12:57,660 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 140 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.94ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.14ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:57,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 272 Invalid, 33 Unknown, 0 Unchecked, 2.94ms Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 31.14ms Time] [2021-11-05 13:12:57,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-05 13:12:57,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-05 13:12:57,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.4285714285714286) internal successors, (150), 108 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 150 transitions. [2021-11-05 13:12:57,667 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 150 transitions. Word has length 41 [2021-11-05 13:12:57,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:57,679 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 150 transitions. [2021-11-05 13:12:57,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:57,679 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 150 transitions. [2021-11-05 13:12:57,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-05 13:12:57,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:57,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:57,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 13:12:57,680 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:57,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:57,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1666510959, now seen corresponding path program 1 times [2021-11-05 13:12:57,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:57,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734507025] [2021-11-05 13:12:57,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:57,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:57,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:57,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734507025] [2021-11-05 13:12:57,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734507025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:57,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:57,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:12:57,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092126549] [2021-11-05 13:12:57,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:57,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:12:57,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:57,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:12:57,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:12:57,785 INFO L87 Difference]: Start difference. First operand 109 states and 150 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:57,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:57,846 INFO L93 Difference]: Finished difference Result 210 states and 280 transitions. [2021-11-05 13:12:57,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:12:57,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-05 13:12:57,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:57,848 INFO L225 Difference]: With dead ends: 210 [2021-11-05 13:12:57,849 INFO L226 Difference]: Without dead ends: 127 [2021-11-05 13:12:57,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.74ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:12:57,851 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 18 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.73ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.82ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:57,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 422 Invalid, 29 Unknown, 0 Unchecked, 1.73ms Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 46.82ms Time] [2021-11-05 13:12:57,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-05 13:12:57,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 109. [2021-11-05 13:12:57,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 108 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:57,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 148 transitions. [2021-11-05 13:12:57,860 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 148 transitions. Word has length 41 [2021-11-05 13:12:57,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:57,860 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 148 transitions. [2021-11-05 13:12:57,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:57,860 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 148 transitions. [2021-11-05 13:12:57,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-05 13:12:57,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:57,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:57,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 13:12:57,862 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:57,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:57,862 INFO L85 PathProgramCache]: Analyzing trace with hash -423042159, now seen corresponding path program 1 times [2021-11-05 13:12:57,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:57,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718334599] [2021-11-05 13:12:57,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:57,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:57,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:57,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:57,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718334599] [2021-11-05 13:12:57,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718334599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:57,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:57,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:12:57,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613060955] [2021-11-05 13:12:57,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:57,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:12:57,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:57,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:12:57,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:12:57,925 INFO L87 Difference]: Start difference. First operand 109 states and 148 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:57,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:57,993 INFO L93 Difference]: Finished difference Result 217 states and 288 transitions. [2021-11-05 13:12:57,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:12:57,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-05 13:12:57,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:57,997 INFO L225 Difference]: With dead ends: 217 [2021-11-05 13:12:57,997 INFO L226 Difference]: Without dead ends: 135 [2021-11-05 13:12:57,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 18.87ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:12:58,000 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 362 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.49ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.25ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:58,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 214 Invalid, 65 Unknown, 0 Unchecked, 1.49ms Time], IncrementalHoareTripleChecker [14 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 44.25ms Time] [2021-11-05 13:12:58,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-05 13:12:58,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2021-11-05 13:12:58,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.380952380952381) internal successors, (145), 108 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:58,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 145 transitions. [2021-11-05 13:12:58,017 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 145 transitions. Word has length 45 [2021-11-05 13:12:58,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:58,017 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 145 transitions. [2021-11-05 13:12:58,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:58,018 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 145 transitions. [2021-11-05 13:12:58,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-05 13:12:58,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:58,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:58,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 13:12:58,023 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:58,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:58,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2072078671, now seen corresponding path program 1 times [2021-11-05 13:12:58,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:58,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865128662] [2021-11-05 13:12:58,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:58,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:58,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:58,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865128662] [2021-11-05 13:12:58,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865128662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:58,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:58,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:12:58,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240023587] [2021-11-05 13:12:58,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:58,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:12:58,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:58,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:12:58,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:12:58,130 INFO L87 Difference]: Start difference. First operand 109 states and 145 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:58,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:58,276 INFO L93 Difference]: Finished difference Result 296 states and 388 transitions. [2021-11-05 13:12:58,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:12:58,276 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-05 13:12:58,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:58,277 INFO L225 Difference]: With dead ends: 296 [2021-11-05 13:12:58,277 INFO L226 Difference]: Without dead ends: 213 [2021-11-05 13:12:58,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 37.94ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-05 13:12:58,278 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 670 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.80ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.55ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:58,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [670 Valid, 331 Invalid, 136 Unknown, 0 Unchecked, 1.80ms Time], IncrementalHoareTripleChecker [35 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 95.55ms Time] [2021-11-05 13:12:58,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-05 13:12:58,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 112. [2021-11-05 13:12:58,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 108 states have (on average 1.3703703703703705) internal successors, (148), 111 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:58,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 148 transitions. [2021-11-05 13:12:58,284 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 148 transitions. Word has length 49 [2021-11-05 13:12:58,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:58,284 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 148 transitions. [2021-11-05 13:12:58,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:58,285 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 148 transitions. [2021-11-05 13:12:58,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 13:12:58,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:58,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:58,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 13:12:58,286 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:58,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:58,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1006498608, now seen corresponding path program 1 times [2021-11-05 13:12:58,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:58,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743066023] [2021-11-05 13:12:58,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:58,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:58,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:58,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:58,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743066023] [2021-11-05 13:12:58,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743066023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:58,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:58,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:12:58,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686968308] [2021-11-05 13:12:58,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:58,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:12:58,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:58,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:12:58,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:12:58,350 INFO L87 Difference]: Start difference. First operand 112 states and 148 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:58,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:58,466 INFO L93 Difference]: Finished difference Result 299 states and 388 transitions. [2021-11-05 13:12:58,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:12:58,466 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-05 13:12:58,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:58,467 INFO L225 Difference]: With dead ends: 299 [2021-11-05 13:12:58,467 INFO L226 Difference]: Without dead ends: 214 [2021-11-05 13:12:58,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 33.53ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-05 13:12:58,468 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 606 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.70ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.76ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:58,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 308 Invalid, 134 Unknown, 0 Unchecked, 1.70ms Time], IncrementalHoareTripleChecker [39 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 80.76ms Time] [2021-11-05 13:12:58,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-05 13:12:58,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 115. [2021-11-05 13:12:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 111 states have (on average 1.3603603603603605) internal successors, (151), 114 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 151 transitions. [2021-11-05 13:12:58,473 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 151 transitions. Word has length 51 [2021-11-05 13:12:58,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:58,473 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 151 transitions. [2021-11-05 13:12:58,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:58,474 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 151 transitions. [2021-11-05 13:12:58,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-05 13:12:58,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:58,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:58,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 13:12:58,475 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:58,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:58,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1179077135, now seen corresponding path program 1 times [2021-11-05 13:12:58,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:58,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146716511] [2021-11-05 13:12:58,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:58,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:58,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:58,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:58,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146716511] [2021-11-05 13:12:58,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146716511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:58,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:58,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:12:58,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271248452] [2021-11-05 13:12:58,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:58,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:12:58,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:58,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:12:58,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:12:58,532 INFO L87 Difference]: Start difference. First operand 115 states and 151 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:58,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:58,578 INFO L93 Difference]: Finished difference Result 226 states and 298 transitions. [2021-11-05 13:12:58,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:12:58,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-05 13:12:58,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:58,579 INFO L225 Difference]: With dead ends: 226 [2021-11-05 13:12:58,579 INFO L226 Difference]: Without dead ends: 131 [2021-11-05 13:12:58,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.68ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:12:58,580 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 9 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.05ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.75ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:58,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 392 Invalid, 72 Unknown, 0 Unchecked, 1.05ms Time], IncrementalHoareTripleChecker [13 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 36.75ms Time] [2021-11-05 13:12:58,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-05 13:12:58,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 123. [2021-11-05 13:12:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 119 states have (on average 1.3361344537815125) internal successors, (159), 122 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 159 transitions. [2021-11-05 13:12:58,585 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 159 transitions. Word has length 61 [2021-11-05 13:12:58,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:58,586 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 159 transitions. [2021-11-05 13:12:58,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:58,588 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 159 transitions. [2021-11-05 13:12:58,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-05 13:12:58,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:58,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:58,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 13:12:58,591 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:58,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:58,592 INFO L85 PathProgramCache]: Analyzing trace with hash -192730163, now seen corresponding path program 1 times [2021-11-05 13:12:58,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:58,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804646334] [2021-11-05 13:12:58,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:58,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:58,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:58,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804646334] [2021-11-05 13:12:58,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804646334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:58,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:58,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:12:58,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683206924] [2021-11-05 13:12:58,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:58,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:12:58,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:58,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:12:58,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:12:58,690 INFO L87 Difference]: Start difference. First operand 123 states and 159 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:58,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:58,843 INFO L93 Difference]: Finished difference Result 324 states and 415 transitions. [2021-11-05 13:12:58,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 13:12:58,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-05 13:12:58,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:58,845 INFO L225 Difference]: With dead ends: 324 [2021-11-05 13:12:58,845 INFO L226 Difference]: Without dead ends: 221 [2021-11-05 13:12:58,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 49.97ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-05 13:12:58,846 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 624 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.07ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106.71ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:58,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 428 Invalid, 204 Unknown, 0 Unchecked, 2.07ms Time], IncrementalHoareTripleChecker [49 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 106.71ms Time] [2021-11-05 13:12:58,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-05 13:12:58,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 126. [2021-11-05 13:12:58,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 122 states have (on average 1.3278688524590163) internal successors, (162), 125 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:58,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 162 transitions. [2021-11-05 13:12:58,851 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 162 transitions. Word has length 61 [2021-11-05 13:12:58,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:58,851 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 162 transitions. [2021-11-05 13:12:58,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:58,852 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 162 transitions. [2021-11-05 13:12:58,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-05 13:12:58,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:58,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:58,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 13:12:58,853 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:58,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:58,854 INFO L85 PathProgramCache]: Analyzing trace with hash 930930641, now seen corresponding path program 1 times [2021-11-05 13:12:58,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:58,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148493541] [2021-11-05 