./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_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_byte_buf_write_be16_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 e59944759baac4a78b3b5460ff6f3a8abaec03123fb9537d86aeca785269fb41 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 12:28:07,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 12:28:07,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 12:28:07,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 12:28:07,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 12:28:07,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 12:28:07,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 12:28:07,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 12:28:07,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 12:28:07,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 12:28:07,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 12:28:07,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 12:28:07,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 12:28:07,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 12:28:07,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 12:28:07,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 12:28:07,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 12:28:07,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 12:28:07,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 12:28:07,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 12:28:07,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 12:28:07,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 12:28:07,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 12:28:07,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 12:28:07,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 12:28:07,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 12:28:07,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 12:28:07,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 12:28:07,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 12:28:07,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 12:28:07,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 12:28:07,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 12:28:07,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 12:28:07,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 12:28:07,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 12:28:07,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 12:28:07,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 12:28:07,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 12:28:07,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 12:28:07,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 12:28:07,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 12:28:07,708 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 12:28:07,743 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 12:28:07,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 12:28:07,745 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 12:28:07,745 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 12:28:07,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 12:28:07,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 12:28:07,748 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 12:28:07,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 12:28:07,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 12:28:07,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 12:28:07,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 12:28:07,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 12:28:07,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 12:28:07,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 12:28:07,750 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 12:28:07,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 12:28:07,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 12:28:07,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 12:28:07,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 12:28:07,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:28:07,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 12:28:07,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 12:28:07,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 12:28:07,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 12:28:07,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 12:28:07,753 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 12:28:07,753 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 12:28:07,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 12:28:07,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 12:28:07,754 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e59944759baac4a78b3b5460ff6f3a8abaec03123fb9537d86aeca785269fb41 [2021-11-05 12:28:08,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 12:28:08,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 12:28:08,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 12:28:08,094 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 12:28:08,095 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 12:28:08,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i [2021-11-05 12:28:08,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/582417cd3/feaef9b7e0fd4ebe80bee736a1febc9d/FLAG5708d85ae [2021-11-05 12:28:08,878 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 12:28:08,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i [2021-11-05 12:28:08,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/582417cd3/feaef9b7e0fd4ebe80bee736a1febc9d/FLAG5708d85ae [2021-11-05 12:28:09,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/582417cd3/feaef9b7e0fd4ebe80bee736a1febc9d [2021-11-05 12:28:09,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 12:28:09,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 12:28:09,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 12:28:09,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 12:28:09,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 12:28:09,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:28:09" (1/1) ... [2021-11-05 12:28:09,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@210dc8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:28:09, skipping insertion in model container [2021-11-05 12:28:09,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:28:09" (1/1) ... [2021-11-05 12:28:09,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 12:28:09,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 12:28:09,394 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_byte_buf_write_be16_harness.i[4497,4510] [2021-11-05 12:28:09,403 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_byte_buf_write_be16_harness.i[4557,4570] [2021-11-05 12:28:09,424 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:28:09,432 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:28:10,025 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,026 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,027 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,028 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,029 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,039 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,043 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,046 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,047 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,337 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:28:10,338 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:28:10,340 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:28:10,341 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:28:10,342 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:28:10,343 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:28:10,343 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:28:10,343 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:28:10,352 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:28:10,353 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:28:10,502 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:28:10,635 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,638 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:28:10,749 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 12:28:10,775 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_byte_buf_write_be16_harness.i[4497,4510] [2021-11-05 12:28:10,777 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_byte_buf_write_be16_harness.i[4557,4570] [2021-11-05 12:28:10,779 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:28:10,779 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:28:10,826 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,826 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,827 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,827 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,828 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,835 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,835 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,836 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,836 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,874 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:28:10,875 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:28:10,876 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:28:10,876 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:28:10,877 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:28:10,877 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:28:10,878 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:28:10,878 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:28:10,878 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:28:10,883 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:28:10,903 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:28:10,962 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:10,962 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:28:11,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:28:11,278 INFO L208 MainTranslator]: Completed translation [2021-11-05 12:28:11,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:28:11 WrapperNode [2021-11-05 12:28:11,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 12:28:11,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 12:28:11,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 12:28:11,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 12:28:11,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:28:11" (1/1) ... [2021-11-05 12:28:11,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:28:11" (1/1) ... [2021-11-05 12:28:11,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 12:28:11,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 12:28:11,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 12:28:11,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 12:28:11,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:28:11" (1/1) ... [2021-11-05 12:28:11,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:28:11" (1/1) ... [2021-11-05 12:28:11,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:28:11" (1/1) ... [2021-11-05 12:28:11,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:28:11" (1/1) ... [2021-11-05 12:28:11,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:28:11" (1/1) ... [2021-11-05 12:28:11,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:28:11" (1/1) ... [2021-11-05 12:28:11,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:28:11" (1/1) ... [2021-11-05 12:28:11,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 12:28:11,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 12:28:11,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 12:28:11,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 12:28:11,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:28:11" (1/1) ... [2021-11-05 12:28:11,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:28:11,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:28:11,633 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 12:28:11,647 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 12:28:11,675 INFO L130 BoogieDeclarations]: Found specification of procedure htons [2021-11-05 12:28:11,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 12:28:11,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 12:28:11,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 12:28:11,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 12:28:11,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 12:28:11,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 12:28:11,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 12:28:11,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 12:28:11,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 12:28:11,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 12:28:11,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 12:28:20,404 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 12:28:20,404 INFO L299 CfgBuilder]: Removed 89 assume(true) statements. [2021-11-05 12:28:20,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:28:20 BoogieIcfgContainer [2021-11-05 12:28:20,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 12:28:20,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 12:28:20,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 12:28:20,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 12:28:20,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 12:28:09" (1/3) ... [2021-11-05 12:28:20,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89dfb46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:28:20, skipping insertion in model container [2021-11-05 12:28:20,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:28:11" (2/3) ... [2021-11-05 12:28:20,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89dfb46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:28:20, skipping insertion in model container [2021-11-05 12:28:20,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:28:20" (3/3) ... [2021-11-05 12:28:20,413 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be16_harness.i [2021-11-05 12:28:20,417 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 12:28:20,418 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-05 12:28:20,455 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 12:28:20,460 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 12:28:20,461 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-05 12:28:20,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 174 states have (on average 1.4827586206896552) internal successors, (258), 185 states have internal predecessors, (258), 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 12:28:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-05 12:28:20,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:28:20,483 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] [2021-11-05 12:28:20,484 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:28:20,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:28:20,489 INFO L85 PathProgramCache]: Analyzing trace with hash 733514216, now seen corresponding path program 1 times [2021-11-05 12:28:20,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:28:20,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053860044] [2021-11-05 12:28:20,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:28:20,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:28:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:28:21,149 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 12:28:21,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:28:21,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053860044] [2021-11-05 12:28:21,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053860044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:28:21,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:28:21,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 12:28:21,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227729023] [2021-11-05 12:28:21,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:28:21,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 12:28:21,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:28:21,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 12:28:21,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 12:28:21,189 INFO L87 Difference]: Start difference. First operand has 186 states, 174 states have (on average 1.4827586206896552) internal successors, (258), 185 states have internal predecessors, (258), 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 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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 12:28:21,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:28:21,239 INFO L93 Difference]: Finished difference Result 368 states and 511 transitions. [2021-11-05 12:28:21,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 12:28:21,241 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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 39 [2021-11-05 12:28:21,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:28:21,252 INFO L225 Difference]: With dead ends: 368 [2021-11-05 12:28:21,253 INFO L226 Difference]: Without dead ends: 181 [2021-11-05 12:28:21,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 12:28:21,264 INFO L933 BasicCegarLoop]: 236 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, 236 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.37ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 12:28:21,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 4.37ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 12:28:21,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-05 12:28:21,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-05 12:28:21,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 170 states have (on average 1.3588235294117648) internal successors, (231), 180 states have internal predecessors, (231), 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 12:28:21,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 231 transitions. [2021-11-05 12:28:21,350 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 231 transitions. Word has length 39 [2021-11-05 12:28:21,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:28:21,352 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 231 transitions. [2021-11-05 12:28:21,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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 12:28:21,354 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 231 transitions. [2021-11-05 12:28:21,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-05 12:28:21,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:28:21,357 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] [2021-11-05 12:28:21,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 12:28:21,358 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:28:21,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:28:21,361 INFO L85 PathProgramCache]: Analyzing trace with hash 699508844, now seen corresponding path program 1 times [2021-11-05 12:28:21,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:28:21,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821557372] [2021-11-05 12:28:21,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:28:21,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:28:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:28:21,704 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 12:28:21,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:28:21,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821557372] [2021-11-05 12:28:21,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821557372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:28:21,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:28:21,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:28:21,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735206085] [2021-11-05 12:28:21,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:28:21,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:28:21,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:28:21,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:28:21,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:28:21,707 INFO L87 Difference]: Start difference. First operand 181 states and 231 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 12:28:21,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:28:21,950 INFO L93 Difference]: Finished difference Result 336 states and 428 transitions. [2021-11-05 12:28:21,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:28:21,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 39 [2021-11-05 12:28:21,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:28:21,952 INFO L225 Difference]: With dead ends: 336 [2021-11-05 12:28:21,952 INFO L226 Difference]: Without dead ends: 181 [2021-11-05 12:28:21,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.78ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:28:21,954 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 322 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 157.