./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_linked_list_end_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 a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 09:42:55,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 09:42:55,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 09:42:55,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 09:42:55,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 09:42:55,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 09:42:55,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 09:42:55,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 09:42:55,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 09:42:55,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 09:42:55,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 09:42:55,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 09:42:55,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 09:42:55,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 09:42:55,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 09:42:55,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 09:42:55,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 09:42:55,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 09:42:55,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 09:42:55,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 09:42:55,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 09:42:55,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 09:42:55,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 09:42:55,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 09:42:55,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 09:42:55,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 09:42:55,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 09:42:55,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 09:42:55,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 09:42:55,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 09:42:55,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 09:42:55,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 09:42:55,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 09:42:55,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 09:42:55,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 09:42:55,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 09:42:55,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 09:42:55,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 09:42:55,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 09:42:55,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 09:42:55,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 09:42:55,789 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 09:42:55,813 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 09:42:55,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 09:42:55,814 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 09:42:55,814 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 09:42:55,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 09:42:55,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 09:42:55,816 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 09:42:55,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 09:42:55,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 09:42:55,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 09:42:55,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 09:42:55,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 09:42:55,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 09:42:55,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 09:42:55,817 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 09:42:55,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 09:42:55,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 09:42:55,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 09:42:55,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 09:42:55,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 09:42:55,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 09:42:55,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 09:42:55,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 09:42:55,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 09:42:55,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 09:42:55,819 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 09:42:55,819 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 09:42:55,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 09:42:55,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 09:42:55,820 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 [2021-11-07 09:42:56,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 09:42:56,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 09:42:56,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 09:42:56,089 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 09:42:56,089 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 09:42:56,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2021-11-07 09:42:56,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cf917006/25db3f2ac62347e493f6bbb8ca7027c1/FLAGa9d58050f [2021-11-07 09:42:56,644 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 09:42:56,645 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2021-11-07 09:42:56,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cf917006/25db3f2ac62347e493f6bbb8ca7027c1/FLAGa9d58050f [2021-11-07 09:42:56,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cf917006/25db3f2ac62347e493f6bbb8ca7027c1 [2021-11-07 09:42:56,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 09:42:56,871 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 09:42:56,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 09:42:56,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 09:42:56,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 09:42:56,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:42:56" (1/1) ... [2021-11-07 09:42:56,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d9273c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:56, skipping insertion in model container [2021-11-07 09:42:56,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:42:56" (1/1) ... [2021-11-07 09:42:56,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 09:42:56,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 09:42:57,141 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4493,4506] [2021-11-07 09:42:57,146 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4553,4566] [2021-11-07 09:42:57,165 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 09:42:57,172 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 09:42:57,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:57,571 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:57,572 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:57,572 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:57,573 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:57,580 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:57,582 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:57,585 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:57,586 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:57,587 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:57,588 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:57,589 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:57,590 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:57,768 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 09:42:57,776 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 09:42:57,778 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 09:42:57,780 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 09:42:57,781 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 09:42:57,783 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 09:42:57,783 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 09:42:57,784 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 09:42:57,785 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 09:42:57,796 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 09:42:57,913 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 09:42:57,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 09:42:57,964 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 09:42:57,982 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4493,4506] [2021-11-07 09:42:57,982 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4553,4566] [2021-11-07 09:42:57,984 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 09:42:57,985 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 09:42:58,056 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:58,056 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:58,057 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:58,060 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:58,061 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:58,086 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:58,086 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:58,087 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:58,087 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:58,087 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:58,088 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:58,088 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:58,088 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:42:58,105 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 09:42:58,105 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 09:42:58,106 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 09:42:58,106 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 09:42:58,107 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 