13:12:58,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:58,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:58,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:58,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148493541] [2021-11-05 13:12:58,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148493541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:58,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:58,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:12:58,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485155872] [2021-11-05 13:12:58,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:58,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:12:58,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:58,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:12:58,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:12:58,912 INFO L87 Difference]: Start difference. First operand 126 states and 162 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:58,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:58,958 INFO L93 Difference]: Finished difference Result 269 states and 334 transitions. [2021-11-05 13:12:58,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:12:58,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-05 13:12:58,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:58,959 INFO L225 Difference]: With dead ends: 269 [2021-11-05 13:12:58,959 INFO L226 Difference]: Without dead ends: 172 [2021-11-05 13:12:58,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.97ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:12:58,960 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 52 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.76ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.09ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:58,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 592 Invalid, 63 Unknown, 0 Unchecked, 0.76ms Time], IncrementalHoareTripleChecker [11 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 31.09ms Time] [2021-11-05 13:12:58,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-05 13:12:58,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 126. [2021-11-05 13:12:58,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 122 states have (on average 1.3114754098360655) internal successors, (160), 125 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:58,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 160 transitions. [2021-11-05 13:12:58,964 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 160 transitions. Word has length 61 [2021-11-05 13:12:58,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:58,964 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 160 transitions. [2021-11-05 13:12:58,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:58,965 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 160 transitions. [2021-11-05 13:12:58,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-05 13:12:58,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:58,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:58,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 13:12:58,965 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:58,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:58,966 INFO L85 PathProgramCache]: Analyzing trace with hash -961072015, now seen corresponding path program 1 times [2021-11-05 13:12:58,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:58,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659978718] [2021-11-05 13:12:58,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:58,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:59,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 13:12:59,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:59,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659978718] [2021-11-05 13:12:59,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659978718] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:12:59,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023583658] [2021-11-05 13:12:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:59,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:12:59,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:12:59,076 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) [2021-11-05 13:12:59,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 13:12:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:59,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-05 13:12:59,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:12:59,346 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:12:59,347 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 1 case distinctions, treesize of input 63 treesize of output 50 [2021-11-05 13:12:59,363 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-05 13:12:59,364 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 1 case distinctions, treesize of input 71 treesize of output 54 [2021-11-05 13:13:02,161 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-11-05 13:13:02,162 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 89 [2021-11-05 13:13:02,181 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:13:02,182 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 89 [2021-11-05 13:13:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 13:13:02,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 13:13:02,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 13:13:02,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023583658] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 13:13:02,407 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 13:13:02,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 16 [2021-11-05 13:13:02,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640017394] [2021-11-05 13:13:02,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 13:13:02,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 13:13:02,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:13:02,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 13:13:02,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-05 13:13:02,409 INFO L87 Difference]: Start difference. First operand 126 states and 160 transitions. Second operand has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:02,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:13:02,540 INFO L93 Difference]: Finished difference Result 280 states and 353 transitions. [2021-11-05 13:13:02,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 13:13:02,541 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-05 13:13:02,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:13:02,543 INFO L225 Difference]: With dead ends: 280 [2021-11-05 13:13:02,543 INFO L226 Difference]: Without dead ends: 185 [2021-11-05 13:13:02,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2139.27ms TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-05 13:13:02,544 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 96 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.18ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 266 IncrementalHoareTripleChecker+Unchecked, 106.55ms IncrementalHoareTripleChecker+Time [2021-11-05 13:13:02,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 1530 Invalid, 436 Unknown, 0 Unchecked, 2.18ms Time], IncrementalHoareTripleChecker [7 Valid, 163 Invalid, 0 Unknown, 266 Unchecked, 106.55ms Time] [2021-11-05 13:13:02,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-05 13:13:02,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 142. [2021-11-05 13:13:02,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 138 states have (on average 1.2971014492753623) internal successors, (179), 141 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:02,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 179 transitions. [2021-11-05 13:13:02,549 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 179 transitions. Word has length 65 [2021-11-05 13:13:02,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:13:02,549 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 179 transitions. [2021-11-05 13:13:02,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:02,549 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 179 transitions. [2021-11-05 13:13:02,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-05 13:13:02,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:13:02,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:13:02,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 13:13:02,768 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,SelfDestructingSolverStorable9 [2021-11-05 13:13:02,768 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:13:02,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:13:02,768 INFO L85 PathProgramCache]: Analyzing trace with hash 425713395, now seen corresponding path program 1 times [2021-11-05 13:13:02,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:13:02,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870210427] [2021-11-05 13:13:02,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:13:02,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:13:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:13:02,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:13:02,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:13:02,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870210427] [2021-11-05 13:13:02,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870210427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:13:02,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:13:02,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:13:02,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161446502] [2021-11-05 13:13:02,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:13:02,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:13:02,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:13:02,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:13:02,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:13:02,799 INFO L87 Difference]: Start difference. First operand 142 states and 179 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:02,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:13:02,849 INFO L93 Difference]: Finished difference Result 282 states and 364 transitions. [2021-11-05 13:13:02,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:13:02,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-05 13:13:02,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:13:02,852 INFO L225 Difference]: With dead ends: 282 [2021-11-05 13:13:02,852 INFO L226 Difference]: Without dead ends: 169 [2021-11-05 13:13:02,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.29ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:13:02,852 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 32 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.63ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.23ms IncrementalHoareTripleChecker+Time [2021-11-05 13:13:02,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 413 Invalid, 101 Unknown, 0 Unchecked, 0.63ms Time], IncrementalHoareTripleChecker [13 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 42.23ms Time] [2021-11-05 13:13:02,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-05 13:13:02,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 148. [2021-11-05 13:13:02,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 144 states have (on average 1.2777777777777777) internal successors, (184), 147 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:02,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 184 transitions. [2021-11-05 13:13:02,857 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 184 transitions. Word has length 65 [2021-11-05 13:13:02,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:13:02,858 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 184 transitions. [2021-11-05 13:13:02,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:02,858 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 184 transitions. [2021-11-05 13:13:02,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-05 13:13:02,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:13:02,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:13:02,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 13:13:02,859 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:13:02,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:13:02,859 INFO L85 PathProgramCache]: Analyzing trace with hash 869614069, now seen corresponding path program 1 times [2021-11-05 13:13:02,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:13:02,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476420070] [2021-11-05 13:13:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:13:02,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:13:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:13:02,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:13:02,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:13:02,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476420070] [2021-11-05 13:13:02,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476420070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:13:02,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:13:02,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:13:02,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570498104] [2021-11-05 13:13:02,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:13:02,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:13:02,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:13:02,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:13:02,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:13:02,947 INFO L87 Difference]: Start difference. First operand 148 states and 184 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:03,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:13:03,155 INFO L93 Difference]: Finished difference Result 258 states and 325 transitions. [2021-11-05 13:13:03,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:13:03,156 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-05 13:13:03,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:13:03,157 INFO L225 Difference]: With dead ends: 258 [2021-11-05 13:13:03,157 INFO L226 Difference]: Without dead ends: 137 [2021-11-05 13:13:03,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 80.45ms TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-05 13:13:03,157 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 342 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 140.46ms IncrementalHoareTripleChecker+Time [2021-11-05 13:13:03,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 406 Invalid, 246 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [52 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 140.46ms Time] [2021-11-05 13:13:03,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-05 13:13:03,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2021-11-05 13:13:03,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 131 states have (on average 1.2748091603053435) internal successors, (167), 134 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:03,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 167 transitions. [2021-11-05 13:13:03,162 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 167 transitions. Word has length 65 [2021-11-05 13:13:03,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:13:03,162 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 167 transitions. [2021-11-05 13:13:03,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:03,162 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 167 transitions. [2021-11-05 13:13:03,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-05 13:13:03,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:13:03,163 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:13:03,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 13:13:03,163 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:13:03,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:13:03,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1157655543, now seen corresponding path program 1 times [2021-11-05 13:13:03,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:13:03,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411721329] [2021-11-05 13:13:03,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:13:03,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:13:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:13:03,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:13:03,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:13:03,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411721329] [2021-11-05 13:13:03,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411721329] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:13:03,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850772330] [2021-11-05 13:13:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:13:03,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:13:03,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:13:03,285 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) [2021-11-05 13:13:03,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 13:13:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:13:03,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-05 13:13:03,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:13:03,441 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:13:03,441 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 1 case distinctions, treesize of input 63 treesize of output 50 [2021-11-05 13:13:03,463 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-05 13:13:03,464 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 1 case distinctions, treesize of input 71 treesize of output 54 [2021-11-05 13:13:05,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 13:13:05,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:13:05,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850772330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:13:05,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 13:13:05,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2021-11-05 13:13:05,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216993185] [2021-11-05 13:13:05,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:13:05,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 13:13:05,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:13:05,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 13:13:05,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-11-05 13:13:05,238 INFO L87 Difference]: Start difference. First operand 135 states and 167 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:05,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:13:05,276 INFO L93 Difference]: Finished difference Result 246 states and 302 transitions. [2021-11-05 13:13:05,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:13:05,277 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-05 13:13:05,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:13:05,278 INFO L225 Difference]: With dead ends: 246 [2021-11-05 13:13:05,278 INFO L226 Difference]: Without dead ends: 204 [2021-11-05 13:13:05,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 261.76ms TimeCoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-11-05 13:13:05,279 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 35 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 12.12ms IncrementalHoareTripleChecker+Time [2021-11-05 13:13:05,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 881 Invalid, 159 Unknown, 0 Unchecked, 1.21ms Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 141 Unchecked, 12.12ms Time] [2021-11-05 13:13:05,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-05 13:13:05,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 198. [2021-11-05 13:13:05,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 194 states have (on average 1.2628865979381443) internal successors, (245), 197 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:05,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 245 transitions. [2021-11-05 13:13:05,285 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 245 transitions. Word has length 66 [2021-11-05 13:13:05,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:13:05,286 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 245 transitions. [2021-11-05 13:13:05,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:05,286 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 245 transitions. [2021-11-05 13:13:05,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-05 13:13:05,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:13:05,286 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:13:05,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 13:13:05,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-05 13:13:05,495 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:13:05,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:13:05,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1159502585, now seen corresponding path program 1 times [2021-11-05 13:13:05,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:13:05,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612512578] [2021-11-05 13:13:05,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:13:05,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:13:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:13:05,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:13:05,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:13:05,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612512578] [2021-11-05 13:13:05,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612512578] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:13:05,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577464312] [2021-11-05 13:13:05,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:13:05,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:13:05,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:13:05,619 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) [2021-11-05 13:13:05,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 13:13:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:13:05,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-05 13:13:05,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:13:05,771 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-05 13:13:05,772 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 1 case distinctions, treesize of input 16 treesize of output 17 [2021-11-05 13:13:06,234 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 41 treesize of output 29 [2021-11-05 13:13:06,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 13:13:06,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:13:06,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577464312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:13:06,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 13:13:06,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2021-11-05 13:13:06,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629819253] [2021-11-05 13:13:06,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:13:06,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 13:13:06,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:13:06,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 13:13:06,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2021-11-05 13:13:06,278 INFO L87 Difference]: Start difference. First operand 198 states and 245 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:06,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:13:06,736 INFO L93 Difference]: Finished difference Result 521 states and 652 transitions. [2021-11-05 13:13:06,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 13:13:06,736 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-05 13:13:06,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:13:06,738 INFO L225 Difference]: With dead ends: 521 [2021-11-05 13:13:06,738 INFO L226 Difference]: Without dead ends: 405 [2021-11-05 13:13:06,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 389.80ms TimeCoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2021-11-05 13:13:06,739 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 675 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 186.