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.03ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 189.16ms IncrementalHoareTripleChecker+Time [2021-11-05 12:28:21,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 310 Invalid, 43 Unknown, 0 Unchecked, 4.03ms Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 189.16ms Time] [2021-11-05 12:28:21,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-05 12:28:21,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-05 12:28:21,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 170 states have (on average 1.3411764705882352) internal successors, (228), 180 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 12:28:21,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 228 transitions. [2021-11-05 12:28:21,963 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 228 transitions. Word has length 39 [2021-11-05 12:28:21,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:28:21,964 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 228 transitions. [2021-11-05 12:28:21,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 12:28:21,964 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 228 transitions. [2021-11-05 12:28:21,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 12:28:21,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:28:21,965 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] [2021-11-05 12:28:21,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 12:28:21,966 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:28:21,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:28:21,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1277536330, now seen corresponding path program 1 times [2021-11-05 12:28:21,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:28:21,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533585509] [2021-11-05 12:28:21,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:28:21,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:28:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:28:22,230 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 12:28:22,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:28:22,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533585509] [2021-11-05 12:28:22,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533585509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:28:22,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:28:22,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:28:22,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270073321] [2021-11-05 12:28:22,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:28:22,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:28:22,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:28:22,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:28:22,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:28:22,232 INFO L87 Difference]: Start difference. First operand 181 states and 228 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 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 12:28:22,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:28:22,744 INFO L93 Difference]: Finished difference Result 397 states and 508 transitions. [2021-11-05 12:28:22,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:28:22,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 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 12:28:22,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:28:22,746 INFO L225 Difference]: With dead ends: 397 [2021-11-05 12:28:22,746 INFO L226 Difference]: Without dead ends: 241 [2021-11-05 12:28:22,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:28:22,748 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 138 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 411.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.89ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 461.87ms IncrementalHoareTripleChecker+Time [2021-11-05 12:28:22,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 602 Invalid, 121 Unknown, 0 Unchecked, 3.89ms Time], IncrementalHoareTripleChecker [21 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 461.87ms Time] [2021-11-05 12:28:22,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-05 12:28:22,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 193. [2021-11-05 12:28:22,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 182 states have (on average 1.3186813186813187) internal successors, (240), 192 states have internal predecessors, (240), 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 12:28:22,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 240 transitions. [2021-11-05 12:28:22,759 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 240 transitions. Word has length 51 [2021-11-05 12:28:22,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:28:22,759 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 240 transitions. [2021-11-05 12:28:22,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 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 12:28:22,759 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 240 transitions. [2021-11-05 12:28:22,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 12:28:22,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:28:22,766 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 12:28:22,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 12:28:22,767 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:28:22,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:28:22,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1671903116, now seen corresponding path program 1 times [2021-11-05 12:28:22,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:28:22,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198816090] [2021-11-05 12:28:22,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:28:22,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:28:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:28:23,187 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 12:28:23,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:28:23,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198816090] [2021-11-05 12:28:23,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198816090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:28:23,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:28:23,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:28:23,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333447082] [2021-11-05 12:28:23,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:28:23,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:28:23,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:28:23,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:28:23,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:28:23,189 INFO L87 Difference]: Start difference. First operand 193 states and 240 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 12:28:23,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:28:23,484 INFO L93 Difference]: Finished difference Result 314 states and 387 transitions. [2021-11-05 12:28:23,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:28:23,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 12:28:23,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:28:23,487 INFO L225 Difference]: With dead ends: 314 [2021-11-05 12:28:23,488 INFO L226 Difference]: Without dead ends: 193 [2021-11-05 12:28:23,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 149.16ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:28:23,489 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 482 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 168.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.96ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 188.69ms IncrementalHoareTripleChecker+Time [2021-11-05 12:28:23,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 345 Invalid, 45 Unknown, 0 Unchecked, 2.96ms Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 188.69ms Time] [2021-11-05 12:28:23,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-05 12:28:23,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-11-05 12:28:23,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 182 states have (on average 1.3131868131868132) internal successors, (239), 192 states have internal predecessors, (239), 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 12:28:23,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 239 transitions. [2021-11-05 12:28:23,499 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 239 transitions. Word has length 51 [2021-11-05 12:28:23,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:28:23,500 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 239 transitions. [2021-11-05 12:28:23,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 12:28:23,500 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 239 transitions. [2021-11-05 12:28:23,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-05 12:28:23,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:28:23,501 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] [2021-11-05 12:28:23,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 12:28:23,502 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:28:23,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:28:23,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1284348023, now seen corresponding path program 1 times [2021-11-05 12:28:23,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:28:23,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425889621] [2021-11-05 12:28:23,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:28:23,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:28:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:28:23,899 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 12:28:23,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:28:23,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425889621] [2021-11-05 12:28:23,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425889621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:28:23,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:28:23,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:28:23,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109619811] [2021-11-05 12:28:23,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:28:23,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:28:23,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:28:23,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:28:23,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:28:23,901 INFO L87 Difference]: Start difference. First operand 193 states and 239 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 12:28:24,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:28:24,324 INFO L93 Difference]: Finished difference Result 265 states and 320 transitions. [2021-11-05 12:28:24,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 12:28:24,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 57 [2021-11-05 12:28:24,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:28:24,325 INFO L225 Difference]: With dead ends: 265 [2021-11-05 12:28:24,325 INFO L226 Difference]: Without dead ends: 193 [2021-11-05 12:28:24,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 272.35ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:28:24,327 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 624 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 211.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.09ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 227.58ms IncrementalHoareTripleChecker+Time [2021-11-05 12:28:24,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 393 Invalid, 58 Unknown, 0 Unchecked, 3.09ms Time], IncrementalHoareTripleChecker [6 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 227.58ms Time] [2021-11-05 12:28:24,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-05 12:28:24,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-11-05 12:28:24,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 182 states have (on average 1.3021978021978022) internal successors, (237), 192 states have internal predecessors, (237), 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 12:28:24,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 237 transitions. [2021-11-05 12:28:24,337 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 237 transitions. Word has length 57 [2021-11-05 12:28:24,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:28:24,338 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 237 transitions. [2021-11-05 12:28:24,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 12:28:24,338 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 237 transitions. [2021-11-05 12:28:24,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-05 12:28:24,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:28:24,343 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] [2021-11-05 12:28:24,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 12:28:24,344 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:28:24,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:28:24,345 INFO L85 PathProgramCache]: Analyzing trace with hash 718341164, now seen corresponding path program 1 times [2021-11-05 12:28:24,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:28:24,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107733288] [2021-11-05 12:28:24,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:28:24,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:28:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:28:25,061 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 12:28:25,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:28:25,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107733288] [2021-11-05 12:28:25,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107733288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:28:25,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:28:25,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:28:25,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363922768] [2021-11-05 12:28:25,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:28:25,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:28:25,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:28:25,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:28:25,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:28:25,063 INFO L87 Difference]: Start difference. First operand 193 states and 237 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 12:28:25,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:28:25,917 INFO L93 Difference]: Finished difference Result 310 states and 367 transitions. [2021-11-05 12:28:25,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:28:25,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 63 [2021-11-05 12:28:25,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:28:25,919 INFO L225 Difference]: With dead ends: 310 [2021-11-05 12:28:25,919 INFO L226 Difference]: Without dead ends: 297 [2021-11-05 12:28:25,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 294.81ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:28:25,921 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 228 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 603.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.11ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 657.67ms IncrementalHoareTripleChecker+Time [2021-11-05 12:28:25,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 851 Invalid, 201 Unknown, 0 Unchecked, 6.11ms Time], IncrementalHoareTripleChecker [40 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 657.67ms Time] [2021-11-05 12:28:25,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-05 12:28:25,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 199. [2021-11-05 12:28:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 188 states have (on average 1.2872340425531914) internal successors, (242), 198 states have internal predecessors, (242), 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 12:28:25,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 242 transitions. [2021-11-05 12:28:25,932 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 242 transitions. Word has length 63 [2021-11-05 12:28:25,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:28:25,932 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 242 transitions. [2021-11-05 12:28:25,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 12:28:25,933 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 242 transitions. [2021-11-05 12:28:25,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 12:28:25,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:28:25,934 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, 1, 1] [2021-11-05 12:28:25,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 12:28:25,935 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:28:25,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:28:25,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1235696670, now seen corresponding path program 1 times [2021-11-05 12:28:25,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:28:25,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592288987] [2021-11-05 12:28:25,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:28:25,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:28:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:28:26,572 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 12:28:26,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:28:26,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592288987] [2021-11-05 12:28:26,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592288987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:28:26,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:28:26,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:28:26,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327532011] [2021-11-05 12:28:26,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:28:26,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:28:26,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:28:26,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:28:26,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:28:26,574 INFO L87 Difference]: Start difference. First operand 199 states and 242 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:28:28,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:30,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:32,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:28:32,054 INFO L93 Difference]: Finished difference Result 595 states and 724 transitions. [2021-11-05 12:28:32,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:28:32,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 67 [2021-11-05 12:28:32,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:28:32,057 INFO L225 Difference]: With dead ends: 595 [2021-11-05 12:28:32,057 INFO L226 Difference]: Without dead ends: 418 [2021-11-05 12:28:32,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 144.79ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:28:32,058 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 386 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 27 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5039.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.84ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5352.85ms IncrementalHoareTripleChecker+Time [2021-11-05 12:28:32,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 567 Invalid, 299 Unknown, 0 Unchecked, 6.84ms Time], IncrementalHoareTripleChecker [27 Valid, 270 Invalid, 2 Unknown, 0 Unchecked, 5352.85ms Time] [2021-11-05 12:28:32,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-11-05 12:28:32,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 239. [2021-11-05 12:28:32,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 228 states have (on average 1.2850877192982457) internal successors, (293), 238 states have internal predecessors, (293), 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 12:28:32,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 293 transitions. [2021-11-05 12:28:32,069 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 293 transitions. Word has length 67 [2021-11-05 12:28:32,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:28:32,070 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 293 transitions. [2021-11-05 12:28:32,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:28:32,070 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 293 transitions. [2021-11-05 12:28:32,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 12:28:32,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:28:32,071 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, 1, 1] [2021-11-05 12:28:32,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 12:28:32,072 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:28:32,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:28:32,080 INFO L85 PathProgramCache]: Analyzing trace with hash -555638300, now seen corresponding path program 1 times [2021-11-05 12:28:32,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:28:32,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018576144] [2021-11-05 12:28:32,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:28:32,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:28:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:28:33,089 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 12:28:33,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:28:33,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018576144] [2021-11-05 12:28:33,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018576144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:28:33,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:28:33,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:28:33,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997888135] [2021-11-05 12:28:33,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:28:33,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:28:33,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:28:33,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:28:33,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:28:33,091 INFO L87 Difference]: Start difference. First operand 239 states and 293 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 12:28:35,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:37,260 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:38,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:28:38,743 INFO L93 Difference]: Finished difference Result 505 states and 610 transitions. [2021-11-05 12:28:38,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 12:28:38,744 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 67 [2021-11-05 12:28:38,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:28:38,746 INFO L225 Difference]: With dead ends: 505 [2021-11-05 12:28:38,746 INFO L226 Difference]: Without dead ends: 366 [2021-11-05 12:28:38,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 513.09ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:28:38,747 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 528 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 25 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5031.