09:42:58,107 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 09:42:58,107 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 09:42:58,108 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 09:42:58,108 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 09:42:58,108 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 09:42:58,120 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 09:42:58,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 09:42:58,226 INFO L208 MainTranslator]: Completed translation [2021-11-07 09:42:58,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:58 WrapperNode [2021-11-07 09:42:58,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 09:42:58,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 09:42:58,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 09:42:58,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 09:42:58,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:58" (1/1) ... [2021-11-07 09:42:58,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:58" (1/1) ... [2021-11-07 09:42:58,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 09:42:58,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 09:42:58,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 09:42:58,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 09:42:58,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:58" (1/1) ... [2021-11-07 09:42:58,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:58" (1/1) ... [2021-11-07 09:42:58,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:58" (1/1) ... [2021-11-07 09:42:58,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:58" (1/1) ... [2021-11-07 09:42:58,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:58" (1/1) ... [2021-11-07 09:42:58,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:58" (1/1) ... [2021-11-07 09:42:58,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:58" (1/1) ... [2021-11-07 09:42:58,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 09:42:58,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 09:42:58,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 09:42:58,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 09:42:58,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:58" (1/1) ... [2021-11-07 09:42:58,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 09:42:58,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:42:58,456 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) [2021-11-07 09:42:58,479 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 [2021-11-07 09:42:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 09:42:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 09:42:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 09:42:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 09:42:58,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 09:42:58,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 09:42:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 09:42:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 09:42:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 09:42:58,979 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 09:42:58,979 INFO L299 CfgBuilder]: Removed 55 assume(true) statements. [2021-11-07 09:42:58,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:42:58 BoogieIcfgContainer [2021-11-07 09:42:58,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 09:42:58,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 09:42:58,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 09:42:58,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 09:42:58,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:42:56" (1/3) ... [2021-11-07 09:42:58,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79693306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:42:58, skipping insertion in model container [2021-11-07 09:42:58,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:42:58" (2/3) ... [2021-11-07 09:42:58,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79693306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:42:58, skipping insertion in model container [2021-11-07 09:42:58,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:42:58" (3/3) ... [2021-11-07 09:42:58,991 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_end_harness.i [2021-11-07 09:42:58,994 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 09:42:58,994 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 09:42:59,022 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 09:42:59,026 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 [2021-11-07 09:42:59,026 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 09:42:59,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 113 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:42:59,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 09:42:59,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:42:59,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:42:59,041 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:42:59,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:42:59,045 INFO L85 PathProgramCache]: Analyzing trace with hash -122732205, now seen corresponding path program 1 times [2021-11-07 09:42:59,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:42:59,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486383056] [2021-11-07 09:42:59,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:42:59,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:42:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:42:59,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:42:59,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:42:59,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486383056] [2021-11-07 09:42:59,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486383056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:42:59,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:42:59,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 09:42:59,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864086030] [2021-11-07 09:42:59,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:42:59,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 09:42:59,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:42:59,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 09:42:59,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 09:42:59,298 INFO L87 Difference]: Start difference. First operand has 114 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 113 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:42:59,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:42:59,317 INFO L93 Difference]: Finished difference Result 224 states and 335 transitions. [2021-11-07 09:42:59,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 09:42:59,318 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 09:42:59,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:42:59,324 INFO L225 Difference]: With dead ends: 224 [2021-11-07 09:42:59,324 INFO L226 Difference]: Without dead ends: 109 [2021-11-07 09:42:59,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.05ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 09:42:59,329 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 09:42:59,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 1.31ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 09:42:59,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-07 09:42:59,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-07 09:42:59,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.457142857142857) internal successors, (153), 108 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:42:59,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 153 transitions. [2021-11-07 09:42:59,356 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 153 transitions. Word has length 41 [2021-11-07 09:42:59,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:42:59,357 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 153 transitions. [2021-11-07 09:42:59,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:42:59,357 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 153 transitions. [2021-11-07 09:42:59,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 09:42:59,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:42:59,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:42:59,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 09:42:59,359 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:42:59,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:42:59,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1738897517, now seen corresponding path program 1 times [2021-11-07 09:42:59,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:42:59,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69707187] [2021-11-07 09:42:59,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:42:59,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:42:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:42:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:42:59,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:42:59,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69707187] [2021-11-07 09:42:59,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69707187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:42:59,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:42:59,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:42:59,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470844483] [2021-11-07 09:42:59,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:42:59,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:42:59,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:42:59,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:42:59,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:42:59,462 