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.43ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 235.32ms IncrementalHoareTripleChecker+Time [2021-11-05 13:13:06,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 892 Invalid, 442 Unknown, 0 Unchecked, 3.43ms Time], IncrementalHoareTripleChecker [70 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 235.32ms Time] [2021-11-05 13:13:06,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-11-05 13:13:06,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 371. [2021-11-05 13:13:06,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 367 states have (on average 1.2534059945504088) internal successors, (460), 370 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:06,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 460 transitions. [2021-11-05 13:13:06,762 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 460 transitions. Word has length 66 [2021-11-05 13:13:06,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:13:06,762 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 460 transitions. [2021-11-05 13:13:06,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:06,763 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 460 transitions. [2021-11-05 13:13:06,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-05 13:13:06,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:13:06,764 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:13:06,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 13:13:06,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:13:06,973 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:13:06,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:13:06,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1360457349, now seen corresponding path program 1 times [2021-11-05 13:13:06,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:13:06,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017666759] [2021-11-05 13:13:06,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:13:06,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:13:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:13:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:13:07,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:13:07,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017666759] [2021-11-05 13:13:07,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017666759] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:13:07,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425188030] [2021-11-05 13:13:07,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:13:07,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:13:07,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:13:07,110 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) [2021-11-05 13:13:07,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 13:13:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:13:07,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-05 13:13:07,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:13:07,263 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-05 13:13:07,264 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 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-05 13:13:07,273 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-05 13:13:07,273 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 1 case distinctions, treesize of input 73 treesize of output 54 [2021-11-05 13:13:10,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 13:13:10,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:13:10,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425188030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:13:10,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 13:13:10,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 23 [2021-11-05 13:13:10,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615148591] [2021-11-05 13:13:10,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:13:10,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 13:13:10,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:13:10,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 13:13:10,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-11-05 13:13:10,028 INFO L87 Difference]: Start difference. First operand 371 states and 460 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:10,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:13:10,103 INFO L93 Difference]: Finished difference Result 774 states and 971 transitions. [2021-11-05 13:13:10,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 13:13:10,103 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-05 13:13:10,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:13:10,105 INFO L225 Difference]: With dead ends: 774 [2021-11-05 13:13:10,105 INFO L226 Difference]: Without dead ends: 677 [2021-11-05 13:13:10,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1396.85ms TimeCoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2021-11-05 13:13:10,117 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 62 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.32ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 28.35ms IncrementalHoareTripleChecker+Time [2021-11-05 13:13:10,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 968 Invalid, 204 Unknown, 0 Unchecked, 1.32ms Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 159 Unchecked, 28.35ms Time] [2021-11-05 13:13:10,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2021-11-05 13:13:10,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 611. [2021-11-05 13:13:10,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 607 states have (on average 1.2388797364085666) internal successors, (752), 610 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:10,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 752 transitions. [2021-11-05 13:13:10,137 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 752 transitions. Word has length 66 [2021-11-05 13:13:10,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:13:10,137 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 752 transitions. [2021-11-05 13:13:10,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:10,137 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 752 transitions. [2021-11-05 13:13:10,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-05 13:13:10,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:13:10,138 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:13:10,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-05 13:13:10,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-05 13:13:10,348 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:13:10,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:13:10,348 INFO L85 PathProgramCache]: Analyzing trace with hash -680398979, now seen corresponding path program 1 times [2021-11-05 13:13:10,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:13:10,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346119422] [2021-11-05 13:13:10,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:13:10,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:13:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:13:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:13:10,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:13:10,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346119422] [2021-11-05 13:13:10,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346119422] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:13:10,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788122188] [2021-11-05 13:13:10,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:13:10,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:13:10,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:13:10,466 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) [2021-11-05 13:13:10,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 13:13:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:13:10,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-05 13:13:10,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:13:10,607 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-05 13:13:10,607 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 1 case distinctions, treesize of input 33 treesize of output 29 [2021-11-05 13:13:21,060 WARN L230 SmtUtils]: Spent 8.43s on a formula simplification that was a NOOP. DAG size: 21 [2021-11-05 13:13:31,124 WARN L230 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-05 13:13:40,618 WARN L230 SmtUtils]: Spent 9.38s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-05 13:13:50,673 WARN L230 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-05 13:14:00,833 WARN L230 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 26 [2021-11-05 13:14:08,899 WARN L230 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 24 [2021-11-05 13:14:14,997 WARN L230 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-05 13:14:25,294 WARN L230 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-05 13:14:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 13:14:25,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 13:14:25,660 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 177 treesize of output 169 [2021-11-05 13:14:25,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 13:14:25,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788122188] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 13:14:25,752 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 13:14:25,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2021-11-05 13:14:25,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162795884] [2021-11-05 13:14:25,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 13:14:25,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-05 13:14:25,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:14:25,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-05 13:14:25,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=891, Unknown=1, NotChecked=0, Total=992 [2021-11-05 13:14:25,754 INFO L87 Difference]: Start difference. First operand 611 states and 752 transitions. Second operand has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:14:39,826 WARN L230 SmtUtils]: Spent 9.99s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-05 13:14:49,698 WARN L230 SmtUtils]: Spent 9.85s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-05 13:14:59,567 WARN L230 SmtUtils]: Spent 9.85s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-05 13:15:19,653 WARN L230 SmtUtils]: Spent 20.06s on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-11-05 13:15:29,721 WARN L230 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 34 [2021-11-05 13:15:39,775 WARN L230 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 29 [2021-11-05 13:15:47,820 WARN L230 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 30 [2021-11-05 13:15:55,882 WARN L230 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 30 [2021-11-05 13:16:05,922 WARN L230 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 30 [2021-11-05 13:16:13,989 WARN L230 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 26 [2021-11-05 13:16:14,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:16:14,130 INFO L93 Difference]: Finished difference Result 1198 states and 1485 transitions. [2021-11-05 13:16:14,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 13:16:14,131 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-05 13:16:14,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:16:14,135 INFO L225 Difference]: With dead ends: 1198 [2021-11-05 13:16:14,135 INFO L226 Difference]: Without dead ends: 1009 [2021-11-05 13:16:14,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 182581.16ms TimeCoverageRelationStatistics Valid=185, Invalid=1704, Unknown=3, NotChecked=0, Total=1892 [2021-11-05 13:16:14,138 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 102 mSDsluCounter, 2114 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 122.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.05ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 149.70ms IncrementalHoareTripleChecker+Time [2021-11-05 13:16:14,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 2234 Invalid, 421 Unknown, 0 Unchecked, 3.05ms Time], IncrementalHoareTripleChecker [1 Valid, 286 Invalid, 0 Unknown, 134 Unchecked, 149.70ms Time] [2021-11-05 13:16:14,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2021-11-05 13:16:14,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 955. [2021-11-05 13:16:14,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 951 states have (on average 1.22397476340694) internal successors, (1164), 954 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:14,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1164 transitions. [2021-11-05 13:16:14,173 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1164 transitions. Word has length 66 [2021-11-05 13:16:14,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:16:14,173 INFO L470 AbstractCegarLoop]: Abstraction has 955 states and 1164 transitions. [2021-11-05 13:16:14,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:14,174 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1164 transitions. [2021-11-05 13:16:14,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 13:16:14,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:16:14,175 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:16:14,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-05 13:16:14,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-05 13:16:14,388 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:16:14,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:16:14,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1608826358, now seen corresponding path program 1 times [2021-11-05 13:16:14,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:16:14,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031329934] [2021-11-05 13:16:14,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:16:14,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:16:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:16:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:16:14,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:16:14,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031329934] [2021-11-05 13:16:14,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031329934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:16:14,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:16:14,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 13:16:14,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518717380] [2021-11-05 13:16:14,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:16:14,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 13:16:14,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:16:14,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 13:16:14,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:16:14,417 INFO L87 Difference]: Start difference. First operand 955 states and 1164 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:14,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:16:14,449 INFO L93 Difference]: Finished difference Result 1271 states and 1554 transitions. [2021-11-05 13:16:14,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 13:16:14,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-05 13:16:14,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:16:14,451 INFO L225 Difference]: With dead ends: 1271 [2021-11-05 13:16:14,451 INFO L226 Difference]: Without dead ends: 538 [2021-11-05 13:16:14,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.04ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:16:14,453 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 0 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.27ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.75ms IncrementalHoareTripleChecker+Time [2021-11-05 13:16:14,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 257 Invalid, 27 Unknown, 0 Unchecked, 0.27ms Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 14.75ms Time] [2021-11-05 13:16:14,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-11-05 13:16:14,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 530. [2021-11-05 13:16:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 526 states have (on average 1.2110266159695817) internal successors, (637), 529 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 637 transitions. [2021-11-05 13:16:14,472 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 637 transitions. Word has length 67 [2021-11-05 13:16:14,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:16:14,472 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 637 transitions. [2021-11-05 13:16:14,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:14,472 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 637 transitions. [2021-11-05 13:16:14,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 13:16:14,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:16:14,473 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:16:14,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 13:16:14,474 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:16:14,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:16:14,475 INFO L85 PathProgramCache]: Analyzing trace with hash 33598202, now seen corresponding path program 1 times [2021-11-05 13:16:14,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:16:14,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789972138] [2021-11-05 13:16:14,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:16:14,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:16:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:16:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:16:14,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:16:14,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789972138] [2021-11-05 13:16:14,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789972138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:16:14,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:16:14,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:16:14,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63703958] [2021-11-05 13:16:14,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:16:14,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:16:14,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:16:14,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:16:14,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:16:14,516 INFO L87 Difference]: Start difference. First operand 530 states and 637 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:14,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:16:14,568 INFO L93 Difference]: Finished difference Result 752 states and 908 transitions. [2021-11-05 13:16:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:16:14,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-05 13:16:14,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:16:14,569 INFO L225 Difference]: With dead ends: 752 [2021-11-05 13:16:14,569 INFO L226 Difference]: Without dead ends: 332 [2021-11-05 13:16:14,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.35ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:16:14,570 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 7 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.37ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.96ms IncrementalHoareTripleChecker+Time [2021-11-05 13:16:14,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 366 Invalid, 64 Unknown, 0 Unchecked, 0.37ms Time], IncrementalHoareTripleChecker [11 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 31.96ms Time] [2021-11-05 13:16:14,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-11-05 13:16:14,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 330. [2021-11-05 13:16:14,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 326 states have (on average 1.196319018404908) internal successors, (390), 329 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:14,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 390 transitions. [2021-11-05 13:16:14,582 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 390 transitions. Word has length 67 [2021-11-05 13:16:14,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:16:14,582 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 390 transitions. [2021-11-05 13:16:14,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:14,583 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 390 transitions. [2021-11-05 13:16:14,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-05 13:16:14,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:16:14,585 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:16:14,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 13:16:14,586 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:16:14,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:16:14,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1384277337, now seen corresponding path program 1 times [2021-11-05 13:16:14,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:16:14,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039877492] [2021-11-05 13:16:14,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:16:14,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:16:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:16:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:16:14,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:16:14,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039877492] [2021-11-05 