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.66ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5337.20ms IncrementalHoareTripleChecker+Time [2021-11-05 12:28:38,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 748 Invalid, 289 Unknown, 0 Unchecked, 7.66ms Time], IncrementalHoareTripleChecker [25 Valid, 262 Invalid, 2 Unknown, 0 Unchecked, 5337.20ms Time] [2021-11-05 12:28:38,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-05 12:28:38,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 254. [2021-11-05 12:28:38,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 243 states have (on average 1.2798353909465021) internal successors, (311), 253 states have internal predecessors, (311), 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 12:28:38,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 311 transitions. [2021-11-05 12:28:38,756 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 311 transitions. Word has length 67 [2021-11-05 12:28:38,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:28:38,757 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 311 transitions. [2021-11-05 12:28:38,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 12:28:38,757 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 311 transitions. [2021-11-05 12:28:38,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 12:28:38,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:28:38,758 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, 1, 1] [2021-11-05 12:28:38,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 12:28:38,759 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:28:38,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:28:38,759 INFO L85 PathProgramCache]: Analyzing trace with hash -2143986202, now seen corresponding path program 1 times [2021-11-05 12:28:38,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:28:38,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55202401] [2021-11-05 12:28:38,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:28:38,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:28:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:28:39,762 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 12:28:39,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:28:39,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55202401] [2021-11-05 12:28:39,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55202401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:28:39,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:28:39,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:28:39,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855347222] [2021-11-05 12:28:39,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:28:39,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:28:39,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:28:39,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:28:39,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:28:39,764 INFO L87 Difference]: Start difference. First operand 254 states and 311 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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 12:28:41,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:43,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:46,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:48,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:50,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:28:50,774 INFO L93 Difference]: Finished difference Result 455 states and 547 transitions. [2021-11-05 12:28:50,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 12:28:50,775 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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 67 [2021-11-05 12:28:50,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:28:50,777 INFO L225 Difference]: With dead ends: 455 [2021-11-05 12:28:50,777 INFO L226 Difference]: Without dead ends: 377 [2021-11-05 12:28:50,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 763.26ms TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:28:50,778 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 716 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 39 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9902.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.23ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10531.13ms IncrementalHoareTripleChecker+Time [2021-11-05 12:28:50,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [716 Valid, 1231 Invalid, 566 Unknown, 0 Unchecked, 11.23ms Time], IncrementalHoareTripleChecker [39 Valid, 523 Invalid, 4 Unknown, 0 Unchecked, 10531.13ms Time] [2021-11-05 12:28:50,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-05 12:28:50,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 259. [2021-11-05 12:28:50,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 248 states have (on average 1.282258064516129) internal successors, (318), 258 states have internal predecessors, (318), 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 12:28:50,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 318 transitions. [2021-11-05 12:28:50,814 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 318 transitions. Word has length 67 [2021-11-05 12:28:50,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:28:50,815 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 318 transitions. [2021-11-05 12:28:50,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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 12:28:50,815 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 318 transitions. [2021-11-05 12:28:50,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 12:28:50,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:28:50,817 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, 1, 1] [2021-11-05 12:28:50,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 12:28:50,817 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:28:50,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:28:50,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1892815656, now seen corresponding path program 1 times [2021-11-05 12:28:50,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:28:50,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141058550] [2021-11-05 12:28:50,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:28:50,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:28:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:28:53,807 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 12:28:53,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:28:53,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141058550] [2021-11-05 12:28:53,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141058550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:28:53,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:28:53,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:28:53,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696777285] [2021-11-05 12:28:53,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:28:53,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:28:53,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:28:53,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:28:53,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:28:53,809 INFO L87 Difference]: Start difference. First operand 259 states and 318 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 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 12:28:55,869 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:28:57,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:00,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:02,185 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:04,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:04,778 INFO L93 Difference]: Finished difference Result 493 states and 593 transitions. [2021-11-05 12:29:04,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:29:04,779 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 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 67 [2021-11-05 12:29:04,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:04,781 INFO L225 Difference]: With dead ends: 493 [2021-11-05 12:29:04,781 INFO L226 Difference]: Without dead ends: 402 [2021-11-05 12:29:04,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1378.62ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-11-05 12:29:04,782 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 1239 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 45 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9514.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.82ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10043.16ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:04,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1239 Valid, 1141 Invalid, 516 Unknown, 0 Unchecked, 8.82ms Time], IncrementalHoareTripleChecker [45 Valid, 467 Invalid, 4 Unknown, 0 Unchecked, 10043.16ms Time] [2021-11-05 12:29:04,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-11-05 12:29:04,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 294. [2021-11-05 12:29:04,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 283 states have (on average 1.2720848056537102) internal successors, (360), 293 states have internal predecessors, (360), 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 12:29:04,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 360 transitions. [2021-11-05 12:29:04,794 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 360 transitions. Word has length 67 [2021-11-05 12:29:04,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:04,795 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 360 transitions. [2021-11-05 12:29:04,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 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 12:29:04,795 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 360 transitions. [2021-11-05 12:29:04,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 12:29:04,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:04,796 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, 1, 1] [2021-11-05 12:29:04,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 12:29:04,797 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:29:04,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:04,798 INFO L85 PathProgramCache]: Analyzing trace with hash 459805474, now seen corresponding path program 1 times [2021-11-05 12:29:04,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:04,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889383244] [2021-11-05 12:29:04,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:04,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:05,921 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 12:29:05,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:05,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889383244] [2021-11-05 12:29:05,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889383244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:05,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:05,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:29:05,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706715533] [2021-11-05 12:29:05,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:05,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:29:05,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:05,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:29:05,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:29:05,923 INFO L87 Difference]: Start difference. First operand 294 states and 360 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 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 12:29:07,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:10,082 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:12,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:12,540 INFO L93 Difference]: Finished difference Result 567 states and 683 transitions. [2021-11-05 12:29:12,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:29:12,541 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 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 67 [2021-11-05 12:29:12,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:12,542 INFO L225 Difference]: With dead ends: 567 [2021-11-05 12:29:12,542 INFO L226 Difference]: Without dead ends: 421 [2021-11-05 12:29:12,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 981.07ms TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:29:12,543 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 965 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 57 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5584.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.86ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5981.70ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:12,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 1152 Invalid, 533 Unknown, 0 Unchecked, 6.86ms Time], IncrementalHoareTripleChecker [57 Valid, 474 Invalid, 2 Unknown, 0 Unchecked, 5981.70ms Time] [2021-11-05 12:29:12,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-05 12:29:12,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 306. [2021-11-05 12:29:12,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 295 states have (on average 1.271186440677966) internal successors, (375), 305 states have internal predecessors, (375), 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 12:29:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 375 transitions. [2021-11-05 12:29:12,554 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 375 transitions. Word has length 67 [2021-11-05 12:29:12,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:12,554 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 375 transitions. [2021-11-05 12:29:12,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 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 12:29:12,554 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 375 transitions. [2021-11-05 12:29:12,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 12:29:12,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:12,555 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, 1, 1] [2021-11-05 12:29:12,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 12:29:12,556 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:29:12,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:12,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1139863844, now seen corresponding path program 1 times [2021-11-05 12:29:12,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:12,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950426354] [2021-11-05 12:29:12,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:12,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:13,072 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 12:29:13,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:13,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950426354] [2021-11-05 12:29:13,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950426354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:13,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:13,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:29:13,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456157529] [2021-11-05 12:29:13,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:13,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:29:13,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:13,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:29:13,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:29:13,074 INFO L87 Difference]: Start difference. First operand 306 states and 375 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:29:15,138 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:17,244 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:18,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:18,453 INFO L93 Difference]: Finished difference Result 749 states and 903 transitions. [2021-11-05 12:29:18,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:29:18,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 67 [2021-11-05 12:29:18,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:18,456 INFO L225 Difference]: With dead ends: 749 [2021-11-05 12:29:18,456 INFO L226 Difference]: Without dead ends: 472 [2021-11-05 12:29:18,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 102.49ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:29:18,457 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 171 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 26 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5034.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.95ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5312.57ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:18,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 916 Invalid, 319 Unknown, 0 Unchecked, 3.95ms Time], IncrementalHoareTripleChecker [26 Valid, 291 Invalid, 2 Unknown, 0 Unchecked, 5312.57ms Time] [2021-11-05 12:29:18,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-11-05 12:29:18,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 306. [2021-11-05 12:29:18,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 295 states have (on average 1.240677966101695) internal successors, (366), 305 states have internal predecessors, (366), 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 12:29:18,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 366 transitions. [2021-11-05 12:29:18,469 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 366 transitions. Word has length 67 [2021-11-05 12:29:18,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:18,469 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 366 transitions. [2021-11-05 12:29:18,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:29:18,470 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 366 transitions. [2021-11-05 12:29:18,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-05 12:29:18,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:18,471 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, 1, 1, 1] [2021-11-05 12:29:18,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 12:29:18,471 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:29:18,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:18,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1970832183, now seen corresponding path program 1 times [2021-11-05 12:29:18,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:18,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930462515] [2021-11-05 12:29:18,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:18,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:18,783 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 12:29:18,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:18,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930462515] [2021-11-05 12:29:18,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930462515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:18,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:18,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:29:18,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422356874] [2021-11-05 12:29:18,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:18,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:29:18,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:18,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:29:18,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:29:18,785 INFO L87 Difference]: Start difference. First operand 306 states and 366 transitions. Second operand has 5 states, 5 states have (on average 13.6) 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 12:29:18,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:18,915 INFO L93 Difference]: Finished difference Result 393 states and 465 transitions. [2021-11-05 12:29:18,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:29:18,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) 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 68 [2021-11-05 12:29:18,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:18,917 INFO L225 Difference]: With dead ends: 393 [2021-11-05 12:29:18,917 INFO L226 Difference]: Without dead ends: 357 [2021-11-05 12:29:18,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 121.85ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:29:18,919 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 103 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.78ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.64ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:18,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 881 Invalid, 16 Unknown, 0 Unchecked, 0.78ms Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 56.64ms Time] [2021-11-05 12:29:18,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-05 12:29:18,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 309. [2021-11-05 12:29:18,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 298 states have (on average 1.238255033557047) internal successors, (369), 308 states have internal predecessors, (369), 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 12:29:18,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 369 transitions. [2021-11-05 12:29:18,930 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 369 transitions. Word has length 68 [2021-11-05 12:29:18,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:18,930 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 369 transitions. [2021-11-05 12:29:18,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) 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 12:29:18,931 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 369 transitions. [2021-11-05 12:29:18,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-05 12:29:18,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:18,932 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, 1, 1, 1, 1] [2021-11-05 12:29:18,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 12:29:18,932 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:29:18,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:18,933 INFO L85 PathProgramCache]: Analyzing trace with hash -965360329, now seen corresponding path program 1 times [2021-11-05 12:29:18,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:18,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304437991] [2021-11-05 12:29:18,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:18,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:19,477 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 12:29:19,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:19,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304437991] [2021-11-05 12:29:19,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304437991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:19,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:19,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:29:19,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922820461] [2021-11-05 12:29:19,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:19,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:29:19,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:19,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:29:19,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:29:19,478 INFO L87 Difference]: Start difference. First operand 309 states and 369 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 12:29:19,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:19,918 INFO L93 Difference]: Finished difference Result 333 states and 397 transitions. [2021-11-05 12:29:19,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:29:19,919 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 69 [2021-11-05 12:29:19,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:19,920 INFO L225 Difference]: With dead ends: 333 [2021-11-05 12:29:19,920 INFO L226 Difference]: Without dead ends: 331 [2021-11-05 12:29:19,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 308.17ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:29:19,921 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 270 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 246.