INFO L87 Difference]: Start difference. First operand 109 states and 153 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:42:59,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:42:59,589 INFO L93 Difference]: Finished difference Result 254 states and 367 transitions. [2021-11-07 09:42:59,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:42:59,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 09:42:59,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:42:59,591 INFO L225 Difference]: With dead ends: 254 [2021-11-07 09:42:59,592 INFO L226 Difference]: Without dead ends: 157 [2021-11-07 09:42:59,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.63ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:42:59,593 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 63 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.12ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 99.24ms IncrementalHoareTripleChecker+Time [2021-11-07 09:42:59,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 466 Invalid, 100 Unknown, 0 Unchecked, 4.12ms Time], IncrementalHoareTripleChecker [13 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 99.24ms Time] [2021-11-07 09:42:59,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-07 09:42:59,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 117. [2021-11-07 09:42:59,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.424778761061947) internal successors, (161), 116 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:42:59,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 161 transitions. [2021-11-07 09:42:59,603 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 161 transitions. Word has length 41 [2021-11-07 09:42:59,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:42:59,603 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 161 transitions. [2021-11-07 09:42:59,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:42:59,604 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 161 transitions. [2021-11-07 09:42:59,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 09:42:59,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:42:59,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:42:59,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 09:42:59,605 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:42:59,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:42:59,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1037297643, now seen corresponding path program 1 times [2021-11-07 09:42:59,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:42:59,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666010635] [2021-11-07 09:42:59,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:42:59,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:42:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:42:59,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:42:59,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:42:59,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666010635] [2021-11-07 09:42:59,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666010635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:42:59,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:42:59,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:42:59,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209256938] [2021-11-07 09:42:59,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:42:59,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:42:59,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:42:59,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:42:59,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:42:59,664 INFO L87 Difference]: Start difference. First operand 117 states and 161 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:42:59,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:42:59,780 INFO L93 Difference]: Finished difference Result 250 states and 354 transitions. [2021-11-07 09:42:59,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:42:59,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 09:42:59,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:42:59,781 INFO L225 Difference]: With dead ends: 250 [2021-11-07 09:42:59,781 INFO L226 Difference]: Without dead ends: 149 [2021-11-07 09:42:59,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.46ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:42:59,783 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 36 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.48ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.76ms IncrementalHoareTripleChecker+Time [2021-11-07 09:42:59,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 432 Invalid, 104 Unknown, 0 Unchecked, 2.48ms Time], IncrementalHoareTripleChecker [13 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 78.76ms Time] [2021-11-07 09:42:59,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-07 09:42:59,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 125. [2021-11-07 09:42:59,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 121 states have (on average 1.396694214876033) internal successors, (169), 124 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:42:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 169 transitions. [2021-11-07 09:42:59,790 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 169 transitions. Word has length 41 [2021-11-07 09:42:59,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:42:59,790 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 169 transitions. [2021-11-07 09:42:59,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:42:59,791 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 169 transitions. [2021-11-07 09:42:59,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 09:42:59,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:42:59,792 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] [2021-11-07 09:42:59,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 09:42:59,792 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:42:59,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:42:59,797 INFO L85 PathProgramCache]: Analyzing trace with hash 348905751, now seen corresponding path program 1 times [2021-11-07 09:42:59,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:42:59,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523973584] [2021-11-07 09:42:59,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:42:59,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:42:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:42:59,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:42:59,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:42:59,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523973584] [2021-11-07 09:42:59,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523973584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:42:59,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:42:59,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:42:59,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008171518] [2021-11-07 09:42:59,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:42:59,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:42:59,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:42:59,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:42:59,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:42:59,898 INFO L87 Difference]: Start difference. First operand 125 states and 169 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:42:59,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:42:59,926 INFO L93 Difference]: Finished difference Result 230 states and 314 transitions. [2021-11-07 09:42:59,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:42:59,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 09:42:59,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:42:59,927 INFO L225 Difference]: With dead ends: 230 [2021-11-07 09:42:59,927 INFO L226 Difference]: Without dead ends: 119 [2021-11-07 09:42:59,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.25ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:42:59,929 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 140 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.86ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.89ms IncrementalHoareTripleChecker+Time [2021-11-07 09:42:59,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 270 Invalid, 34 Unknown, 0 Unchecked, 0.86ms Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 21.89ms Time] [2021-11-07 09:42:59,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-07 09:42:59,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-11-07 09:42:59,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.391304347826087) internal successors, (160), 118 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:42:59,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 160 transitions. [2021-11-07 09:42:59,936 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 160 transitions. Word has length 41 [2021-11-07 09:42:59,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:42:59,936 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 160 transitions. [2021-11-07 09:42:59,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:42:59,936 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 160 transitions. [2021-11-07 09:42:59,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 09:42:59,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:42:59,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:42:59,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 09:42:59,938 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:42:59,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:42:59,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1666510959, now