13:16:14,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039877492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:16:14,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:16:14,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:16:14,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574653396] [2021-11-05 13:16:14,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:16:14,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:16:14,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:16:14,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:16:14,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:16:14,662 INFO L87 Difference]: Start difference. First operand 330 states and 390 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:14,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:16:14,735 INFO L93 Difference]: Finished difference Result 392 states and 463 transitions. [2021-11-05 13:16:14,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:16:14,736 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-05 13:16:14,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:16:14,737 INFO L225 Difference]: With dead ends: 392 [2021-11-05 13:16:14,737 INFO L226 Difference]: Without dead ends: 330 [2021-11-05 13:16:14,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.46ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 13:16:14,738 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 395 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.51ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.01ms IncrementalHoareTripleChecker+Time [2021-11-05 13:16:14,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 145 Invalid, 74 Unknown, 0 Unchecked, 0.51ms Time], IncrementalHoareTripleChecker [22 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 42.01ms Time] [2021-11-05 13:16:14,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-11-05 13:16:14,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2021-11-05 13:16:14,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 326 states have (on average 1.1901840490797546) internal successors, (388), 329 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:14,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 388 transitions. [2021-11-05 13:16:14,750 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 388 transitions. Word has length 69 [2021-11-05 13:16:14,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:16:14,751 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 388 transitions. [2021-11-05 13:16:14,751 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:14,751 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 388 transitions. [2021-11-05 13:16:14,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-05 13:16:14,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:16:14,752 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:16:14,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 13:16:14,752 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:16:14,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:16:14,753 INFO L85 PathProgramCache]: Analyzing trace with hash 80619544, now seen corresponding path program 1 times [2021-11-05 13:16:14,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:16:14,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259400865] [2021-11-05 13:16:14,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:16:14,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:16:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:16:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:16:14,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:16:14,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259400865] [2021-11-05 13:16:14,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259400865] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:16:14,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340085582] [2021-11-05 13:16:14,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:16:14,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:16:14,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:16:14,939 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) [2021-11-05 13:16:14,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 13:16:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:16:15,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-05 13:16:15,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:16:15,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:16:15,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 13:16:15,137 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 27 treesize of output 15 [2021-11-05 13:16:15,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:16:15,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:16:15,215 INFO L354 Elim1Store]: treesize reduction 68, result has 29.2 percent of original size [2021-11-05 13:16:15,215 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 4 case distinctions, treesize of input 53 treesize of output 48 [2021-11-05 13:16:15,849 INFO L354 Elim1Store]: treesize reduction 36, result has 25.0 percent of original size [2021-11-05 13:16:15,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 36 [2021-11-05 13:16:15,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:16:15,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 13:16:17,068 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0.offset Int)) (not (= (+ |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0.offset| 16) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0.base) ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0.offset (+ 16 c_ULTIMATE.start_ensure_linked_list_is_allocated_~list.offset))))) (store .cse0 c_ULTIMATE.start_ensure_linked_list_is_allocated_~list.base (store (select .cse0 c_ULTIMATE.start_ensure_linked_list_is_allocated_~list.base) (+ c_ULTIMATE.start_ensure_linked_list_is_allocated_~list.offset 24) ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0.offset))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0.base|) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0.offset|)))) is different from false [2021-11-05 13:16:17,099 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 6546 treesize of output 6482 [2021-11-05 13:16:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2021-11-05 13:16:17,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340085582] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 13:16:17,937 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 13:16:17,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2021-11-05 13:16:17,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458341730] [2021-11-05 13:16:17,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 13:16:17,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-05 13:16:17,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:16:17,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-05 13:16:17,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=540, Unknown=1, NotChecked=46, Total=650 [2021-11-05 13:16:17,939 INFO L87 Difference]: Start difference. First operand 330 states and 388 transitions. Second operand has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:19,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:16:19,751 INFO L93 Difference]: Finished difference Result 587 states and 689 transitions. [2021-11-05 13:16:19,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 13:16:19,752 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-05 13:16:19,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:16:19,753 INFO L225 Difference]: With dead ends: 587 [2021-11-05 13:16:19,753 INFO L226 Difference]: Without dead ends: 458 [2021-11-05 13:16:19,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 2660.55ms TimeCoverageRelationStatistics Valid=173, Invalid=1311, Unknown=2, NotChecked=74, Total=1560 [2021-11-05 13:16:19,754 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 849 mSDsluCounter, 2367 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 344.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.15ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 530 IncrementalHoareTripleChecker+Unchecked, 411.62ms IncrementalHoareTripleChecker+Time [2021-11-05 13:16:19,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 2522 Invalid, 1399 Unknown, 0 Unchecked, 8.15ms Time], IncrementalHoareTripleChecker [46 Valid, 823 Invalid, 0 Unknown, 530 Unchecked, 411.62ms Time] [2021-11-05 13:16:19,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-05 13:16:19,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 291. [2021-11-05 13:16:19,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 287 states have (on average 1.1916376306620209) internal successors, (342), 290 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:19,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 342 transitions. [2021-11-05 13:16:19,768 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 342 transitions. Word has length 69 [2021-11-05 13:16:19,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:16:19,768 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 342 transitions. [2021-11-05 13:16:19,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:19,768 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 342 transitions. [2021-11-05 13:16:19,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-05 13:16:19,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:16:19,769 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:16:19,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-05 13:16:19,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:16:19,980 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:16:19,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:16:19,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1868731461, now seen corresponding path program 1 times [2021-11-05 13:16:19,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:16:19,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180033573] [2021-11-05 13:16:19,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:16:19,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:16:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:16:20,018 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:16:20,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:16:20,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180033573] [2021-11-05 13:16:20,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180033573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:16:20,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:16:20,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:16:20,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874702912] [2021-11-05 13:16:20,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:16:20,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:16:20,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:16:20,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:16:20,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:16:20,020 INFO L87 Difference]: Start difference. First operand 291 states and 342 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:20,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:16:20,082 INFO L93 Difference]: Finished difference Result 613 states and 719 transitions. [2021-11-05 13:16:20,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:16:20,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-05 13:16:20,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:16:20,083 INFO L225 Difference]: With dead ends: 613 [2021-11-05 13:16:20,083 INFO L226 Difference]: Without dead ends: 395 [2021-11-05 13:16:20,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.49ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:16:20,084 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 93 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.54ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.76ms IncrementalHoareTripleChecker+Time [2021-11-05 13:16:20,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 361 Invalid, 74 Unknown, 0 Unchecked, 0.54ms Time], IncrementalHoareTripleChecker [17 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 39.76ms Time] [2021-11-05 13:16:20,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-05 13:16:20,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 272. [2021-11-05 13:16:20,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 268 states have (on average 1.1753731343283582) internal successors, (315), 271 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:20,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 315 transitions. [2021-11-05 13:16:20,111 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 315 transitions. Word has length 73 [2021-11-05 13:16:20,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:16:20,111 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 315 transitions. [2021-11-05 13:16:20,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:20,111 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 315 transitions. [2021-11-05 13:16:20,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-05 13:16:20,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:16:20,112 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:16:20,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-05 13:16:20,112 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:16:20,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:16:20,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1989846601, now seen corresponding path program 1 times [2021-11-05 13:16:20,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:16:20,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806722005] [2021-11-05 13:16:20,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:16:20,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:16:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:16:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 13:16:20,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:16:20,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806722005] [2021-11-05 13:16:20,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806722005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:16:20,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:16:20,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:16:20,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269923231] [2021-11-05 13:16:20,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:16:20,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:16:20,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:16:20,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:16:20,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:16:20,243 INFO L87 Difference]: Start difference. First operand 272 states and 315 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:20,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:16:20,539 INFO L93 Difference]: Finished difference Result 705 states and 809 transitions. [2021-11-05 13:16:20,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:16:20,543 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-05 13:16:20,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:16:20,545 INFO L225 Difference]: With dead ends: 705 [2021-11-05 13:16:20,545 INFO L226 Difference]: Without dead ends: 530 [2021-11-05 13:16:20,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 115.82ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-05 13:16:20,546 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 317 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 149.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.71ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 180.76ms IncrementalHoareTripleChecker+Time [2021-11-05 13:16:20,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 673 Invalid, 351 Unknown, 0 Unchecked, 1.71ms Time], IncrementalHoareTripleChecker [50 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 180.76ms Time] [2021-11-05 13:16:20,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-11-05 13:16:20,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 300. [2021-11-05 13:16:20,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 296 states have (on average 1.1689189189189189) internal successors, (346), 299 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 346 transitions. [2021-11-05 13:16:20,570 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 346 transitions. Word has length 73 [2021-11-05 13:16:20,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:16:20,570 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 346 transitions. [2021-11-05 13:16:20,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:20,574 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 346 transitions. [2021-11-05 13:16:20,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-05 13:16:20,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:16:20,575 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:16:20,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-05 13:16:20,575 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:16:20,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:16:20,576 INFO L85 PathProgramCache]: Analyzing trace with hash 363160585, now seen corresponding path program 1 times [2021-11-05 13:16:20,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:16:20,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679259494] [2021-11-05 13:16:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:16:20,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:16:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:16:20,704 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:16:20,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:16:20,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679259494] [2021-11-05 13:16:20,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679259494] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:16:20,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134184132] [2021-11-05 13:16:20,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:16:20,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:16:20,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:16:20,706 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) [2021-11-05 13:16:20,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-05 13:16:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:16:20,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-05 13:16:20,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:16:20,860 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-05 13:16:20,860 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 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-05 13:16:20,869 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-05 13:16:20,869 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 1 case distinctions, treesize of input 73 treesize of output 54 [2021-11-05 13:16:22,779 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-11-05 13:16:22,780 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 92 [2021-11-05 13:16:22,795 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:16:22,796 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 95 [2021-11-05 13:16:22,955 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-05 13:16:22,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:16:22,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134184132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:16:22,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 13:16:22,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2021-11-05 13:16:22,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573066378] [2021-11-05 13:16:22,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:16:22,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 13:16:22,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:16:22,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 13:16:22,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-11-05 13:16:22,957 INFO L87 Difference]: Start difference. First operand 300 states and 346 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:23,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:16:23,049 INFO L93 Difference]: Finished difference Result 446 states and 517 transitions. [2021-11-05 13:16:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 13:16:23,049 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-05 13:16:23,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:16:23,051 INFO L225 Difference]: With dead ends: 446 [2021-11-05 13:16:23,051 INFO L226 Difference]: Without dead ends: 375 [2021-11-05 13:16:23,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 334.27ms TimeCoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2021-11-05 13:16:23,052 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 37 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.94ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 219 IncrementalHoareTripleChecker+Unchecked, 35.78ms IncrementalHoareTripleChecker+Time [2021-11-05 13:16:23,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 1080 Invalid, 261 Unknown, 0 Unchecked, 0.94ms Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 219 Unchecked, 35.78ms Time] [2021-11-05 13:16:23,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-05 13:16:23,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 324. [2021-11-05 13:16:23,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 320 states have (on average 1.178125) internal successors, (377), 323 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:23,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 377 transitions. [2021-11-05 13:16:23,068 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 377 transitions. Word has length 73 [2021-11-05 13:16:23,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:16:23,068 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 377 transitions. [2021-11-05 13:16:23,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:23,068 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 377 transitions. [2021-11-05 13:16:23,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-05 13:16:23,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:16:23,069 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:16:23,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-05 13:16:23,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:16:23,274 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:16:23,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:16:23,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1393591856, now seen corresponding path program 1 times [2021-11-05 13:16:23,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:16:23,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408572584] [2021-11-05 13:16:23,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:16:23,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:16:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:16:23,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 13:16:23,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:16:23,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408572584] [2021-11-05 