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.81ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 263.78ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:19,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 609 Invalid, 68 Unknown, 0 Unchecked, 1.81ms Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 263.78ms Time] [2021-11-05 12:29:19,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-11-05 12:29:19,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 307. [2021-11-05 12:29:19,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 297 states have (on average 1.2356902356902357) internal successors, (367), 306 states have internal predecessors, (367), 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 12:29:19,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 367 transitions. [2021-11-05 12:29:19,934 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 367 transitions. Word has length 69 [2021-11-05 12:29:19,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:19,934 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 367 transitions. [2021-11-05 12:29:19,934 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 12:29:19,934 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 367 transitions. [2021-11-05 12:29:19,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-05 12:29:19,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:19,935 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, 1, 1, 1, 1] [2021-11-05 12:29:19,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 12:29:19,936 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:29:19,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:19,936 INFO L85 PathProgramCache]: Analyzing trace with hash 608522333, now seen corresponding path program 1 times [2021-11-05 12:29:19,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:19,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997024760] [2021-11-05 12:29:19,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:19,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:20,512 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 12:29:20,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:20,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997024760] [2021-11-05 12:29:20,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997024760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:20,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:20,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:29:20,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658467190] [2021-11-05 12:29:20,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:20,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:29:20,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:20,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:29:20,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:29:20,514 INFO L87 Difference]: Start difference. First operand 307 states and 367 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 12:29:22,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:22,202 INFO L93 Difference]: Finished difference Result 457 states and 530 transitions. [2021-11-05 12:29:22,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:29:22,203 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 69 [2021-11-05 12:29:22,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:22,205 INFO L225 Difference]: With dead ends: 457 [2021-11-05 12:29:22,205 INFO L226 Difference]: Without dead ends: 440 [2021-11-05 12:29:22,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 621.69ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:29:22,206 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 252 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1135.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.37ms SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1209.44ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:22,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 1160 Invalid, 433 Unknown, 0 Unchecked, 5.37ms Time], IncrementalHoareTripleChecker [90 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 1209.44ms Time] [2021-11-05 12:29:22,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-05 12:29:22,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 311. [2021-11-05 12:29:22,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 301 states have (on average 1.2292358803986712) internal successors, (370), 310 states have internal predecessors, (370), 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 12:29:22,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 370 transitions. [2021-11-05 12:29:22,217 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 370 transitions. Word has length 69 [2021-11-05 12:29:22,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:22,217 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 370 transitions. [2021-11-05 12:29:22,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 12:29:22,218 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 370 transitions. [2021-11-05 12:29:22,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-05 12:29:22,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:22,218 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, 1, 1, 1, 1] [2021-11-05 12:29:22,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 12:29:22,219 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:29:22,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:22,219 INFO L85 PathProgramCache]: Analyzing trace with hash -200824293, now seen corresponding path program 1 times [2021-11-05 12:29:22,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:22,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342456013] [2021-11-05 12:29:22,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:22,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:23,353 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 12:29:23,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:23,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342456013] [2021-11-05 12:29:23,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342456013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:23,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:23,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:29:23,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81030378] [2021-11-05 12:29:23,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:23,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:29:23,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:23,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:29:23,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:29:23,355 INFO L87 Difference]: Start difference. First operand 311 states and 370 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 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 12:29:25,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:27,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:29,672 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:31,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:33,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:36,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:40,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:40,007 INFO L93 Difference]: Finished difference Result 820 states and 958 transitions. [2021-11-05 12:29:40,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-05 12:29:40,008 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 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 69 [2021-11-05 12:29:40,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:40,010 INFO L225 Difference]: With dead ends: 820 [2021-11-05 12:29:40,010 INFO L226 Difference]: Without dead ends: 539 [2021-11-05 12:29:40,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1457.04ms TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2021-11-05 12:29:40,012 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 1186 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 96 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14626.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.46ms SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15549.69ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:40,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1186 Valid, 1152 Invalid, 881 Unknown, 0 Unchecked, 10.46ms Time], IncrementalHoareTripleChecker [96 Valid, 779 Invalid, 6 Unknown, 0 Unchecked, 15549.69ms Time] [2021-11-05 12:29:40,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-11-05 12:29:40,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 346. [2021-11-05 12:29:40,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 336 states have (on average 1.2291666666666667) internal successors, (413), 345 states have internal predecessors, (413), 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 12:29:40,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 413 transitions. [2021-11-05 12:29:40,026 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 413 transitions. Word has length 69 [2021-11-05 12:29:40,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:40,027 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 413 transitions. [2021-11-05 12:29:40,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 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 12:29:40,027 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 413 transitions. [2021-11-05 12:29:40,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-05 12:29:40,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:40,028 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, 1, 1, 1, 1, 1, 1] [2021-11-05 12:29:40,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 12:29:40,029 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:29:40,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:40,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1798297, now seen corresponding path program 1 times [2021-11-05 12:29:40,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:40,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440997896] [2021-11-05 12:29:40,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:40,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:43,520 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 12:29:43,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:43,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440997896] [2021-11-05 12:29:43,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440997896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:43,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:43,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:29:43,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701115015] [2021-11-05 12:29:43,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:43,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:29:43,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:43,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:29:43,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:29:43,523 INFO L87 Difference]: Start difference. First operand 346 states and 413 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 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 12:29:45,570 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:47,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:49,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:51,894 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:54,004 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:56,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:56,106 INFO L93 Difference]: Finished difference Result 608 states and 723 transitions. [2021-11-05 12:29:56,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 12:29:56,107 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 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 71 [2021-11-05 12:29:56,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:56,109 INFO L225 Difference]: With dead ends: 608 [2021-11-05 12:29:56,128 INFO L226 Difference]: Without dead ends: 606 [2021-11-05 12:29:56,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1289.03ms TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:29:56,130 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 748 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 28 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11254.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.75ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11891.55ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:56,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 925 Invalid, 393 Unknown, 0 Unchecked, 6.75ms Time], IncrementalHoareTripleChecker [28 Valid, 360 Invalid, 5 Unknown, 0 Unchecked, 11891.55ms Time] [2021-11-05 12:29:56,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-11-05 12:29:56,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 516. [2021-11-05 12:29:56,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 506 states have (on average 1.2292490118577075) internal successors, (622), 515 states have internal predecessors, (622), 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 12:29:56,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 622 transitions. [2021-11-05 12:29:56,153 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 622 transitions. Word has length 71 [2021-11-05 12:29:56,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:56,154 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 622 transitions. [2021-11-05 12:29:56,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 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 12:29:56,154 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 622 transitions. [2021-11-05 12:29:56,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-05 12:29:56,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:56,155 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, 1, 1, 1, 1, 1, 1] [2021-11-05 12:29:56,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 12:29:56,156 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:29:56,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:56,156 INFO L85 PathProgramCache]: Analyzing trace with hash -587952146, now seen corresponding path program 1 times [2021-11-05 12:29:56,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:56,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112808290] [2021-11-05 12:29:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:56,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:56,804 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 12:29:56,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:56,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112808290] [2021-11-05 12:29:56,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112808290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:56,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:56,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:29:56,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303969339] [2021-11-05 12:29:56,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:56,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:29:56,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:56,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:29:56,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:29:56,806 INFO L87 Difference]: Start difference. First operand 516 states and 622 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 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 12:29:57,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:57,845 INFO L93 Difference]: Finished difference Result 1103 states and 1311 transitions. [2021-11-05 12:29:57,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:29:57,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 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 71 [2021-11-05 12:29:57,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:57,848 INFO L225 Difference]: With dead ends: 1103 [2021-11-05 12:29:57,848 INFO L226 Difference]: Without dead ends: 593 [2021-11-05 12:29:57,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 301.10ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:29:57,850 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 116 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 803.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.14ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 859.44ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:57,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 1331 Invalid, 269 Unknown, 0 Unchecked, 4.14ms Time], IncrementalHoareTripleChecker [36 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 859.44ms Time] [2021-11-05 12:29:57,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-11-05 12:29:57,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 512. [2021-11-05 12:29:57,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 502 states have (on average 1.207171314741036) internal successors, (606), 511 states have internal predecessors, (606), 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 12:29:57,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 606 transitions. [2021-11-05 12:29:57,883 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 606 transitions. Word has length 71 [2021-11-05 12:29:57,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:57,884 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 606 transitions. [2021-11-05 12:29:57,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 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 12:29:57,884 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 606 transitions. [2021-11-05 12:29:57,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-05 12:29:57,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:57,885 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:29:57,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 12:29:57,886 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:29:57,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:57,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1728302235, now seen corresponding path program 1 times [2021-11-05 12:29:57,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:57,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760504801] [2021-11-05 12:29:57,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:57,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:03,536 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 12:30:03,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:03,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760504801] [2021-11-05 12:30:03,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760504801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:03,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:03,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:30:03,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253323152] [2021-11-05 12:30:03,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:03,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:30:03,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:03,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:30:03,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:30:03,538 INFO L87 Difference]: Start difference. First operand 512 states and 606 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 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 12:30:05,598 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:07,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:30:07,096 INFO L93 Difference]: Finished difference Result 1053 states and 1239 transitions. [2021-11-05 12:30:07,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:30:07,097 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 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 12:30:07,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:30:07,098 INFO L225 Difference]: With dead ends: 1053 [2021-11-05 12:30:07,098 INFO L226 Difference]: Without dead ends: 578 [2021-11-05 12:30:07,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 623.00ms TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:30:07,100 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 479 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2931.