seen corresponding path program 1 times [2021-11-07 09:42:59,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:42:59,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203735579] [2021-11-07 09:42:59,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:42:59,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:42:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:42:59,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:42:59,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:42:59,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203735579] [2021-11-07 09:42:59,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203735579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:42:59,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:42:59,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:42:59,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64275146] [2021-11-07 09:42:59,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:43:00,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:43:00,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:43:00,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:43:00,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:43:00,000 INFO L87 Difference]: Start difference. First operand 119 states and 160 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:00,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:43:00,029 INFO L93 Difference]: Finished difference Result 228 states and 298 transitions. [2021-11-07 09:43:00,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:43:00,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 09:43:00,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:43:00,031 INFO L225 Difference]: With dead ends: 228 [2021-11-07 09:43:00,031 INFO L226 Difference]: Without dead ends: 137 [2021-11-07 09:43:00,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.45ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:43:00,032 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 18 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.55ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.71ms IncrementalHoareTripleChecker+Time [2021-11-07 09:43:00,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 422 Invalid, 29 Unknown, 0 Unchecked, 0.55ms Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 19.71ms Time] [2021-11-07 09:43:00,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-07 09:43:00,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 119. [2021-11-07 09:43:00,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.373913043478261) internal successors, (158), 118 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:00,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 158 transitions. [2021-11-07 09:43:00,038 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 158 transitions. Word has length 41 [2021-11-07 09:43:00,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:43:00,039 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 158 transitions. [2021-11-07 09:43:00,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:00,042 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 158 transitions. [2021-11-07 09:43:00,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 09:43:00,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:43:00,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:43:00,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 09:43:00,045 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:43:00,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:43:00,046 INFO L85 PathProgramCache]: Analyzing trace with hash -423042159, now seen corresponding path program 1 times [2021-11-07 09:43:00,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:43:00,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796677612] [2021-11-07 09:43:00,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:43:00,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:43:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:43:00,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:43:00,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:43:00,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796677612] [2021-11-07 09:43:00,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796677612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:43:00,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:43:00,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 09:43:00,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961764061] [2021-11-07 09:43:00,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:43:00,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:43:00,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:43:00,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:43:00,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:43:00,144 INFO L87 Difference]: Start difference. First operand 119 states and 158 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:00,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:43:00,265 INFO L93 Difference]: Finished difference Result 242 states and 315 transitions. [2021-11-07 09:43:00,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:43:00,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 09:43:00,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:43:00,267 INFO L225 Difference]: With dead ends: 242 [2021-11-07 09:43:00,267 INFO L226 Difference]: Without dead ends: 152 [2021-11-07 09:43:00,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 46.58ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:43:00,271 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 458 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.28ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.88ms IncrementalHoareTripleChecker+Time [2021-11-07 09:43:00,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 223 Invalid, 94 Unknown, 0 Unchecked, 1.28ms Time], IncrementalHoareTripleChecker [30 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 67.88ms Time] [2021-11-07 09:43:00,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-07 09:43:00,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 119. [2021-11-07 09:43:00,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.3478260869565217) internal successors, (155), 118 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:00,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 155 transitions. [2021-11-07 09:43:00,292 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 155 transitions. Word has length 45 [2021-11-07 09:43:00,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:43:00,292 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 155 transitions. [2021-11-07 09:43:00,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:00,292 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 155 transitions. [2021-11-07 09:43:00,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 09:43:00,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:43:00,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:43:00,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 09:43:00,294 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:43:00,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:43:00,294 INFO L85 PathProgramCache]: Analyzing trace with hash -2072078671, now seen corresponding path program 1 times [2021-11-07 09:43:00,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:43:00,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756696543] [2021-11-07 09:43:00,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:43:00,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:43:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:43:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:43:00,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:43:00,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756696543] [2021-11-07 09:43:00,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756696543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:43:00,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:43:00,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 09:43:00,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611969428] [2021-11-07 09:43:00,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:43:00,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:43:00,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:43:00,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:43:00,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:43:00,403 INFO L87 Difference]: Start difference. First operand 119 states and 155 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:00,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:43:00,592 INFO L93 Difference]: Finished difference Result 334 states and 430 transitions. [2021-11-07 09:43:00,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 09:43:00,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 09:43:00,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:43:00,594 INFO L225 Difference]: With dead ends: 334 [2021-11-07 09:43:00,594 INFO L226 Difference]: Without dead ends: 243 [2021-11-07 09:43:00,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 72.02ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:43:00,599 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 819 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.41ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.31ms IncrementalHoareTripleChecker+Time [2021-11-07 09:43:00,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 346 Invalid, 180 Unknown, 0 Unchecked, 2.41ms Time], IncrementalHoareTripleChecker [63 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 110.31ms Time] [2021-11-07 