13:16:23,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408572584] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:16:23,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304907139] [2021-11-05 13:16:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:16:23,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:16:23,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:16:23,416 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) [2021-11-05 13:16:23,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-05 13:16:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:16:23,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 81 conjunts are in the unsatisfiable core [2021-11-05 13:16:23,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:16:23,567 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:16:23,569 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 1 case distinctions, treesize of input 63 treesize of output 50 [2021-11-05 13:16:23,583 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-05 13:16:23,583 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 1 case distinctions, treesize of input 71 treesize of output 54 [2021-11-05 13:16:28,390 INFO L354 Elim1Store]: treesize reduction 48, result has 40.0 percent of original size [2021-11-05 13:16:28,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 92 [2021-11-05 13:16:28,419 INFO L354 Elim1Store]: treesize reduction 22, result has 64.5 percent of original size [2021-11-05 13:16:28,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 92 [2021-11-05 13:16:28,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:16:28,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 13:16:29,156 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:16:29,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304907139] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 13:16:29,157 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 13:16:29,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 11] total 33 [2021-11-05 13:16:29,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364202966] [2021-11-05 13:16:29,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 13:16:29,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-05 13:16:29,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:16:29,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-05 13:16:29,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=948, Unknown=0, NotChecked=0, Total=1056 [2021-11-05 13:16:29,159 INFO L87 Difference]: Start difference. First operand 324 states and 377 transitions. Second operand has 33 states, 33 states have (on average 5.7272727272727275) internal successors, (189), 33 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:31,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:16:31,311 INFO L93 Difference]: Finished difference Result 1532 states and 1779 transitions. [2021-11-05 13:16:31,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-05 13:16:31,311 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.7272727272727275) internal successors, (189), 33 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-05 13:16:31,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:16:31,315 INFO L225 Difference]: With dead ends: 1532 [2021-11-05 13:16:31,315 INFO L226 Difference]: Without dead ends: 1385 [2021-11-05 13:16:31,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 132 SyntacticMatches, 10 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 4681.52ms TimeCoverageRelationStatistics Valid=517, Invalid=2905, Unknown=0, NotChecked=0, Total=3422 [2021-11-05 13:16:31,316 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 1854 mSDsluCounter, 3671 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 742.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1854 SdHoareTripleChecker+Valid, 3896 SdHoareTripleChecker+Invalid, 2594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.99ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 644 IncrementalHoareTripleChecker+Unchecked, 886.39ms IncrementalHoareTripleChecker+Time [2021-11-05 13:16:31,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1854 Valid, 3896 Invalid, 2594 Unknown, 0 Unchecked, 10.99ms Time], IncrementalHoareTripleChecker [102 Valid, 1848 Invalid, 0 Unknown, 644 Unchecked, 886.39ms Time] [2021-11-05 13:16:31,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2021-11-05 13:16:31,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 560. [2021-11-05 13:16:31,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 556 states have (on average 1.169064748201439) internal successors, (650), 559 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:31,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 650 transitions. [2021-11-05 13:16:31,353 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 650 transitions. Word has length 74 [2021-11-05 13:16:31,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:16:31,354 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 650 transitions. [2021-11-05 13:16:31,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.7272727272727275) internal successors, (189), 33 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:16:31,354 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 650 transitions. [2021-11-05 13:16:31,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 13:16:31,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:16:31,355 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-05 13:16:31,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-05 13:16:31,570 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,SelfDestructingSolverStorable23 [2021-11-05 13:16:31,571 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:16:31,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:16:31,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1620082764, now seen corresponding path program 1 times [2021-11-05 13:16:31,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:16:31,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314031016] [2021-11-05 13:16:31,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:16:31,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:16:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:16:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 13:16:31,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:16:31,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314031016] [2021-11-05 13:16:31,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314031016] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:16:31,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870109081] [2021-11-05 13:16:31,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:16:31,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:16:31,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:16:31,719 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) [2021-11-05 13:16:31,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-05 13:16:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:16:31,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 88 conjunts are in the unsatisfiable core [2021-11-05 13:16:31,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:16:31,865 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:16:31,865 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 1 case distinctions, treesize of input 63 treesize of output 50 [2021-11-05 13:16:31,880 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-05 13:16:31,880 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 1 case distinctions, treesize of input 71 treesize of output 54 [2021-11-05 13:16:38,534 INFO L354 Elim1Store]: treesize reduction 64, result has 57.0 percent of original size [2021-11-05 13:16:38,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 99 treesize of output 141 [2021-11-05 13:16:38,550 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:16:38,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 123 treesize of output 122 [2021-11-05 13:16:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:16:38,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 13:16:39,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 13:16:39,612 INFO L354 Elim1Store]: treesize reduction 268, result has 11.0 percent of original size [2021-11-05 13:16:39,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 3982 treesize of output 3268 [2021-11-05 13:16:39,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 3687 treesize of output 3627 [2021-11-05 13:16:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:16:41,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870109081] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 13:16:41,579 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 13:16:41,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 16] total 41 [2021-11-05 13:16:41,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300516879] [2021-11-05 13:16:41,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 13:16:41,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-05 13:16:41,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:16:41,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-05 13:16:41,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2021-11-05 13:16:41,581 INFO L87 Difference]: Start difference. First operand 560 states and 650 transitions. Second operand has 41 states, 41 states have (on average 4.634146341463414) internal successors, (190), 41 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:04,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:17:04,536 INFO L93 Difference]: Finished difference Result 2678 states and 3122 transitions. [2021-11-05 13:17:04,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2021-11-05 13:17:04,538 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.634146341463414) internal successors, (190), 41 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-05 13:17:04,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:17:04,544 INFO L225 Difference]: With dead ends: 2678 [2021-11-05 13:17:04,544 INFO L226 Difference]: Without dead ends: 2531 [2021-11-05 13:17:04,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8572 ImplicationChecksByTransitivity, 26064.00ms TimeCoverageRelationStatistics Valid=3302, Invalid=21820, Unknown=0, NotChecked=0, Total=25122 [2021-11-05 13:17:04,550 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 6528 mSDsluCounter, 7115 mSDsCounter, 0 mSdLazyCounter, 3528 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1576.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6528 SdHoareTripleChecker+Valid, 7501 SdHoareTripleChecker+Invalid, 7030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.83ms SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 3528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2768 IncrementalHoareTripleChecker+Unchecked, 1878.24ms IncrementalHoareTripleChecker+Time [2021-11-05 13:17:04,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6528 Valid, 7501 Invalid, 7030 Unknown, 0 Unchecked, 24.83ms Time], IncrementalHoareTripleChecker [734 Valid, 3528 Invalid, 0 Unknown, 2768 Unchecked, 1878.24ms Time] [2021-11-05 13:17:04,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2021-11-05 13:17:04,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 944. [2021-11-05 13:17:04,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 940 states have (on average 1.1851063829787234) internal successors, (1114), 943 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:04,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1114 transitions. [2021-11-05 13:17:04,641 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1114 transitions. Word has length 75 [2021-11-05 13:17:04,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:17:04,641 INFO L470 AbstractCegarLoop]: Abstraction has 944 states and 1114 transitions. [2021-11-05 13:17:04,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.634146341463414) internal successors, (190), 41 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:04,641 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1114 transitions. [2021-11-05 13:17:04,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 13:17:04,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:17:04,642 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:17:04,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-05 13:17:04,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-05 13:17:04,862 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:17:04,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:17:04,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1748503591, now seen corresponding path program 1 times [2021-11-05 13:17:04,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:17:04,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515649203] [2021-11-05 13:17:04,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:04,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:17:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:05,027 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 13:17:05,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:17:05,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515649203] [2021-11-05 13:17:05,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515649203] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:17:05,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854976974] [2021-11-05 13:17:05,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:05,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:17:05,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:17:05,032 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) [2021-11-05 13:17:05,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-05 13:17:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:05,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-05 13:17:05,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:17:05,233 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:17:05,233 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 1 case distinctions, treesize of input 34 treesize of output 21 [2021-11-05 13:17:05,724 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-05 13:17:05,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:17:05,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854976974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:17:05,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 13:17:05,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2021-11-05 13:17:05,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009094007] [2021-11-05 13:17:05,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:17:05,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 13:17:05,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:17:05,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 13:17:05,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-11-05 13:17:05,727 INFO L87 Difference]: Start difference. First operand 944 states and 1114 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:05,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:17:05,939 INFO L93 Difference]: Finished difference Result 1110 states and 1317 transitions. [2021-11-05 13:17:05,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 13:17:05,940 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-05 13:17:05,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:17:05,942 INFO L225 Difference]: With dead ends: 1110 [2021-11-05 13:17:05,942 INFO L226 Difference]: Without dead ends: 1063 [2021-11-05 13:17:05,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 264.05ms TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-11-05 13:17:05,943 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 213 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.57ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 229 IncrementalHoareTripleChecker+Unchecked, 57.70ms IncrementalHoareTripleChecker+Time [2021-11-05 13:17:05,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 1078 Invalid, 299 Unknown, 0 Unchecked, 1.57ms Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 229 Unchecked, 57.70ms Time] [2021-11-05 13:17:05,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2021-11-05 13:17:06,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 976. [2021-11-05 13:17:06,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 972 states have (on average 1.183127572016461) internal successors, (1150), 975 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:06,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1150 transitions. [2021-11-05 13:17:06,009 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1150 transitions. Word has length 75 [2021-11-05 13:17:06,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:17:06,009 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1150 transitions. [2021-11-05 13:17:06,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:06,009 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1150 transitions. [2021-11-05 13:17:06,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 13:17:06,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:17:06,010 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:17:06,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-05 13:17:06,211 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,SelfDestructingSolverStorable25 [2021-11-05 13:17:06,211 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:17:06,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:17:06,212 INFO L85 PathProgramCache]: Analyzing trace with hash 609666605, now seen corresponding path program 1 times [2021-11-05 13:17:06,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:17:06,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461480284] [2021-11-05 13:17:06,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:06,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:17:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:06,351 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 13:17:06,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:17:06,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461480284] [2021-11-05 13:17:06,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461480284] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:17:06,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508957766] [2021-11-05 13:17:06,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:06,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:17:06,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:17:06,353 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) [2021-11-05 13:17:06,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-05 13:17:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:06,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-05 13:17:06,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:17:06,610 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 13:17:06,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:17:06,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508957766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:17:06,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 13:17:06,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2021-11-05 13:17:06,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955020908] [2021-11-05 13:17:06,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:17:06,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:17:06,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:17:06,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:17:06,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-11-05 13:17:06,612 INFO L87 Difference]: Start difference. First operand 976 states and 1150 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:06,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:17:06,735 INFO L93 Difference]: Finished difference Result 1183 states and 1405 transitions. [2021-11-05 13:17:06,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:17:06,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-05 13:17:06,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:17:06,750 INFO L225 Difference]: With dead ends: 1183 [2021-11-05 13:17:06,750 INFO L226 Difference]: Without dead ends: 964 [2021-11-05 13:17:06,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 125.85ms TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-11-05 13:17:06,751 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 290 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.75ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.45ms IncrementalHoareTripleChecker+Time [2021-11-05 13:17:06,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 257 Invalid, 46 Unknown, 0 Unchecked, 0.75ms Time], IncrementalHoareTripleChecker [12 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 32.45ms Time] [2021-11-05 13:17:06,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2021-11-05 13:17:06,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 958. [2021-11-05 13:17:06,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 954 states have (on average 1.170859538784067) internal successors, (1117), 957 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:06,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1117 transitions. [2021-11-05 13:17:06,819 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1117 transitions. Word has length 75 [2021-11-05 13:17:06,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:17:06,820 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 1117 transitions. [2021-11-05 13:17:06,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:06,820 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1117 transitions. [2021-11-05 13:17:06,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-05 13:17:06,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:17:06,821 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:17:06,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-05 13:17:07,035 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,SelfDestructingSolverStorable26 [2021-11-05 13:17:07,036 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:17:07,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:17:07,036 INFO L85 PathProgramCache]: Analyzing trace with hash 841974699, now seen corresponding path program 1 times [2021-11-05 13:17:07,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:17:07,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173285706] [2021-11-05 13:17:07,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:07,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:17:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:17:07,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:17:07,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173285706] [2021-11-05 13:17:07,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173285706] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:17:07,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195392825] [2021-11-05 