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.90ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3136.05ms IncrementalHoareTripleChecker+Time [2021-11-05 12:30:07,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 868 Invalid, 284 Unknown, 0 Unchecked, 5.90ms Time], IncrementalHoareTripleChecker [24 Valid, 259 Invalid, 1 Unknown, 0 Unchecked, 3136.05ms Time] [2021-11-05 12:30:07,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-11-05 12:30:07,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 504. [2021-11-05 12:30:07,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 494 states have (on average 1.2024291497975708) internal successors, (594), 503 states have internal predecessors, (594), 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 12:30:07,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 594 transitions. [2021-11-05 12:30:07,119 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 594 transitions. Word has length 73 [2021-11-05 12:30:07,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:30:07,120 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 594 transitions. [2021-11-05 12:30:07,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 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 12:30:07,120 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 594 transitions. [2021-11-05 12:30:07,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-05 12:30:07,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:07,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:30:07,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 12:30:07,122 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:30:07,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:07,123 INFO L85 PathProgramCache]: Analyzing trace with hash -869292575, now seen corresponding path program 1 times [2021-11-05 12:30:07,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:07,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138131918] [2021-11-05 12:30:07,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:07,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:07,330 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 12:30:07,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:07,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138131918] [2021-11-05 12:30:07,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138131918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:07,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:07,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:30:07,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416973653] [2021-11-05 12:30:07,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:07,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:30:07,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:07,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:30:07,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:30:07,332 INFO L87 Difference]: Start difference. First operand 504 states and 594 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 12:30:07,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:30:07,728 INFO L93 Difference]: Finished difference Result 965 states and 1132 transitions. [2021-11-05 12:30:07,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:30:07,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 12:30:07,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:30:07,730 INFO L225 Difference]: With dead ends: 965 [2021-11-05 12:30:07,730 INFO L226 Difference]: Without dead ends: 456 [2021-11-05 12:30:07,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.37ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:30:07,731 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 30 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 309.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.80ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 333.85ms IncrementalHoareTripleChecker+Time [2021-11-05 12:30:07,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 570 Invalid, 102 Unknown, 0 Unchecked, 1.80ms Time], IncrementalHoareTripleChecker [17 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 333.85ms Time] [2021-11-05 12:30:07,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-05 12:30:07,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 432. [2021-11-05 12:30:07,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 422 states have (on average 1.1872037914691944) internal successors, (501), 431 states have internal predecessors, (501), 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 12:30:07,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 501 transitions. [2021-11-05 12:30:07,748 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 501 transitions. Word has length 80 [2021-11-05 12:30:07,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:30:07,749 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 501 transitions. [2021-11-05 12:30:07,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 12:30:07,749 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 501 transitions. [2021-11-05 12:30:07,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-05 12:30:07,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:07,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:30:07,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 12:30:07,751 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:30:07,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:07,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1530248741, now seen corresponding path program 1 times [2021-11-05 12:30:07,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:07,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731105365] [2021-11-05 12:30:07,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:07,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:08,684 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 12:30:08,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:08,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731105365] [2021-11-05 12:30:08,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731105365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:08,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:08,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:30:08,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900464839] [2021-11-05 12:30:08,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:08,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:30:08,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:08,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:30:08,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:30:08,686 INFO L87 Difference]: Start difference. First operand 432 states and 501 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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 12:30:10,751 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:12,899 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:14,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:30:14,561 INFO L93 Difference]: Finished difference Result 999 states and 1152 transitions. [2021-11-05 12:30:14,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:30:14,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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 12:30:14,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:30:14,564 INFO L225 Difference]: With dead ends: 999 [2021-11-05 12:30:14,564 INFO L226 Difference]: Without dead ends: 729 [2021-11-05 12:30:14,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 355.82ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:30:14,565 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 270 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5204.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.55ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5587.74ms IncrementalHoareTripleChecker+Time [2021-11-05 12:30:14,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 1259 Invalid, 368 Unknown, 0 Unchecked, 5.55ms Time], IncrementalHoareTripleChecker [15 Valid, 351 Invalid, 2 Unknown, 0 Unchecked, 5587.74ms Time] [2021-11-05 12:30:14,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-11-05 12:30:14,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 440. [2021-11-05 12:30:14,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 430 states have (on average 1.1837209302325582) internal successors, (509), 439 states have internal predecessors, (509), 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 12:30:14,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 509 transitions. [2021-11-05 12:30:14,587 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 509 transitions. Word has length 80 [2021-11-05 12:30:14,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:30:14,587 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 509 transitions. [2021-11-05 12:30:14,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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 12:30:14,588 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 509 transitions. [2021-11-05 12:30:14,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-05 12:30:14,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:14,589 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:30:14,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-05 12:30:14,589 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:30:14,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:14,590 INFO L85 PathProgramCache]: Analyzing trace with hash 2090948519, now seen corresponding path program 1 times [2021-11-05 12:30:14,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:14,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276257483] [2021-11-05 12:30:14,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:14,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:19,582 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 12:30:19,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:19,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276257483] [2021-11-05 12:30:19,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276257483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:19,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:19,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:30:19,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209915264] [2021-11-05 12:30:19,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:19,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:30:19,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:19,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:30:19,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:30:19,584 INFO L87 Difference]: Start difference. First operand 440 states and 509 transitions. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 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 12:30:21,630 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:23,773 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:25,866 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:27,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:30,131 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:32,232 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:36,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:30:36,296 INFO L93 Difference]: Finished difference Result 898 states and 1037 transitions. [2021-11-05 12:30:36,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-05 12:30:36,297 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 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 12:30:36,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:30:36,300 INFO L225 Difference]: With dead ends: 898 [2021-11-05 12:30:36,300 INFO L226 Difference]: Without dead ends: 848 [2021-11-05 12:30:36,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3810.88ms TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2021-11-05 12:30:36,306 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 1487 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 37 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13440.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.00ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14258.87ms IncrementalHoareTripleChecker+Time [2021-11-05 12:30:36,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 1400 Invalid, 476 Unknown, 0 Unchecked, 8.00ms Time], IncrementalHoareTripleChecker [37 Valid, 433 Invalid, 6 Unknown, 0 Unchecked, 14258.87ms Time] [2021-11-05 12:30:36,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2021-11-05 12:30:36,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 633. [2021-11-05 12:30:36,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 623 states have (on average 1.1829855537720706) internal successors, (737), 632 states have internal predecessors, (737), 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 12:30:36,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 737 transitions. [2021-11-05 12:30:36,332 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 737 transitions. Word has length 80 [2021-11-05 12:30:36,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:30:36,332 INFO L470 AbstractCegarLoop]: Abstraction has 633 states and 737 transitions. [2021-11-05 12:30:36,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 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 12:30:36,333 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 737 transitions. [2021-11-05 12:30:36,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-05 12:30:36,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:36,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:30:36,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-05 12:30:36,335 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:30:36,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:36,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1700948645, now seen corresponding path program 1 times [2021-11-05 12:30:36,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:36,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756031419] [2021-11-05 12:30:36,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:36,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:36,557 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 12:30:36,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:36,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756031419] [2021-11-05 12:30:36,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756031419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:36,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:36,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:30:36,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657726843] [2021-11-05 12:30:36,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:36,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:30:36,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:36,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:30:36,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:30:36,559 INFO L87 Difference]: Start difference. First operand 633 states and 737 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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 12:30:36,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:30:36,953 INFO L93 Difference]: Finished difference Result 1218 states and 1405 transitions. [2021-11-05 12:30:36,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:30:36,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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 82 [2021-11-05 12:30:36,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:30:36,955 INFO L225 Difference]: With dead ends: 1218 [2021-11-05 12:30:36,955 INFO L226 Difference]: Without dead ends: 602 [2021-11-05 12:30:36,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:30:36,956 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 148 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 313.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.66ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 336.81ms IncrementalHoareTripleChecker+Time [2021-11-05 12:30:36,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 512 Invalid, 110 Unknown, 0 Unchecked, 1.66ms Time], IncrementalHoareTripleChecker [18 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 336.81ms Time] [2021-11-05 12:30:36,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-05 12:30:36,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 532. [2021-11-05 12:30:36,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 522 states have (on average 1.1494252873563218) internal successors, (600), 531 states have internal predecessors, (600), 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 12:30:36,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 600 transitions. [2021-11-05 12:30:36,982 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 600 transitions. Word has length 82 [2021-11-05 12:30:36,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:30:36,982 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 600 transitions. [2021-11-05 12:30:36,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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 12:30:36,983 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 600 transitions. [2021-11-05 12:30:36,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-05 12:30:36,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:36,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:30:36,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-05 12:30:36,984 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:30:36,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:36,985 INFO L85 PathProgramCache]: Analyzing trace with hash -819891869, now seen corresponding path program 1 times [2021-11-05 12:30:36,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:36,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162332264] [2021-11-05 12:30:36,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:36,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:38,083 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 12:30:38,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:38,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162332264] [2021-11-05 12:30:38,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162332264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:38,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:38,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:30:38,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075993945] [2021-11-05 12:30:38,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:38,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:30:38,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:38,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:30:38,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:30:38,084 INFO L87 Difference]: Start difference. First operand 532 states and 600 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 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 12:30:40,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:41,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:30:41,884 INFO L93 Difference]: Finished difference Result 1042 states and 1184 transitions. [2021-11-05 12:30:41,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 12:30:41,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 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 82 [2021-11-05 12:30:41,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:30:41,886 INFO L225 Difference]: With dead ends: 1042 [2021-11-05 12:30:41,886 INFO L226 Difference]: Without dead ends: 773 [2021-11-05 12:30:41,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 591.70ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:30:41,887 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 272 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3186.