09:43:00,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-07 09:43:00,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 122. [2021-11-07 09:43:00,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 118 states have (on average 1.3389830508474576) internal successors, (158), 121 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:00,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 158 transitions. [2021-11-07 09:43:00,617 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 158 transitions. Word has length 49 [2021-11-07 09:43:00,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:43:00,618 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 158 transitions. [2021-11-07 09:43:00,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:00,622 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 158 transitions. [2021-11-07 09:43:00,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 09:43:00,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:43:00,623 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] [2021-11-07 09:43:00,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 09:43:00,623 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:43:00,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:43:00,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1006498608, now seen corresponding path program 1 times [2021-11-07 09:43:00,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:43:00,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140448815] [2021-11-07 09:43:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:43:00,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:43:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:43:00,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:43:00,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:43:00,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140448815] [2021-11-07 09:43:00,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140448815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:43:00,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:43:00,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 09:43:00,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210091037] [2021-11-07 09:43:00,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:43:00,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:43:00,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:43:00,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:43:00,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:43:00,699 INFO L87 Difference]: Start difference. First operand 122 states and 158 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:00,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:43:00,828 INFO L93 Difference]: Finished difference Result 327 states and 416 transitions. [2021-11-07 09:43:00,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:43:00,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 09:43:00,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:43:00,830 INFO L225 Difference]: With dead ends: 327 [2021-11-07 09:43:00,830 INFO L226 Difference]: Without dead ends: 234 [2021-11-07 09:43:00,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 46.80ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:43:00,831 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 606 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.95ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.65ms IncrementalHoareTripleChecker+Time [2021-11-07 09:43:00,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 308 Invalid, 134 Unknown, 0 Unchecked, 1.95ms Time], IncrementalHoareTripleChecker [39 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 76.65ms Time] [2021-11-07 09:43:00,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-07 09:43:00,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 125. [2021-11-07 09:43:00,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 121 states have (on average 1.3305785123966942) internal successors, (161), 124 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:00,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 161 transitions. [2021-11-07 09:43:00,836 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 161 transitions. Word has length 51 [2021-11-07 09:43:00,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:43:00,836 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 161 transitions. [2021-11-07 09:43:00,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:00,836 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 161 transitions. [2021-11-07 09:43:00,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 09:43:00,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:43:00,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:43:00,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 09:43:00,840 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:43:00,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:43:00,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1179077135, now seen corresponding path program 1 times [2021-11-07 09:43:00,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:43:00,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953544878] [2021-11-07 09:43:00,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:43:00,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:43:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:43:00,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:43:00,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:43:00,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953544878] [2021-11-07 09:43:00,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953544878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:43:00,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:43:00,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:43:00,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625636194] [2021-11-07 09:43:00,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:43:00,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:43:00,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:43:00,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:43:00,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:43:00,928 INFO L87 Difference]: Start difference. First operand 125 states and 161 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:00,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:43:00,965 INFO L93 Difference]: Finished difference Result 244 states and 316 transitions. [2021-11-07 09:43:00,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:43:00,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-07 09:43:00,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:43:00,966 INFO L225 Difference]: With dead ends: 244 [2021-11-07 09:43:00,967 INFO L226 Difference]: Without dead ends: 141 [2021-11-07 09:43:00,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.61ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:43:00,969 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 9 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.53ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.42ms IncrementalHoareTripleChecker+Time [2021-11-07 09:43:00,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 392 Invalid, 72 Unknown, 0 Unchecked, 0.53ms Time], IncrementalHoareTripleChecker [13 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 29.42ms Time] [2021-11-07 09:43:00,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-07 09:43:00,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 133. [2021-11-07 09:43:00,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 129 states have (on average 1.310077519379845) internal successors, (169), 132 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:00,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 169 transitions. [2021-11-07 09:43:00,973 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 169 transitions. Word has length 61 [2021-11-07 09:43:00,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:43:00,973 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 169 transitions. [2021-11-07 09:43:00,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:00,974 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 169 transitions. [2021-11-07 09:43:00,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 09:43:00,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:43:00,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:43:00,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 09:43:00,975 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:43:00,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:43:00,976 INFO L85 PathProgramCache]: Analyzing trace with hash -192730163, now seen corresponding path program 1 times [2021-11-07 09:43:00,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:43:00,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12603407] [2021-11-07 09:43:00,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:43:00,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:43:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:43:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:43:01,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:43:01,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12603407] [2021-11-07 09:43:01,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12603407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:43:01,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:43:01,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:43:01,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104486036] [2021-11-07 09:43:01,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:43:01,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:43:01,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:43:01,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:43:01,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:43:01,044 