13:17:07,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:07,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:17:07,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:17:07,459 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) [2021-11-05 13:17:07,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-05 13:17:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:07,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 127 conjunts are in the unsatisfiable core [2021-11-05 13:17:07,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:17:07,624 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 14 treesize of output 15 [2021-11-05 13:17:07,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2021-11-05 13:17:08,983 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-11-05 13:17:08,984 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 68 [2021-11-05 13:17:08,989 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-11-05 13:17:08,990 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 28 [2021-11-05 13:17:09,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:17:09,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 13:17:09,868 INFO L354 Elim1Store]: treesize reduction 141, result has 15.1 percent of original size [2021-11-05 13:17:09,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 2616 treesize of output 2252 [2021-11-05 13:17:10,089 INFO L354 Elim1Store]: treesize reduction 385, result has 24.2 percent of original size [2021-11-05 13:17:10,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 29 case distinctions, treesize of input 5822 treesize of output 5470 [2021-11-05 13:17:10,249 INFO L354 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2021-11-05 13:17:10,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 4476 treesize of output 4340 [2021-11-05 13:17:13,152 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 10 treesize of output 4 [2021-11-05 13:17:13,935 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 8 treesize of output 6 [2021-11-05 13:17:13,944 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 8 treesize of output 6 [2021-11-05 13:17:13,954 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-05 13:17:13,981 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:17:13,981 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 132 treesize of output 134 [2021-11-05 13:17:14,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:17:14,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195392825] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 13:17:14,268 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 13:17:14,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 22] total 48 [2021-11-05 13:17:14,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243062923] [2021-11-05 13:17:14,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 13:17:14,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-05 13:17:14,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:17:14,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-05 13:17:14,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1983, Unknown=0, NotChecked=0, Total=2256 [2021-11-05 13:17:14,270 INFO L87 Difference]: Start difference. First operand 958 states and 1117 transitions. Second operand has 48 states, 48 states have (on average 3.625) internal successors, (174), 48 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:22,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:17:22,782 INFO L93 Difference]: Finished difference Result 1883 states and 2163 transitions. [2021-11-05 13:17:22,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-11-05 13:17:22,782 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.625) internal successors, (174), 48 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-05 13:17:22,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:17:22,785 INFO L225 Difference]: With dead ends: 1883 [2021-11-05 13:17:22,786 INFO L226 Difference]: Without dead ends: 1398 [2021-11-05 13:17:22,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5243 ImplicationChecksByTransitivity, 7230.68ms TimeCoverageRelationStatistics Valid=4342, Invalid=13480, Unknown=0, NotChecked=0, Total=17822 [2021-11-05 13:17:22,797 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 5251 mSDsluCounter, 2970 mSDsCounter, 0 mSdLazyCounter, 3064 mSolverCounterSat, 768 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1659.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5251 SdHoareTripleChecker+Valid, 3051 SdHoareTripleChecker+Invalid, 3832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.20ms SdHoareTripleChecker+Time, 768 IncrementalHoareTripleChecker+Valid, 3064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1964.42ms IncrementalHoareTripleChecker+Time [2021-11-05 13:17:22,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5251 Valid, 3051 Invalid, 3832 Unknown, 0 Unchecked, 18.20ms Time], IncrementalHoareTripleChecker [768 Valid, 3064 Invalid, 0 Unknown, 0 Unchecked, 1964.42ms Time] [2021-11-05 13:17:22,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2021-11-05 13:17:22,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 821. [2021-11-05 13:17:22,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 817 states have (on average 1.1835985312117503) internal successors, (967), 820 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:22,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 967 transitions. [2021-11-05 13:17:22,865 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 967 transitions. Word has length 77 [2021-11-05 13:17:22,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:17:22,865 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 967 transitions. [2021-11-05 13:17:22,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.625) internal successors, (174), 48 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:22,865 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 967 transitions. [2021-11-05 13:17:22,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-05 13:17:22,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:17:22,866 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:17:22,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-05 13:17:23,079 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,SelfDestructingSolverStorable27 [2021-11-05 13:17:23,080 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:17:23,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:17:23,080 INFO L85 PathProgramCache]: Analyzing trace with hash 32628073, now seen corresponding path program 1 times [2021-11-05 13:17:23,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:17:23,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899933122] [2021-11-05 13:17:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:23,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:17:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:17:23,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:17:23,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899933122] [2021-11-05 13:17:23,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899933122] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:17:23,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007493660] [2021-11-05 13:17:23,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:23,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:17:23,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:17:23,234 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) [2021-11-05 13:17:23,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-05 13:17:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:23,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 92 conjunts are in the unsatisfiable core [2021-11-05 13:17:23,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:17:23,387 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:17:23,388 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 1 case distinctions, treesize of input 29 treesize of output 17 [2021-11-05 13:17:24,947 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 41 treesize of output 29 [2021-11-05 13:17:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:17:24,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 13:17:25,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 349 treesize of output 333 [2021-11-05 13:17:25,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:17:25,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007493660] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 13:17:25,424 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 13:17:25,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 17] total 37 [2021-11-05 13:17:25,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554514731] [2021-11-05 13:17:25,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 13:17:25,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-05 13:17:25,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:17:25,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-05 13:17:25,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2021-11-05 13:17:25,425 INFO L87 Difference]: Start difference. First operand 821 states and 967 transitions. Second operand has 37 states, 37 states have (on average 4.54054054054054) internal successors, (168), 37 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:26,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:17:26,334 INFO L93 Difference]: Finished difference Result 1011 states and 1173 transitions. [2021-11-05 13:17:26,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-05 13:17:26,334 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.54054054054054) internal successors, (168), 37 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-05 13:17:26,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:17:26,336 INFO L225 Difference]: With dead ends: 1011 [2021-11-05 13:17:26,337 INFO L226 Difference]: Without dead ends: 908 [2021-11-05 13:17:26,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 1631.05ms TimeCoverageRelationStatistics Valid=332, Invalid=2320, Unknown=0, NotChecked=0, Total=2652 [2021-11-05 13:17:26,337 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 464 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 326.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.06ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 393.66ms IncrementalHoareTripleChecker+Time [2021-11-05 13:17:26,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 2115 Invalid, 1069 Unknown, 0 Unchecked, 4.06ms Time], IncrementalHoareTripleChecker [28 Valid, 1003 Invalid, 0 Unknown, 38 Unchecked, 393.66ms Time] [2021-11-05 13:17:26,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-11-05 13:17:26,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 818. [2021-11-05 13:17:26,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 814 states have (on average 1.1818181818181819) internal successors, (962), 817 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 962 transitions. [2021-11-05 13:17:26,396 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 962 transitions. Word has length 77 [2021-11-05 13:17:26,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:17:26,397 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 962 transitions. [2021-11-05 13:17:26,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.54054054054054) internal successors, (168), 37 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:26,397 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 962 transitions. [2021-11-05 13:17:26,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-05 13:17:26,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:17:26,398 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:17:26,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-05 13:17:26,609 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,SelfDestructingSolverStorable28 [2021-11-05 13:17:26,609 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:17:26,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:17:26,610 INFO L85 PathProgramCache]: Analyzing trace with hash 561523053, now seen corresponding path program 1 times [2021-11-05 13:17:26,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:17:26,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668145144] [2021-11-05 13:17:26,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:26,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:17:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 13:17:26,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:17:26,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668145144] [2021-11-05 13:17:26,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668145144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:17:26,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:17:26,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:17:26,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493209226] [2021-11-05 13:17:26,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:17:26,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:17:26,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:17:26,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:17:26,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:17:26,659 INFO L87 Difference]: Start difference. First operand 818 states and 962 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:26,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:17:26,802 INFO L93 Difference]: Finished difference Result 968 states and 1131 transitions. [2021-11-05 13:17:26,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:17:26,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-05 13:17:26,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:17:26,805 INFO L225 Difference]: With dead ends: 968 [2021-11-05 13:17:26,805 INFO L226 Difference]: Without dead ends: 955 [2021-11-05 13:17:26,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.18ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 13:17:26,806 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 155 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.95ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.20ms IncrementalHoareTripleChecker+Time [2021-11-05 13:17:26,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 597 Invalid, 94 Unknown, 0 Unchecked, 0.95ms Time], IncrementalHoareTripleChecker [11 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 49.20ms Time] [2021-11-05 13:17:26,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2021-11-05 13:17:26,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 635. [2021-11-05 13:17:26,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 631 states have (on average 1.1458003169572109) internal successors, (723), 634 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:26,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 723 transitions. [2021-11-05 13:17:26,857 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 723 transitions. Word has length 80 [2021-11-05 13:17:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:17:26,857 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 723 transitions. [2021-11-05 13:17:26,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:26,858 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 723 transitions. [2021-11-05 13:17:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-05 13:17:26,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:17:26,859 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:17:26,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-05 13:17:26,859 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:17:26,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:17:26,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1542092017, now seen corresponding path program 1 times [2021-11-05 13:17:26,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:17:26,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92977073] [2021-11-05 13:17:26,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:26,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:17:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 13:17:26,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:17:26,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92977073] [2021-11-05 13:17:26,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92977073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:17:26,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:17:26,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:17:26,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519027628] [2021-11-05 13:17:26,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:17:26,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:17:26,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:17:26,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:17:26,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:17:26,925 INFO L87 Difference]: Start difference. First operand 635 states and 723 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:27,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:17:27,026 INFO L93 Difference]: Finished difference Result 635 states and 723 transitions. [2021-11-05 13:17:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:17:27,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-05 13:17:27,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:17:27,028 INFO L225 Difference]: With dead ends: 635 [2021-11-05 13:17:27,029 INFO L226 Difference]: Without dead ends: 633 [2021-11-05 13:17:27,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.82ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:17:27,029 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 46 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.54ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.88ms IncrementalHoareTripleChecker+Time [2021-11-05 13:17:27,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 251 Invalid, 60 Unknown, 0 Unchecked, 0.54ms Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 46.88ms Time] [2021-11-05 13:17:27,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-11-05 13:17:27,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2021-11-05 13:17:27,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 630 states have (on average 1.1412698412698412) internal successors, (719), 632 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:27,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 719 transitions. [2021-11-05 13:17:27,079 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 719 transitions. Word has length 82 [2021-11-05 13:17:27,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:17:27,079 INFO L470 AbstractCegarLoop]: Abstraction has 633 states and 719 transitions. [2021-11-05 13:17:27,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:27,079 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 719 transitions. [2021-11-05 13:17:27,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-05 13:17:27,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:17:27,081 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:17:27,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-05 13:17:27,081 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:17:27,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:17:27,081 INFO L85 PathProgramCache]: Analyzing trace with hash 762886037, now seen corresponding path program 1 times [2021-11-05 13:17:27,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:17:27,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986921432] [2021-11-05 13:17:27,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:27,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:17:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 13:17:27,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:17:27,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986921432] [2021-11-05 13:17:27,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986921432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:17:27,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:17:27,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:17:27,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994873508] [2021-11-05 13:17:27,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:17:27,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:17:27,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:17:27,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:17:27,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:17:27,138 INFO L87 Difference]: Start difference. First operand 633 states and 719 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:27,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:17:27,240 INFO L93 Difference]: Finished difference Result 707 states and 799 transitions. [2021-11-05 13:17:27,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:17:27,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-05 13:17:27,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:17:27,242 INFO L225 Difference]: With dead ends: 707 [2021-11-05 13:17:27,242 INFO L226 Difference]: Without dead ends: 414 [2021-11-05 13:17:27,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.54ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 13:17:27,244 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 125 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.70ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.51ms IncrementalHoareTripleChecker+Time [2021-11-05 13:17:27,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 602 Invalid, 86 Unknown, 0 Unchecked, 0.70ms Time], IncrementalHoareTripleChecker [15 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 49.51ms Time] [2021-11-05 13:17:27,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-11-05 13:17:27,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 353. [2021-11-05 13:17:27,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 350 states have (on average 1.1257142857142857) internal successors, (394), 352 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:27,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 394 transitions. [2021-11-05 13:17:27,276 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 394 transitions. Word has length 83 [2021-11-05 13:17:27,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:17:27,276 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 394 transitions. [2021-11-05 13:17:27,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:27,276 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 394 transitions. [2021-11-05 13:17:27,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 13:17:27,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:17:27,277 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:17:27,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-05 13:17:27,277 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:17:27,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:17:27,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1488938402, now seen corresponding path program 1 times [2021-11-05 13:17:27,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:17:27,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053648134] [2021-11-05 