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.11ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3389.07ms IncrementalHoareTripleChecker+Time [2021-11-05 12:30:41,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 994 Invalid, 386 Unknown, 0 Unchecked, 5.11ms Time], IncrementalHoareTripleChecker [16 Valid, 369 Invalid, 1 Unknown, 0 Unchecked, 3389.07ms Time] [2021-11-05 12:30:41,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2021-11-05 12:30:41,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 562. [2021-11-05 12:30:41,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 552 states have (on average 1.141304347826087) internal successors, (630), 561 states have internal predecessors, (630), 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 12:30:41,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 630 transitions. [2021-11-05 12:30:41,913 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 630 transitions. Word has length 82 [2021-11-05 12:30:41,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:30:41,914 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 630 transitions. [2021-11-05 12:30:41,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 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 12:30:41,914 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 630 transitions. [2021-11-05 12:30:41,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-05 12:30:41,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:41,915 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:30:41,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-05 12:30:41,916 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:30:41,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:41,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1886727525, now seen corresponding path program 1 times [2021-11-05 12:30:41,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:41,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696350480] [2021-11-05 12:30:41,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:41,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:43,027 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 12:30:43,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:43,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696350480] [2021-11-05 12:30:43,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696350480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:43,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:43,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:30:43,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950043387] [2021-11-05 12:30:43,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:43,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:30:43,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:43,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:30:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:30:43,029 INFO L87 Difference]: Start difference. First operand 562 states and 630 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 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 12:30:45,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:47,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:49,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:30:49,742 INFO L93 Difference]: Finished difference Result 885 states and 991 transitions. [2021-11-05 12:30:49,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:30:49,743 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 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 82 [2021-11-05 12:30:49,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:30:49,745 INFO L225 Difference]: With dead ends: 885 [2021-11-05 12:30:49,745 INFO L226 Difference]: Without dead ends: 788 [2021-11-05 12:30:49,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 886.76ms TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-11-05 12:30:49,746 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 640 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 31 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5746.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.75ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6076.76ms IncrementalHoareTripleChecker+Time [2021-11-05 12:30:49,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 1261 Invalid, 595 Unknown, 0 Unchecked, 7.75ms Time], IncrementalHoareTripleChecker [31 Valid, 562 Invalid, 2 Unknown, 0 Unchecked, 6076.76ms Time] [2021-11-05 12:30:49,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-11-05 12:30:49,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 577. [2021-11-05 12:30:49,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 567 states have (on average 1.1481481481481481) internal successors, (651), 576 states have internal predecessors, (651), 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 12:30:49,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 651 transitions. [2021-11-05 12:30:49,772 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 651 transitions. Word has length 82 [2021-11-05 12:30:49,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:30:49,773 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 651 transitions. [2021-11-05 12:30:49,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 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 12:30:49,773 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 651 transitions. [2021-11-05 12:30:49,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-05 12:30:49,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:49,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:30:49,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-05 12:30:49,775 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:30:49,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:49,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1628562087, now seen corresponding path program 1 times [2021-11-05 12:30:49,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:49,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554883772] [2021-11-05 12:30:49,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:49,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:52,845 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 12:30:52,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:52,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554883772] [2021-11-05 12:30:52,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554883772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:52,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:52,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-05 12:30:52,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770111262] [2021-11-05 12:30:52,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:52,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-05 12:30:52,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:52,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-05 12:30:52,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-11-05 12:30:52,848 INFO L87 Difference]: Start difference. First operand 577 states and 651 transitions. Second operand has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 18 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 12:30:54,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:57,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:59,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:01,231 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:03,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:05,489 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:07,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:09,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:15,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:31:15,896 INFO L93 Difference]: Finished difference Result 957 states and 1064 transitions. [2021-11-05 12:31:15,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-05 12:31:15,897 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 18 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 82 [2021-11-05 12:31:15,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:31:15,899 INFO L225 Difference]: With dead ends: 957 [2021-11-05 12:31:15,900 INFO L226 Difference]: Without dead ends: 858 [2021-11-05 12:31:15,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 3151.12ms TimeCoverageRelationStatistics Valid=391, Invalid=1771, Unknown=0, NotChecked=0, Total=2162 [2021-11-05 12:31:15,901 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 1181 mSDsluCounter, 2236 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 70 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19351.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.96ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20529.11ms IncrementalHoareTripleChecker+Time [2021-11-05 12:31:15,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 2488 Invalid, 1214 Unknown, 0 Unchecked, 14.96ms Time], IncrementalHoareTripleChecker [70 Valid, 1136 Invalid, 8 Unknown, 0 Unchecked, 20529.11ms Time] [2021-11-05 12:31:15,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2021-11-05 12:31:15,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 575. [2021-11-05 12:31:15,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 565 states have (on average 1.1486725663716815) internal successors, (649), 574 states have internal predecessors, (649), 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 12:31:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 649 transitions. [2021-11-05 12:31:15,928 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 649 transitions. Word has length 82 [2021-11-05 12:31:15,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:31:15,929 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 649 transitions. [2021-11-05 12:31:15,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 18 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 12:31:15,929 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 649 transitions. [2021-11-05 12:31:15,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-05 12:31:15,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:31:15,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:31:15,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-05 12:31:15,931 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:31:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:31:15,931 INFO L85 PathProgramCache]: Analyzing trace with hash 195551905, now seen corresponding path program 1 times [2021-11-05 12:31:15,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:31:15,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75628619] [2021-11-05 12:31:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:31:15,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:31:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:31:16,957 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 12:31:16,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:31:16,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75628619] [2021-11-05 12:31:16,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75628619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:31:16,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:31:16,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:31:16,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329327086] [2021-11-05 12:31:16,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:31:16,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:31:16,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:31:16,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:31:16,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:31:16,958 INFO L87 Difference]: Start difference. First operand 575 states and 649 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 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 12:31:19,003 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:21,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:23,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:31:23,345 INFO L93 Difference]: Finished difference Result 846 states and 947 transitions. [2021-11-05 12:31:23,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:31:23,345 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 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 82 [2021-11-05 12:31:23,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:31:23,347 INFO L225 Difference]: With dead ends: 846 [2021-11-05 12:31:23,347 INFO L226 Difference]: Without dead ends: 764 [2021-11-05 12:31:23,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 594.07ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:31:23,348 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 349 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 24 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5567.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.37ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5936.98ms IncrementalHoareTripleChecker+Time [2021-11-05 12:31:23,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 1402 Invalid, 559 Unknown, 0 Unchecked, 6.37ms Time], IncrementalHoareTripleChecker [24 Valid, 533 Invalid, 2 Unknown, 0 Unchecked, 5936.98ms Time] [2021-11-05 12:31:23,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-11-05 12:31:23,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 596. [2021-11-05 12:31:23,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 586 states have (on average 1.1433447098976108) internal successors, (670), 595 states have internal predecessors, (670), 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 12:31:23,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 670 transitions. [2021-11-05 12:31:23,374 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 670 transitions. Word has length 82 [2021-11-05 12:31:23,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:31:23,374 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 670 transitions. [2021-11-05 12:31:23,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 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 12:31:23,375 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 670 transitions. [2021-11-05 12:31:23,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-05 12:31:23,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:31:23,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:31:23,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-05 12:31:23,377 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:31:23,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:31:23,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1103336165, now seen corresponding path program 1 times [2021-11-05 12:31:23,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:31:23,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021851435] [2021-11-05 12:31:23,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:31:23,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:31:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:31:24,463 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 12:31:24,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:31:24,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021851435] [2021-11-05 12:31:24,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021851435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:31:24,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:31:24,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:31:24,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744785138] [2021-11-05 12:31:24,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:31:24,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:31:24,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:31:24,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:31:24,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:31:24,465 INFO L87 Difference]: Start difference. First operand 596 states and 670 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 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 12:31:26,517 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:28,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:30,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:32,884 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:35,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:37,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:39,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:31:39,410 INFO L93 Difference]: Finished difference Result 742 states and 826 transitions. [2021-11-05 12:31:39,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 12:31:39,410 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 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 82 [2021-11-05 12:31:39,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:31:39,412 INFO L225 Difference]: With dead ends: 742 [2021-11-05 12:31:39,412 INFO L226 Difference]: Without dead ends: 602 [2021-11-05 12:31:39,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 952.40ms TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:31:39,413 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 477 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 31 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13395.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.41ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14232.48ms IncrementalHoareTripleChecker+Time [2021-11-05 12:31:39,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 1085 Invalid, 488 Unknown, 0 Unchecked, 6.41ms Time], IncrementalHoareTripleChecker [31 Valid, 451 Invalid, 6 Unknown, 0 Unchecked, 14232.48ms Time] [2021-11-05 12:31:39,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-05 12:31:39,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 562. [2021-11-05 12:31:39,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 552 states have (on average 1.1358695652173914) internal successors, (627), 561 states have internal predecessors, (627), 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 12:31:39,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 627 transitions. [2021-11-05 12:31:39,438 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 627 transitions. Word has length 82 [2021-11-05 12:31:39,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:31:39,440 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 627 transitions. [2021-11-05 12:31:39,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 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 12:31:39,440 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 627 transitions. [2021-11-05 12:31:39,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-05 12:31:39,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:31:39,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:31:39,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-05 12:31:39,443 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:31:39,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:31:39,443 INFO L85 PathProgramCache]: Analyzing trace with hash -745433638, now seen corresponding path program 1 times [2021-11-05 12:31:39,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:31:39,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721814408] [2021-11-05 12:31:39,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:31:39,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:31:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:31:40,865 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 12:31:40,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:31:40,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721814408] [2021-11-05 12:31:40,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721814408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:31:40,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:31:40,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:31:40,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997798059] [2021-11-05 12:31:40,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:31:40,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:31:40,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:31:40,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:31:40,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:31:40,866 INFO L87 Difference]: Start difference. First operand 562 states and 627 transitions. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 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 12:31:42,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:45,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:47,160 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:49,284 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:51,405 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:54,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:31:54,845 INFO L93 Difference]: Finished difference Result 671 states and 742 transitions. [2021-11-05 12:31:54,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-05 12:31:54,845 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 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 84 [2021-11-05 12:31:54,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:31:54,847 INFO L225 Difference]: With dead ends: 671 [2021-11-05 12:31:54,847 INFO L226 Difference]: Without dead ends: 632 [2021-11-05 12:31:54,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1725.20ms TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2021-11-05 12:31:54,848 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 734 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 43 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11905.