INFO L87 Difference]: Start difference. First operand 133 states and 169 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:01,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:43:01,220 INFO L93 Difference]: Finished difference Result 362 states and 457 transitions. [2021-11-07 09:43:01,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 09:43:01,221 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-07 09:43:01,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:43:01,222 INFO L225 Difference]: With dead ends: 362 [2021-11-07 09:43:01,222 INFO L226 Difference]: Without dead ends: 251 [2021-11-07 09:43:01,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 70.17ms TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-11-07 09:43:01,223 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 761 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.36ms IncrementalHoareTripleChecker+Time [2021-11-07 09:43:01,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 449 Invalid, 254 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [80 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 108.36ms Time] [2021-11-07 09:43:01,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-07 09:43:01,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 136. [2021-11-07 09:43:01,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 132 states have (on average 1.303030303030303) internal successors, (172), 135 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:01,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 172 transitions. [2021-11-07 09:43:01,228 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 172 transitions. Word has length 61 [2021-11-07 09:43:01,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:43:01,228 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 172 transitions. [2021-11-07 09:43:01,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:01,229 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 172 transitions. [2021-11-07 09:43:01,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 09:43:01,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:43:01,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:43:01,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 09:43:01,230 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:43:01,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:43:01,230 INFO L85 PathProgramCache]: Analyzing trace with hash 930930641, now seen corresponding path program 1 times [2021-11-07 09:43:01,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:43:01,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405652951] [2021-11-07 09:43:01,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:43:01,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:43:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:43:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:43:01,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:43:01,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405652951] [2021-11-07 09:43:01,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405652951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:43:01,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:43:01,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:43:01,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282071631] [2021-11-07 09:43:01,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:43:01,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:43:01,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:43:01,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:43:01,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:43:01,277 INFO L87 Difference]: Start difference. First operand 136 states and 172 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:01,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:43:01,318 INFO L93 Difference]: Finished difference Result 289 states and 354 transitions. [2021-11-07 09:43:01,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:43:01,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-07 09:43:01,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:43:01,320 INFO L225 Difference]: With dead ends: 289 [2021-11-07 09:43:01,320 INFO L226 Difference]: Without dead ends: 184 [2021-11-07 09:43:01,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.03ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:43:01,321 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 52 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.68ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.32ms IncrementalHoareTripleChecker+Time [2021-11-07 09:43:01,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 592 Invalid, 63 Unknown, 0 Unchecked, 0.68ms Time], IncrementalHoareTripleChecker [11 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 27.32ms Time] [2021-11-07 09:43:01,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-07 09:43:01,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 136. [2021-11-07 09:43:01,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 132 states have (on average 1.2878787878787878) internal successors, (170), 135 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:01,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 170 transitions. [2021-11-07 09:43:01,325 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 170 transitions. Word has length 61 [2021-11-07 09:43:01,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:43:01,325 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 170 transitions. [2021-11-07 09:43:01,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:01,326 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 170 transitions. [2021-11-07 09:43:01,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 09:43:01,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:43:01,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:43:01,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 09:43:01,327 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:43:01,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:43:01,327 INFO L85 PathProgramCache]: Analyzing trace with hash -961072015, now seen corresponding path program 1 times [2021-11-07 09:43:01,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:43:01,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137037626] [2021-11-07 09:43:01,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:43:01,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:43:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:43:01,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 09:43:01,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:43:01,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137037626] [2021-11-07 09:43:01,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137037626] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:43:01,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732483445] [2021-11-07 09:43:01,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:43:01,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:43:01,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:43:01,435 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) [2021-11-07 09:43:01,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 09:43:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:43:01,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-07 09:43:01,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:43:01,713 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 09:43:01,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 50 [2021-11-07 09:43:01,731 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-07 09:43:01,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 54 [2021-11-07 09:43:02,637 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-11-07 09:43:02,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 89 [2021-11-07 09:43:02,653 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 09:43:02,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 89 [2021-11-07 09:43:02,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 09:43:02,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 09:43:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 09:43:02,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732483445] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 09:43:02,944 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 09:43:02,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 16 [2021-11-07 09:43:02,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520358378] [2021-11-07 09:43:02,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 09:43:02,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 09:43:02,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:43:02,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 09:43:02,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-07 09:43:02,946 INFO L87 Difference]: Start difference. First operand 136 states and 170 transitions. Second operand has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:03,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:43:03,549 INFO L93 Difference]: Finished difference Result 599 states and 730 transitions. [2021-11-07 09:43:03,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 09:43:03,550 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 09:43:03,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:43:03,552 INFO L225 Difference]: With dead ends: 599 [2021-11-07 09:43:03,552 INFO L226 Difference]: Without dead ends: 496 [2021-11-07 09:43:03,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 505.46ms TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-11-07 09:43:03,553 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 814 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 225.