13:17:27,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:27,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:17:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 13:17:27,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:17:27,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053648134] [2021-11-05 13:17:27,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053648134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:17:27,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:17:27,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:17:27,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714321357] [2021-11-05 13:17:27,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:17:27,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:17:27,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:17:27,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:17:27,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:17:27,414 INFO L87 Difference]: Start difference. First operand 353 states and 394 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:27,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:17:27,562 INFO L93 Difference]: Finished difference Result 353 states and 394 transitions. [2021-11-05 13:17:27,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:17:27,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-05 13:17:27,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:17:27,564 INFO L225 Difference]: With dead ends: 353 [2021-11-05 13:17:27,564 INFO L226 Difference]: Without dead ends: 351 [2021-11-05 13:17:27,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 62.27ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-05 13:17:27,564 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 229 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.84ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.32ms IncrementalHoareTripleChecker+Time [2021-11-05 13:17:27,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 308 Invalid, 94 Unknown, 0 Unchecked, 0.84ms Time], IncrementalHoareTripleChecker [6 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 81.32ms Time] [2021-11-05 13:17:27,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-11-05 13:17:27,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2021-11-05 13:17:27,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 349 states have (on average 1.1203438395415473) internal successors, (391), 350 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 391 transitions. [2021-11-05 13:17:27,595 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 391 transitions. Word has length 85 [2021-11-05 13:17:27,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:17:27,596 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 391 transitions. [2021-11-05 13:17:27,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:27,596 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 391 transitions. [2021-11-05 13:17:27,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 13:17:27,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:17:27,597 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:17:27,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-05 13:17:27,597 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:17:27,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:17:27,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1748357123, now seen corresponding path program 1 times [2021-11-05 13:17:27,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:17:27,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410441767] [2021-11-05 13:17:27,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:27,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:17:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:28,007 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:17:28,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:17:28,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410441767] [2021-11-05 13:17:28,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410441767] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:17:28,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926062263] [2021-11-05 13:17:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:28,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:17:28,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:17:28,009 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) [2021-11-05 13:17:28,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-05 13:17:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:28,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 107 conjunts are in the unsatisfiable core [2021-11-05 13:17:28,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:17:28,186 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-05 13:17:28,187 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 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-05 13:17:28,195 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-05 13:17:28,195 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 1 case distinctions, treesize of input 73 treesize of output 54 [2021-11-05 13:17:31,630 INFO L354 Elim1Store]: treesize reduction 111, result has 25.5 percent of original size [2021-11-05 13:17:31,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 160 treesize of output 135 [2021-11-05 13:17:31,670 INFO L354 Elim1Store]: treesize reduction 45, result has 53.6 percent of original size [2021-11-05 13:17:31,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 109 treesize of output 120 [2021-11-05 13:17:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:17:31,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 13:17:32,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:17:32,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926062263] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 13:17:32,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 13:17:32,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 16] total 41 [2021-11-05 13:17:32,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867567131] [2021-11-05 13:17:32,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 13:17:32,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-05 13:17:32,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:17:32,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-05 13:17:32,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1492, Unknown=0, NotChecked=0, Total=1640 [2021-11-05 13:17:32,286 INFO L87 Difference]: Start difference. First operand 351 states and 391 transitions. Second operand has 41 states, 41 states have (on average 4.585365853658536) internal successors, (188), 41 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:33,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:17:33,096 INFO L93 Difference]: Finished difference Result 452 states and 502 transitions. [2021-11-05 13:17:33,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-05 13:17:33,097 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.585365853658536) internal successors, (188), 41 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-05 13:17:33,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:17:33,098 INFO L225 Difference]: With dead ends: 452 [2021-11-05 13:17:33,098 INFO L226 Difference]: Without dead ends: 399 [2021-11-05 13:17:33,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1657.34ms TimeCoverageRelationStatistics Valid=263, Invalid=2707, Unknown=0, NotChecked=0, Total=2970 [2021-11-05 13:17:33,099 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 248 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 261.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.41ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 284 IncrementalHoareTripleChecker+Unchecked, 310.10ms IncrementalHoareTripleChecker+Time [2021-11-05 13:17:33,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 1664 Invalid, 907 Unknown, 0 Unchecked, 2.41ms Time], IncrementalHoareTripleChecker [40 Valid, 583 Invalid, 0 Unknown, 284 Unchecked, 310.10ms Time] [2021-11-05 13:17:33,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-11-05 13:17:33,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 356. [2021-11-05 13:17:33,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 354 states have (on average 1.1214689265536724) internal successors, (397), 355 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 397 transitions. [2021-11-05 13:17:33,144 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 397 transitions. Word has length 85 [2021-11-05 13:17:33,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:17:33,145 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 397 transitions. [2021-11-05 13:17:33,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.585365853658536) internal successors, (188), 41 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:33,145 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 397 transitions. [2021-11-05 13:17:33,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 13:17:33,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:17:33,146 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 13:17:33,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-05 13:17:33,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:17:33,359 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:17:33,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:17:33,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1737263547, now seen corresponding path program 1 times [2021-11-05 13:17:33,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:17:33,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276445605] [2021-11-05 13:17:33,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:33,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:17:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:17:33,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:17:33,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276445605] [2021-11-05 13:17:33,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276445605] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:17:33,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095744654] [2021-11-05 13:17:33,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:33,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:17:33,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:17:33,560 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) [2021-11-05 13:17:33,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-05 13:17:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:33,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 91 conjunts are in the unsatisfiable core [2021-11-05 13:17:33,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:17:33,707 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:17:33,707 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 1 case distinctions, treesize of input 63 treesize of output 50 [2021-11-05 13:17:33,720 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-05 13:17:33,721 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 1 case distinctions, treesize of input 71 treesize of output 54 [2021-11-05 13:17:37,886 INFO L354 Elim1Store]: treesize reduction 66, result has 17.5 percent of original size [2021-11-05 13:17:37,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 71 [2021-11-05 13:17:37,926 INFO L354 Elim1Store]: treesize reduction 22, result has 64.5 percent of original size [2021-11-05 13:17:37,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 77 [2021-11-05 13:17:37,997 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:17:37,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 13:17:38,577 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 13:17:38,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095744654] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 13:17:38,577 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 13:17:38,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 12] total 37 [2021-11-05 13:17:38,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053454335] [2021-11-05 13:17:38,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 13:17:38,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-05 13:17:38,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:17:38,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-05 13:17:38,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1174, Unknown=1, NotChecked=0, Total=1332 [2021-11-05 13:17:38,579 INFO L87 Difference]: Start difference. First operand 356 states and 397 transitions. Second operand has 37 states, 37 states have (on average 6.162162162162162) internal successors, (228), 37 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:38,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:17:38,792 INFO L93 Difference]: Finished difference Result 427 states and 469 transitions. [2021-11-05 13:17:38,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-05 13:17:38,799 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.162162162162162) internal successors, (228), 37 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-05 13:17:38,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:17:38,800 INFO L225 Difference]: With dead ends: 427 [2021-11-05 13:17:38,800 INFO L226 Difference]: Without dead ends: 371 [2021-11-05 13:17:38,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 2730.96ms TimeCoverageRelationStatistics Valid=179, Invalid=1460, Unknown=1, NotChecked=0, Total=1640 [2021-11-05 13:17:38,801 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 146 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 98.03ms IncrementalHoareTripleChecker+Time [2021-11-05 13:17:38,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 1663 Invalid, 298 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [4 Valid, 173 Invalid, 0 Unknown, 121 Unchecked, 98.03ms Time] [2021-11-05 13:17:38,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-05 13:17:38,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 337. [2021-11-05 13:17:38,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 335 states have (on average 1.1074626865671642) internal successors, (371), 336 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:38,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 371 transitions. [2021-11-05 13:17:38,830 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 371 transitions. Word has length 85 [2021-11-05 13:17:38,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:17:38,830 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 371 transitions. [2021-11-05 13:17:38,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.162162162162162) internal successors, (228), 37 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:38,830 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 371 transitions. [2021-11-05 13:17:38,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 13:17:38,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:17:38,831 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:17:38,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-05 13:17:39,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:17:39,048 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:17:39,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:17:39,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2115152444, now seen corresponding path program 2 times [2021-11-05 13:17:39,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:17:39,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118324674] [2021-11-05 13:17:39,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:39,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:17:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:39,195 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-05 13:17:39,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:17:39,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118324674] [2021-11-05 13:17:39,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118324674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:17:39,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:17:39,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 13:17:39,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299343632] [2021-11-05 13:17:39,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:17:39,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 13:17:39,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:17:39,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 13:17:39,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-05 13:17:39,197 INFO L87 Difference]: Start difference. First operand 337 states and 371 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:39,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:17:39,488 INFO L93 Difference]: Finished difference Result 386 states and 425 transitions. [2021-11-05 13:17:39,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 13:17:39,488 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-05 13:17:39,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:17:39,489 INFO L225 Difference]: With dead ends: 386 [2021-11-05 13:17:39,489 INFO L226 Difference]: Without dead ends: 345 [2021-11-05 13:17:39,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 105.29ms TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-11-05 13:17:39,490 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 479 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 146.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.69ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 176.67ms IncrementalHoareTripleChecker+Time [2021-11-05 13:17:39,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 820 Invalid, 367 Unknown, 0 Unchecked, 1.69ms Time], IncrementalHoareTripleChecker [48 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 176.67ms Time] [2021-11-05 13:17:39,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-05 13:17:39,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 321. [2021-11-05 13:17:39,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 319 states have (on average 1.103448275862069) internal successors, (352), 320 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 352 transitions. [2021-11-05 13:17:39,525 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 352 transitions. Word has length 85 [2021-11-05 13:17:39,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:17:39,525 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 352 transitions. [2021-11-05 13:17:39,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:39,526 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 352 transitions. [2021-11-05 13:17:39,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 13:17:39,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:17:39,526 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:17:39,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-05 13:17:39,527 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:17:39,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:17:39,527 INFO L85 PathProgramCache]: Analyzing trace with hash 275250880, now seen corresponding path program 1 times [2021-11-05 13:17:39,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:17:39,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772426447] [2021-11-05 13:17:39,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:39,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:17:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:39,661 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-05 13:17:39,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:17:39,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772426447] [2021-11-05 13:17:39,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772426447] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:17:39,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831034992] [2021-11-05 13:17:39,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:39,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:17:39,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:17:39,663 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) [2021-11-05 13:17:39,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-05 13:17:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:39,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-05 13:17:39,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:17:39,842 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-05 13:17:39,843 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 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-05 13:17:39,851 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-05 13:17:39,851 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 1 case distinctions, treesize of input 73 treesize of output 54 [2021-11-05 13:17:41,793 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-11-05 13:17:41,794 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 92 [2021-11-05 13:17:41,806 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:17:41,806 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 95 [2021-11-05 13:17:41,969 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-05 13:17:41,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:17:41,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831034992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:17:41,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 13:17:41,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [12] total 22 [2021-11-05 13:17:41,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360172023] [2021-11-05 13:17:41,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:17:41,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 13:17:41,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:17:41,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 13:17:41,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2021-11-05 13:17:41,983 INFO L87 Difference]: Start difference. First operand 321 states and 352 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:42,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:17:42,055 INFO L93 Difference]: Finished difference Result 361 states and 397 transitions. [2021-11-05 13:17:42,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 13:17:42,056 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-05 13:17:42,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:17:42,056 INFO L225 Difference]: With dead ends: 361 [2021-11-05 13:17:42,057 INFO L226 Difference]: Without dead ends: 316 [2021-11-05 13:17:42,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 371.84ms TimeCoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2021-11-05 13:17:42,057 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 24 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.64ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 22.32ms IncrementalHoareTripleChecker+Time [2021-11-05 13:17:42,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 790 Invalid, 192 Unknown, 0 Unchecked, 