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.06ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12638.87ms IncrementalHoareTripleChecker+Time [2021-11-05 12:31:54,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 1508 Invalid, 662 Unknown, 0 Unchecked, 9.06ms Time], IncrementalHoareTripleChecker [43 Valid, 614 Invalid, 5 Unknown, 0 Unchecked, 12638.87ms Time] [2021-11-05 12:31:54,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-05 12:31:54,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 546. [2021-11-05 12:31:54,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 536 states have (on average 1.1361940298507462) internal successors, (609), 545 states have internal predecessors, (609), 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 12:31:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 609 transitions. [2021-11-05 12:31:54,872 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 609 transitions. Word has length 84 [2021-11-05 12:31:54,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:31:54,872 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 609 transitions. [2021-11-05 12:31:54,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 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 12:31:54,873 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 609 transitions. [2021-11-05 12:31:54,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:31:54,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:31:54,874 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:31:54,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-05 12:31:54,874 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:31:54,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:31:54,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1191985021, now seen corresponding path program 1 times [2021-11-05 12:31:54,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:31:54,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645230133] [2021-11-05 12:31:54,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:31:54,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:31:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:31:57,698 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 12:31:57,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:31:57,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645230133] [2021-11-05 12:31:57,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645230133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:31:57,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:31:57,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-05 12:31:57,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732847117] [2021-11-05 12:31:57,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:31:57,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-05 12:31:57,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:31:57,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-05 12:31:57,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-11-05 12:31:57,700 INFO L87 Difference]: Start difference. First operand 546 states and 609 transitions. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 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 12:31:59,742 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:01,855 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:03,958 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:06,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:08,228 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:10,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:12,468 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:14,593 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:16,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:23,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:32:23,289 INFO L93 Difference]: Finished difference Result 926 states and 1023 transitions. [2021-11-05 12:32:23,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-05 12:32:23,289 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 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 85 [2021-11-05 12:32:23,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:32:23,291 INFO L225 Difference]: With dead ends: 926 [2021-11-05 12:32:23,292 INFO L226 Difference]: Without dead ends: 876 [2021-11-05 12:32:23,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 4705.92ms TimeCoverageRelationStatistics Valid=285, Invalid=1121, Unknown=0, NotChecked=0, Total=1406 [2021-11-05 12:32:23,293 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 895 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 60 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20847.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.31ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22093.28ms IncrementalHoareTripleChecker+Time [2021-11-05 12:32:23,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 2164 Invalid, 959 Unknown, 0 Unchecked, 13.31ms Time], IncrementalHoareTripleChecker [60 Valid, 890 Invalid, 9 Unknown, 0 Unchecked, 22093.28ms Time] [2021-11-05 12:32:23,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-11-05 12:32:23,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 652. [2021-11-05 12:32:23,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 642 states have (on average 1.1370716510903427) internal successors, (730), 651 states have internal predecessors, (730), 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 12:32:23,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 730 transitions. [2021-11-05 12:32:23,321 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 730 transitions. Word has length 85 [2021-11-05 12:32:23,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:32:23,321 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 730 transitions. [2021-11-05 12:32:23,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 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 12:32:23,322 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 730 transitions. [2021-11-05 12:32:23,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:32:23,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:32:23,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:32:23,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-05 12:32:23,323 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:32:23,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:32:23,324 INFO L85 PathProgramCache]: Analyzing trace with hash -831391237, now seen corresponding path program 1 times [2021-11-05 12:32:23,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:32:23,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390033941] [2021-11-05 12:32:23,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:32:23,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:32:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:32:24,740 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 12:32:24,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:32:24,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390033941] [2021-11-05 12:32:24,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390033941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:32:24,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:32:24,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:32:24,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733762036] [2021-11-05 12:32:24,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:32:24,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:32:24,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:32:24,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:32:24,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:32:24,742 INFO L87 Difference]: Start difference. First operand 652 states and 730 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 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 12:32:26,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:28,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:31,138 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:33,224 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:36,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:32:36,237 INFO L93 Difference]: Finished difference Result 837 states and 926 transitions. [2021-11-05 12:32:36,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-05 12:32:36,238 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 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 85 [2021-11-05 12:32:36,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:32:36,239 INFO L225 Difference]: With dead ends: 837 [2021-11-05 12:32:36,240 INFO L226 Difference]: Without dead ends: 619 [2021-11-05 12:32:36,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1508.12ms TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-11-05 12:32:36,241 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 490 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 46 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9941.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.89ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10485.86ms IncrementalHoareTripleChecker+Time [2021-11-05 12:32:36,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 1180 Invalid, 641 Unknown, 0 Unchecked, 7.89ms Time], IncrementalHoareTripleChecker [46 Valid, 591 Invalid, 4 Unknown, 0 Unchecked, 10485.86ms Time] [2021-11-05 12:32:36,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-11-05 12:32:36,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 557. [2021-11-05 12:32:36,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 547 states have (on average 1.13345521023766) internal successors, (620), 556 states have internal predecessors, (620), 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 12:32:36,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 620 transitions. [2021-11-05 12:32:36,268 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 620 transitions. Word has length 85 [2021-11-05 12:32:36,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:32:36,268 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 620 transitions. [2021-11-05 12:32:36,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 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 12:32:36,269 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 620 transitions. [2021-11-05 12:32:36,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:32:36,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:32:36,270 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:32:36,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-05 12:32:36,270 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:32:36,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:32:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash 298498683, now seen corresponding path program 1 times [2021-11-05 12:32:36,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:32:36,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003347540] [2021-11-05 12:32:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:32:36,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:32:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:32:42,558 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 12:32:42,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:32:42,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003347540] [2021-11-05 12:32:42,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003347540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:32:42,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:32:42,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 12:32:42,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190427514] [2021-11-05 12:32:42,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:32:42,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 12:32:42,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:32:42,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 12:32:42,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:32:42,560 INFO L87 Difference]: Start difference. First operand 557 states and 620 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 12:32:44,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:46,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:48,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:50,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:53,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:55,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:57,278 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:59,389 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:04,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:33:04,269 INFO L93 Difference]: Finished difference Result 825 states and 913 transitions. [2021-11-05 12:33:04,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-05 12:33:04,270 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 85 [2021-11-05 12:33:04,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:33:04,271 INFO L225 Difference]: With dead ends: 825 [2021-11-05 12:33:04,271 INFO L226 Difference]: Without dead ends: 599 [2021-11-05 12:33:04,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 3236.46ms TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2021-11-05 12:33:04,279 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 1006 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 56 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18085.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.81ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19118.12ms IncrementalHoareTripleChecker+Time [2021-11-05 12:33:04,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1006 Valid, 1825 Invalid, 790 Unknown, 0 Unchecked, 9.81ms Time], IncrementalHoareTripleChecker [56 Valid, 726 Invalid, 8 Unknown, 0 Unchecked, 19118.12ms Time] [2021-11-05 12:33:04,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-11-05 12:33:04,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 472. [2021-11-05 12:33:04,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 462 states have (on average 1.1233766233766234) internal successors, (519), 471 states have internal predecessors, (519), 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 12:33:04,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 519 transitions. [2021-11-05 12:33:04,326 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 519 transitions. Word has length 85 [2021-11-05 12:33:04,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:33:04,327 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 519 transitions. [2021-11-05 12:33:04,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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 12:33:04,327 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 519 transitions. [2021-11-05 12:33:04,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:33:04,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:33:04,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:33:04,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-05 12:33:04,329 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:33:04,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:33:04,329 INFO L85 PathProgramCache]: Analyzing trace with hash 353688179, now seen corresponding path program 1 times [2021-11-05 12:33:04,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:33:04,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422281097] [2021-11-05 12:33:04,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:33:04,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:33:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:33:05,854 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 12:33:05,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:33:05,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422281097] [2021-11-05 12:33:05,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422281097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:33:05,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:33:05,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:33:05,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396766777] [2021-11-05 12:33:05,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:33:05,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:33:05,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:33:05,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:33:05,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:33:05,856 INFO L87 Difference]: Start difference. First operand 472 states and 519 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 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 12:33:07,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:10,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:12,191 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:14,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:16,379 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:18,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:20,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:33:20,885 INFO L93 Difference]: Finished difference Result 768 states and 844 transitions. [2021-11-05 12:33:20,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:33:20,886 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 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 85 [2021-11-05 12:33:20,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:33:20,887 INFO L225 Difference]: With dead ends: 768 [2021-11-05 12:33:20,888 INFO L226 Difference]: Without dead ends: 621 [2021-11-05 12:33:20,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1103.89ms TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-11-05 12:33:20,889 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 657 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 40 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13612.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.34ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14429.61ms IncrementalHoareTripleChecker+Time [2021-11-05 12:33:20,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [657 Valid, 1501 Invalid, 586 Unknown, 0 Unchecked, 7.34ms Time], IncrementalHoareTripleChecker [40 Valid, 540 Invalid, 6 Unknown, 0 Unchecked, 14429.61ms Time] [2021-11-05 12:33:20,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-11-05 12:33:20,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 500. [2021-11-05 12:33:20,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 490 states have (on average 1.1183673469387756) internal successors, (548), 499 states have internal predecessors, (548), 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 12:33:20,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 548 transitions. [2021-11-05 12:33:20,916 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 548 transitions. Word has length 85 [2021-11-05 12:33:20,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:33:20,916 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 548 transitions. [2021-11-05 12:33:20,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 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 12:33:20,917 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 548 transitions. [2021-11-05 12:33:20,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:33:20,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:33:20,918 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:33:20,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-05 12:33:20,918 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:33:20,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:33:20,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1234659723, now seen corresponding path program 1 times [2021-11-05 12:33:20,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:33:20,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73501551] [2021-11-05 12:33:20,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:33:20,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:33:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:33:22,734 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 12:33:22,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:33:22,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73501551] [2021-11-05 12:33:22,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73501551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:33:22,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:33:22,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-05 12:33:22,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358996236] [2021-11-05 12:33:22,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:33:22,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-05 12:33:22,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:33:22,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-05 12:33:22,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:33:22,736 INFO L87 Difference]: Start difference. First operand 500 states and 548 transitions. Second operand has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 19 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 12:33:24,780 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:26,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:29,075 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:31,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:33,328 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:35,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:37,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:39,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:41,814 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:43,948 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:46,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:48,241 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:53,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:33:53,768 INFO L93 Difference]: Finished difference Result 696 states and 759 transitions. [2021-11-05 12:33:53,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-05 12:33:53,768 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 19 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 85 [2021-11-05 12:33:53,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:33:53,770 INFO L225 Difference]: With dead ends: 696 [2021-11-05 12:33:53,770 INFO L226 Difference]: Without dead ends: 639 [2021-11-05 12:33:53,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 2770.85ms TimeCoverageRelationStatistics Valid=311, Invalid=1021, Unknown=0, NotChecked=0, Total=1332 [2021-11-05 12:33:53,771 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 887 mSDsluCounter, 2358 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 61 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27332.