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.60ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 738 IncrementalHoareTripleChecker+Unchecked, 275.43ms IncrementalHoareTripleChecker+Time [2021-11-07 09:43:03,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 1617 Invalid, 1236 Unknown, 0 Unchecked, 5.60ms Time], IncrementalHoareTripleChecker [62 Valid, 436 Invalid, 0 Unknown, 738 Unchecked, 275.43ms Time] [2021-11-07 09:43:03,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-11-07 09:43:03,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 190. [2021-11-07 09:43:03,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 186 states have (on average 1.2849462365591398) internal successors, (239), 189 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) [2021-11-07 09:43:03,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 239 transitions. [2021-11-07 09:43:03,562 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 239 transitions. Word has length 65 [2021-11-07 09:43:03,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:43:03,563 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 239 transitions. [2021-11-07 09:43:03,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:03,563 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 239 transitions. [2021-11-07 09:43:03,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 09:43:03,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:43:03,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:43:03,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 09:43:03,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-07 09:43:03,785 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:43:03,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:43:03,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1167005937, now seen corresponding path program 1 times [2021-11-07 09:43:03,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:43:03,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91694144] [2021-11-07 09:43:03,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:43:03,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:43:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:43:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:43:03,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:43:03,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91694144] [2021-11-07 09:43:03,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91694144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:43:03,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:43:03,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:43:03,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765061683] [2021-11-07 09:43:03,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:43:03,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:43:03,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:43:03,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:43:03,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:43:03,893 INFO L87 Difference]: Start difference. First operand 190 states and 239 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:04,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:43:04,163 INFO L93 Difference]: Finished difference Result 520 states and 662 transitions. [2021-11-07 09:43:04,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 09:43:04,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 09:43:04,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:43:04,166 INFO L225 Difference]: With dead ends: 520 [2021-11-07 09:43:04,166 INFO L226 Difference]: Without dead ends: 357 [2021-11-07 09:43:04,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 95.35ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:43:04,166 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 487 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.43ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 179.48ms IncrementalHoareTripleChecker+Time [2021-11-07 09:43:04,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 640 Invalid, 324 Unknown, 0 Unchecked, 2.43ms Time], IncrementalHoareTripleChecker [45 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 179.48ms Time] [2021-11-07 09:43:04,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-07 09:43:04,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 310. [2021-11-07 09:43:04,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 306 states have (on average 1.2908496732026145) internal successors, (395), 309 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:04,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 395 transitions. [2021-11-07 09:43:04,179 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 395 transitions. Word has length 65 [2021-11-07 09:43:04,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:43:04,180 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 395 transitions. [2021-11-07 09:43:04,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:04,180 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 395 transitions. [2021-11-07 09:43:04,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 09:43:04,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:43:04,181 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:43:04,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 09:43:04,181 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:43:04,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:43:04,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1164925684, now seen corresponding path program 1 times [2021-11-07 09:43:04,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:43:04,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125517722] [2021-11-07 09:43:04,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:43:04,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:43:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:43:04,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:43:04,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:43:04,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125517722] [2021-11-07 09:43:04,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125517722] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:43:04,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416659821] [2021-11-07 09:43:04,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:43:04,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:43:04,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:43:04,488 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:43:04,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 09:43:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:43:04,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-07 09:43:04,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:43:04,677 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-07 09:43:04,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-07 09:43:04,692 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-07 09:43:04,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 54 [2021-11-07 09:43:10,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:43:10,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:43:10,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416659821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:43:10,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 09:43:10,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2021-11-07 09:43:10,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216474227] [2021-11-07 09:43:10,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:43:10,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 09:43:10,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:43:10,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 09:43:10,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=403, Unknown=1, NotChecked=0, Total=462 [2021-11-07 09:43:10,152 INFO L87 Difference]: Start difference. First operand 310 states and 395 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:10,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:43:10,205 INFO L93 Difference]: Finished difference Result 566 states and 713 transitions. [2021-11-07 09:43:10,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 09:43:10,205 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 09:43:10,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:43:10,207 INFO L225 Difference]: With dead ends: 566 [2021-11-07 09:43:10,219 INFO L226 Difference]: Without dead ends: 498 [2021-11-07 09:43:10,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 3741.67ms TimeCoverageRelationStatistics Valid=63, Invalid=442, Unknown=1, NotChecked=0, Total=506 [2021-11-07 09:43:10,220 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 56 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 11.60ms IncrementalHoareTripleChecker+Time [2021-11-07 09:43:10,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 771 Invalid, 104 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 92 Unchecked, 11.60ms Time] [2021-11-07 09:43:10,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-11-07 09:43:10,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 472. [2021-11-07 09:43:10,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 468 states have (on average 1.267094017094017) internal successors, (593), 471 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:10,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 593 transitions. [2021-11-07 09:43:10,240 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 593 transitions. Word has length 67 [2021-11-07 09:43:10,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:43:10,241 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 