0.64ms Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 164 Unchecked, 22.32ms Time] [2021-11-05 13:17:42,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-05 13:17:42,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 290. [2021-11-05 13:17:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 288 states have (on average 1.1006944444444444) internal successors, (317), 289 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:42,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 317 transitions. [2021-11-05 13:17:42,087 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 317 transitions. Word has length 85 [2021-11-05 13:17:42,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:17:42,087 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 317 transitions. [2021-11-05 13:17:42,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:42,087 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 317 transitions. [2021-11-05 13:17:42,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-05 13:17:42,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:17:42,090 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:17:42,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-05 13:17:42,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-05 13:17:42,303 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:17:42,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:17:42,304 INFO L85 PathProgramCache]: Analyzing trace with hash -86539151, now seen corresponding path program 1 times [2021-11-05 13:17:42,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:17:42,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906830516] [2021-11-05 13:17:42,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:42,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:17:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:17:43,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:17:43,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906830516] [2021-11-05 13:17:43,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906830516] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:17:43,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362858] [2021-11-05 13:17:43,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:43,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:17:43,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:17:43,204 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) [2021-11-05 13:17:43,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-05 13:17:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:43,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 149 conjunts are in the unsatisfiable core [2021-11-05 13:17:43,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:17:43,381 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:17:43,381 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 1 case distinctions, treesize of input 63 treesize of output 50 [2021-11-05 13:17:43,396 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-05 13:17:43,397 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 1 case distinctions, treesize of input 71 treesize of output 54 [2021-11-05 13:17:52,283 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-05 13:17:52,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 13:17:53,523 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-05 13:17:53,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362858] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-05 13:17:53,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-05 13:17:53,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [31, 27] total 68 [2021-11-05 13:17:53,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581403393] [2021-11-05 13:17:53,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:17:53,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 13:17:53,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:17:53,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 13:17:53,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=4355, Unknown=0, NotChecked=0, Total=4556 [2021-11-05 13:17:53,525 INFO L87 Difference]: Start difference. First operand 290 states and 317 transitions. Second operand has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:55,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:17:55,250 INFO L93 Difference]: Finished difference Result 487 states and 532 transitions. [2021-11-05 13:17:55,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-05 13:17:55,250 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-05 13:17:55,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:17:55,252 INFO L225 Difference]: With dead ends: 487 [2021-11-05 13:17:55,252 INFO L226 Difference]: Without dead ends: 446 [2021-11-05 13:17:55,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 9577.00ms TimeCoverageRelationStatistics Valid=647, Invalid=7363, Unknown=0, NotChecked=0, Total=8010 [2021-11-05 13:17:55,253 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 1395 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 326.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.96ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 384.76ms IncrementalHoareTripleChecker+Time [2021-11-05 13:17:55,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1395 Valid, 868 Invalid, 742 Unknown, 0 Unchecked, 2.96ms Time], IncrementalHoareTripleChecker [88 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 384.76ms Time] [2021-11-05 13:17:55,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-05 13:17:55,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 296. [2021-11-05 13:17:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 294 states have (on average 1.1020408163265305) internal successors, (324), 295 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:55,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 324 transitions. [2021-11-05 13:17:55,280 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 324 transitions. Word has length 95 [2021-11-05 13:17:55,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:17:55,281 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 324 transitions. [2021-11-05 13:17:55,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:55,281 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 324 transitions. [2021-11-05 13:17:55,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-05 13:17:55,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:17:55,282 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:17:55,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-05 13:17:55,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-05 13:17:55,500 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:17:55,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:17:55,500 INFO L85 PathProgramCache]: Analyzing trace with hash -895885777, now seen corresponding path program 1 times [2021-11-05 13:17:55,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:17:55,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779162764] [2021-11-05 13:17:55,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:55,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:17:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:55,664 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-05 13:17:55,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:17:55,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779162764] [2021-11-05 13:17:55,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779162764] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:17:55,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447610536] [2021-11-05 13:17:55,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:55,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:17:55,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:17:55,666 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) [2021-11-05 13:17:55,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-05 13:17:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:55,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-05 13:17:55,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:17:55,841 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-05 13:17:55,842 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 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-05 13:17:55,850 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-05 13:17:55,850 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 1 case distinctions, treesize of input 73 treesize of output 54 [2021-11-05 13:17:58,272 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:17:58,272 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 112 [2021-11-05 13:17:58,289 INFO L354 Elim1Store]: treesize reduction 14, result has 62.2 percent of original size [2021-11-05 13:17:58,290 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 98 [2021-11-05 13:17:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-05 13:17:58,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:17:58,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447610536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:17:58,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 13:17:58,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [14] total 27 [2021-11-05 13:17:58,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192186626] [2021-11-05 13:17:58,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:17:58,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 13:17:58,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:17:58,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 13:17:58,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2021-11-05 13:17:58,427 INFO L87 Difference]: Start difference. First operand 296 states and 324 transitions. Second operand has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:58,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:17:58,500 INFO L93 Difference]: Finished difference Result 354 states and 392 transitions. [2021-11-05 13:17:58,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 13:17:58,500 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-05 13:17:58,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:17:58,501 INFO L225 Difference]: With dead ends: 354 [2021-11-05 13:17:58,501 INFO L226 Difference]: Without dead ends: 296 [2021-11-05 13:17:58,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 553.82ms TimeCoverageRelationStatistics Valid=75, Invalid=737, Unknown=0, NotChecked=0, Total=812 [2021-11-05 13:17:58,502 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 20 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.81ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 228 IncrementalHoareTripleChecker+Unchecked, 19.82ms IncrementalHoareTripleChecker+Time [2021-11-05 13:17:58,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 928 Invalid, 256 Unknown, 0 Unchecked, 0.81ms Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 228 Unchecked, 19.82ms Time] [2021-11-05 13:17:58,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-05 13:17:58,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 267. [2021-11-05 13:17:58,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 265 states have (on average 1.0981132075471698) internal successors, (291), 266 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:58,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 291 transitions. [2021-11-05 13:17:58,529 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 291 transitions. Word has length 95 [2021-11-05 13:17:58,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:17:58,529 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 291 transitions. [2021-11-05 13:17:58,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:58,530 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 291 transitions. [2021-11-05 13:17:58,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-05 13:17:58,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:17:58,530 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:17:58,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-05 13:17:58,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-05 13:17:58,747 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:17:58,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:17:58,748 INFO L85 PathProgramCache]: Analyzing trace with hash 353638822, now seen corresponding path program 1 times [2021-11-05 13:17:58,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:17:58,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743048158] [2021-11-05 13:17:58,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:58,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:17:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:58,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 13:17:58,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:17:58,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743048158] [2021-11-05 13:17:58,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743048158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:17:58,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:17:58,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:17:58,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331127855] [2021-11-05 13:17:58,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:17:58,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:17:58,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:17:58,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:17:58,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:17:58,898 INFO L87 Difference]: Start difference. First operand 267 states and 291 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:59,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:17:59,075 INFO L93 Difference]: Finished difference Result 271 states and 294 transitions. [2021-11-05 13:17:59,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:17:59,075 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-05 13:17:59,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:17:59,076 INFO L225 Difference]: With dead ends: 271 [2021-11-05 13:17:59,076 INFO L226 Difference]: Without dead ends: 267 [2021-11-05 13:17:59,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 90.14ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-05 13:17:59,078 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 264 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.84ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.22ms IncrementalHoareTripleChecker+Time [2021-11-05 13:17:59,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 251 Invalid, 159 Unknown, 0 Unchecked, 0.84ms Time], IncrementalHoareTripleChecker [17 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 88.22ms Time] [2021-11-05 13:17:59,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-05 13:17:59,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-11-05 13:17:59,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 265 states have (on average 1.090566037735849) internal successors, (289), 266 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 289 transitions. [2021-11-05 13:17:59,109 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 289 transitions. Word has length 96 [2021-11-05 13:17:59,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:17:59,109 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 289 transitions. [2021-11-05 13:17:59,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:59,110 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 289 transitions. [2021-11-05 13:17:59,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-05 13:17:59,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:17:59,111 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:17:59,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-05 13:17:59,112 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:17:59,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:17:59,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2130493226, now seen corresponding path program 1 times [2021-11-05 13:17:59,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:17:59,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469378251] [2021-11-05 13:17:59,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:59,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:17:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:17:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 13:17:59,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:17:59,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469378251] [2021-11-05 13:17:59,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469378251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:17:59,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:17:59,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 13:17:59,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701374446] [2021-11-05 13:17:59,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:17:59,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 13:17:59,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:17:59,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 13:17:59,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-05 13:17:59,332 INFO L87 Difference]: Start difference. First operand 267 states and 289 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:59,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:17:59,536 INFO L93 Difference]: Finished difference Result 271 states and 292 transitions. [2021-11-05 13:17:59,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:17:59,537 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-05 13:17:59,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:17:59,537 INFO L225 Difference]: With dead ends: 271 [2021-11-05 13:17:59,537 INFO L226 Difference]: Without dead ends: 264 [2021-11-05 13:17:59,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 118.98ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-05 13:17:59,538 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 396 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.03ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.85ms IncrementalHoareTripleChecker+Time [2021-11-05 13:17:59,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 327 Invalid, 249 Unknown, 0 Unchecked, 1.03ms Time], IncrementalHoareTripleChecker [45 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 109.85ms Time] [2021-11-05 13:17:59,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-05 13:17:59,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-11-05 13:17:59,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 262 states have (on average 1.083969465648855) internal successors, (284), 263 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:59,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 284 transitions. [2021-11-05 13:17:59,566 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 284 transitions. Word has length 96 [2021-11-05 13:17:59,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:17:59,567 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 284 transitions. [2021-11-05 13:17:59,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:17:59,567 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 284 transitions. [2021-11-05 13:17:59,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-05 13:17:59,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:17:59,567 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:17:59,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-05 13:17:59,568 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:17:59,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:17:59,568 INFO L85 PathProgramCache]: Analyzing trace with hash -446690621, now seen corresponding path program 1 times [2021-11-05 13:17:59,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:17:59,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384042118] [2021-11-05 13:17:59,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:17:59,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:17:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:18:00,095 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 13:18:00,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:18:00,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384042118] [2021-11-05 13:18:00,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384042118] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:18:00,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759488164] [2021-11-05 13:18:00,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:18:00,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:18:00,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:18:00,100 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) [2021-11-05 13:18:00,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-05 13:18:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:18:00,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 165 conjunts are in the unsatisfiable core [2021-11-05 13:18:00,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:18:00,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:18:00,356 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 29 treesize of output 17 [2021-11-05 13:18:00,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:18:00,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 13:18:00,363 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 29 treesize of output 17 [2021-11-05 13:18:00,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:18:00,504 INFO L354 Elim1Store]: treesize reduction 192, result has 14.3 percent of original size [2021-11-05 13:18:00,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 169 treesize of output 117 [2021-11-05 13:18:00,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:18:00,529 INFO L354 Elim1Store]: treesize reduction 186, result has 16.2 percent of original size [2021-11-05 13:18:00,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 156 treesize of output 111 [2021-11-05 13:18:04,136 INFO L354 Elim1Store]: treesize reduction 216, result has 3.1 percent of original size [2021-11-05 13:18:04,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 260 treesize of output 142 [2021-11-05 13:18:04,147 INFO L354 Elim1Store]: treesize reduction 94, result has 3.1 percent of original size [2021-11-05 13:18:04,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 97 treesize of output 47 [2021-11-05 13:18:04,215 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-05 13:18:04,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 13:18:14,469 WARN L230 SmtUtils]: Spent 8.68s on a formula simplification. DAG size of input: 663 DAG size of output: 323 [2021-11-05 13:18:14,470 INFO L354 Elim1Store]: treesize reduction 23607, result has 25.0 percent of original size [2021-11-05 13:18:14,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 1 disjoint index pairs (out of 91 index pairs), introduced 21 new quantified variables, introduced 108 case distinctions, treesize of input 14030863437 treesize of output 13045886224 Killed by 15