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.80ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29060.41ms IncrementalHoareTripleChecker+Time [2021-11-05 12:33:53,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [887 Valid, 2620 Invalid, 1172 Unknown, 0 Unchecked, 14.80ms Time], IncrementalHoareTripleChecker [61 Valid, 1099 Invalid, 12 Unknown, 0 Unchecked, 29060.41ms Time] [2021-11-05 12:33:53,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-11-05 12:33:53,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 490. [2021-11-05 12:33:53,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 480 states have (on average 1.1208333333333333) internal successors, (538), 489 states have internal predecessors, (538), 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 12:33:53,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 538 transitions. [2021-11-05 12:33:53,790 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 538 transitions. Word has length 85 [2021-11-05 12:33:53,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:33:53,791 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 538 transitions. [2021-11-05 12:33:53,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 19 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 12:33:53,791 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 538 transitions. [2021-11-05 12:33:53,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:33:53,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:33:53,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:33:53,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-05 12:33:53,792 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:33:53,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:33:53,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1192781619, now seen corresponding path program 1 times [2021-11-05 12:33:53,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:33:53,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033069870] [2021-11-05 12:33:53,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:33:53,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:33:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:33:56,925 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 12:33:56,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:33:56,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033069870] [2021-11-05 12:33:56,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033069870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:33:56,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:33:56,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:33:56,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354777177] [2021-11-05 12:33:56,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:33:56,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:33:56,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:33:56,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:33:56,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:33:56,927 INFO L87 Difference]: Start difference. First operand 490 states and 538 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 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 12:33:58,972 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:01,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:03,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:05,332 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:07,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:09,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:11,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:17,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:34:17,763 INFO L93 Difference]: Finished difference Result 785 states and 859 transitions. [2021-11-05 12:34:17,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-05 12:34:17,764 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 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 85 [2021-11-05 12:34:17,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:34:17,765 INFO L225 Difference]: With dead ends: 785 [2021-11-05 12:34:17,765 INFO L226 Difference]: Without dead ends: 579 [2021-11-05 12:34:17,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 4097.06ms TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2021-11-05 12:34:17,766 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 569 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 48 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16453.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.31ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17451.84ms IncrementalHoareTripleChecker+Time [2021-11-05 12:34:17,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 1407 Invalid, 895 Unknown, 0 Unchecked, 10.31ms Time], IncrementalHoareTripleChecker [48 Valid, 840 Invalid, 7 Unknown, 0 Unchecked, 17451.84ms Time] [2021-11-05 12:34:17,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-11-05 12:34:17,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 441. [2021-11-05 12:34:17,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 431 states have (on average 1.1206496519721578) internal successors, (483), 440 states have internal predecessors, (483), 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 12:34:17,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 483 transitions. [2021-11-05 12:34:17,784 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 483 transitions. Word has length 85 [2021-11-05 12:34:17,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:34:17,785 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 483 transitions. [2021-11-05 12:34:17,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 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 12:34:17,785 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 483 transitions. [2021-11-05 12:34:17,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-05 12:34:17,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:34:17,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:34:17,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-05 12:34:17,786 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:34:17,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:34:17,787 INFO L85 PathProgramCache]: Analyzing trace with hash -778964213, now seen corresponding path program 1 times [2021-11-05 12:34:17,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:34:17,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460295400] [2021-11-05 12:34:17,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:34:17,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:34:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:34:18,228 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 12:34:18,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:34:18,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460295400] [2021-11-05 12:34:18,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460295400] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:34:18,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:34:18,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:34:18,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780381005] [2021-11-05 12:34:18,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:34:18,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:34:18,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:34:18,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:34:18,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:34:18,230 INFO L87 Difference]: Start difference. First operand 441 states and 483 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 12:34:18,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:34:18,354 INFO L93 Difference]: Finished difference Result 618 states and 681 transitions. [2021-11-05 12:34:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:34:18,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 86 [2021-11-05 12:34:18,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:34:18,356 INFO L225 Difference]: With dead ends: 618 [2021-11-05 12:34:18,356 INFO L226 Difference]: Without dead ends: 479 [2021-11-05 12:34:18,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 106.98ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:34:18,359 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 232 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.58ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.88ms IncrementalHoareTripleChecker+Time [2021-11-05 12:34:18,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 554 Invalid, 22 Unknown, 0 Unchecked, 0.58ms Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 57.88ms Time] [2021-11-05 12:34:18,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-11-05 12:34:18,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 412. [2021-11-05 12:34:18,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 402 states have (on average 1.1169154228855722) internal successors, (449), 411 states have internal predecessors, (449), 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 12:34:18,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 449 transitions. [2021-11-05 12:34:18,379 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 449 transitions. Word has length 86 [2021-11-05 12:34:18,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:34:18,379 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 449 transitions. [2021-11-05 12:34:18,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 12:34:18,380 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 449 transitions. [2021-11-05 12:34:18,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-05 12:34:18,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:34:18,381 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, 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 12:34:18,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-05 12:34:18,381 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:34:18,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:34:18,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2119490476, now seen corresponding path program 1 times [2021-11-05 12:34:18,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:34:18,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432601899] [2021-11-05 12:34:18,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:34:18,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:34:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:34:19,218 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 12:34:19,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:34:19,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432601899] [2021-11-05 12:34:19,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432601899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:34:19,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:34:19,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:34:19,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347830639] [2021-11-05 12:34:19,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:34:19,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:34:19,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:34:19,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:34:19,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:34:19,219 INFO L87 Difference]: Start difference. First operand 412 states and 449 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 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 12:34:21,279 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:23,422 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:25,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:27,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:29,735 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:32,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:34:32,136 INFO L93 Difference]: Finished difference Result 661 states and 717 transitions. [2021-11-05 12:34:32,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 12:34:32,136 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 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 87 [2021-11-05 12:34:32,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:34:32,138 INFO L225 Difference]: With dead ends: 661 [2021-11-05 12:34:32,138 INFO L226 Difference]: Without dead ends: 587 [2021-11-05 12:34:32,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 897.14ms TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-11-05 12:34:32,139 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 486 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 38 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11564.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.49ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12267.60ms IncrementalHoareTripleChecker+Time [2021-11-05 12:34:32,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1088 Invalid, 601 Unknown, 0 Unchecked, 5.49ms Time], IncrementalHoareTripleChecker [38 Valid, 558 Invalid, 5 Unknown, 0 Unchecked, 12267.60ms Time] [2021-11-05 12:34:32,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-11-05 12:34:32,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 434. [2021-11-05 12:34:32,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 424 states have (on average 1.1132075471698113) internal successors, (472), 433 states have internal predecessors, (472), 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 12:34:32,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 472 transitions. [2021-11-05 12:34:32,157 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 472 transitions. Word has length 87 [2021-11-05 12:34:32,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:34:32,157 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 472 transitions. [2021-11-05 12:34:32,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 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 12:34:32,157 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 472 transitions. [2021-11-05 12:34:32,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-05 12:34:32,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:34:32,158 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, 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 12:34:32,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-05 12:34:32,158 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:34:32,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:34:32,158 INFO L85 PathProgramCache]: Analyzing trace with hash -789273426, now seen corresponding path program 1 times [2021-11-05 12:34:32,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:34:32,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159013786] [2021-11-05 12:34:32,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:34:32,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:34:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:34:33,879 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 12:34:33,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:34:33,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159013786] [2021-11-05 12:34:33,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159013786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:34:33,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:34:33,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-05 12:34:33,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365046154] [2021-11-05 12:34:33,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:34:33,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-05 12:34:33,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:34:33,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-05 12:34:33,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-05 12:34:33,881 INFO L87 Difference]: Start difference. First operand 434 states and 472 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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 12:34:35,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:38,072 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:40,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:42,323 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:44,446 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:46,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:48,678 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:50,790 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:54,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:34:54,357 INFO L93 Difference]: Finished difference Result 592 states and 645 transitions. [2021-11-05 12:34:54,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:34:54,358 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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 87 [2021-11-05 12:34:54,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:34:54,360 INFO L225 Difference]: With dead ends: 592 [2021-11-05 12:34:54,360 INFO L226 Difference]: Without dead ends: 440 [2021-11-05 12:34:54,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1541.04ms TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2021-11-05 12:34:54,361 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 760 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 51 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18597.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.73ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19722.74ms IncrementalHoareTripleChecker+Time [2021-11-05 12:34:54,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 1708 Invalid, 892 Unknown, 0 Unchecked, 11.73ms Time], IncrementalHoareTripleChecker [51 Valid, 833 Invalid, 8 Unknown, 0 Unchecked, 19722.74ms Time] [2021-11-05 12:34:54,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-05 12:34:54,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 408. [2021-11-05 12:34:54,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 398 states have (on average 1.1105527638190955) internal successors, (442), 407 states have internal predecessors, (442), 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 12:34:54,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 442 transitions. [2021-11-05 12:34:54,385 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 442 transitions. Word has length 87 [2021-11-05 12:34:54,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:34:54,385 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 442 transitions. [2021-11-05 12:34:54,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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 12:34:54,385 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 442 transitions. [2021-11-05 12:34:54,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-05 12:34:54,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:34:54,386 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, 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 12:34:54,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-05 12:34:54,386 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 12:34:54,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:34:54,387 INFO L85 PathProgramCache]: Analyzing trace with hash -535575669, now seen corresponding path program 1 times [2021-11-05 12:34:54,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:34:54,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309851954] [2021-11-05 12:34:54,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:34:54,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:34:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:34:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:34:55,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:34:55,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309851954] [2021-11-05 12:34:55,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309851954] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 12:34:55,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307674631] [2021-11-05 12:34:55,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:34:55,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:34:55,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:34:55,072 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 12:34:55,075 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 12:34:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:34:56,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 3061 conjuncts, 132 conjunts are in the unsatisfiable core [2021-11-05 12:34:56,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:34:56,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-05 12:34:56,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-05 12:34:58,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:34:58,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 17 [2021-11-05 12:34:58,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:34:58,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-05 12:34:58,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 12:34:58,225 INFO L354 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2021-11-05 12:34:58,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 98 [2021-11-05 12:34:58,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:34:58,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:34:58,511 INFO L354 Elim1Store]: treesize reduction 140, result has 24.3 percent of original size [2021-11-05 12:34:58,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 98 treesize of output 148 [2021-11-05 12:34:59,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:34:59,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:34:59,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:35:00,034 INFO L354 Elim1Store]: treesize reduction 71, result has 14.5 percent of original size [2021-11-05 12:35:00,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 82 treesize of output 66 [2021-11-05 12:35:02,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:35:02,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:35:02,515 INFO L354 Elim1Store]: treesize reduction 79, result has 15.1 percent of original size [2021-11-05 12:35:02,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 114 treesize of output 90 [2021-11-05 12:35:04,703 INFO L354 Elim1Store]: treesize reduction 84, result has 66.7 percent of original size [2021-11-05 12:35:04,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 107 treesize of output 236 [2021-11-05 12:35:04,800 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-05 12:35:04,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 236 treesize of output 232 Killed by 15