593 transitions. [2021-11-07 09:43:10,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:10,241 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 593 transitions. [2021-11-07 09:43:10,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 09:43:10,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:43:10,244 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:43:10,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 09:43:10,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-07 09:43:10,460 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:43:10,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:43:10,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1166772726, now seen corresponding path program 1 times [2021-11-07 09:43:10,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:43:10,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606835980] [2021-11-07 09:43:10,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:43:10,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:43:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:43:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:43:10,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:43:10,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606835980] [2021-11-07 09:43:10,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606835980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:43:10,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:43:10,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 09:43:10,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328236831] [2021-11-07 09:43:10,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:43:10,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 09:43:10,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:43:10,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 09:43:10,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:43:10,726 INFO L87 Difference]: Start difference. First operand 472 states and 593 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:11,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:43:11,108 INFO L93 Difference]: Finished difference Result 689 states and 868 transitions. [2021-11-07 09:43:11,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 09:43:11,109 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 09:43:11,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:43:11,112 INFO L225 Difference]: With dead ends: 689 [2021-11-07 09:43:11,112 INFO L226 Difference]: Without dead ends: 534 [2021-11-07 09:43:11,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 175.06ms TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:43:11,115 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 965 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 194.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.78ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 228.66ms IncrementalHoareTripleChecker+Time [2021-11-07 09:43:11,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 870 Invalid, 406 Unknown, 0 Unchecked, 4.78ms Time], IncrementalHoareTripleChecker [70 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 228.66ms Time] [2021-11-07 09:43:11,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-11-07 09:43:11,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 484. [2021-11-07 09:43:11,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 480 states have (on average 1.2625) internal successors, (606), 483 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) [2021-11-07 09:43:11,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 606 transitions. [2021-11-07 09:43:11,144 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 606 transitions. Word has length 67 [2021-11-07 09:43:11,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:43:11,144 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 606 transitions. [2021-11-07 09:43:11,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:11,145 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 606 transitions. [2021-11-07 09:43:11,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 09:43:11,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:43:11,146 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:43:11,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 09:43:11,146 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:43:11,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:43:11,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1353187208, now seen corresponding path program 1 times [2021-11-07 09:43:11,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:43:11,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141674919] [2021-11-07 09:43:11,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:43:11,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:43:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:43:11,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:43:11,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:43:11,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141674919] [2021-11-07 09:43:11,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141674919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:43:11,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:43:11,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 09:43:11,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525516312] [2021-11-07 09:43:11,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:43:11,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 09:43:11,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:43:11,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 09:43:11,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:43:11,396 INFO L87 Difference]: Start difference. First operand 484 states and 606 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:11,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:43:11,835 INFO L93 Difference]: Finished difference Result 914 states and 1164 transitions. [2021-11-07 09:43:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 09:43:11,836 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 09:43:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:43:11,839 INFO L225 Difference]: With dead ends: 914 [2021-11-07 09:43:11,839 INFO L226 Difference]: Without dead ends: 782 [2021-11-07 09:43:11,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 188.46ms TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:43:11,840 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 456 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 214.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.98ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 260.57ms IncrementalHoareTripleChecker+Time [2021-11-07 09:43:11,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [456 Valid, 774 Invalid, 380 Unknown, 0 Unchecked, 3.98ms Time], IncrementalHoareTripleChecker [32 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 260.57ms Time] [2021-11-07 09:43:11,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-11-07 09:43:11,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 612. [2021-11-07 09:43:11,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 608 states have (on average 1.256578947368421) internal successors, (764), 611 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 764 transitions. [2021-11-07 09:43:11,884 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 764 transitions. Word has length 67 [2021-11-07 09:43:11,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:43:11,885 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 764 transitions. [2021-11-07 09:43:11,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:43:11,885 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 764 transitions. [2021-11-07 09:43:11,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 09:43:11,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:43:11,887 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:43:11,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 09:43:11,887 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:43:11,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:43:11,888 INFO L85 PathProgramCache]: Analyzing trace with hash -673128838, now seen corresponding path program 1 times [2021-11-07 09:43:11,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:43:11,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530733935] [2021-11-07 09:43:11,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:43:11,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:43:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:43:12,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:43:12,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:43:12,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530733935] [2021-11-07 09:43:12,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530733935] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:43:12,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783180868] [2021-11-07 09:43:12,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:43:12,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:43:12,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:43:12,080 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:43:12,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 09:43:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:43:12,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-07 09:43:12,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:43:12,274 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-07 09:43:12,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2021-11-07 09:43:31,707 WARN L227 SmtUtils]: Spent 9.39s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:43:43,301 WARN L227 SmtUtils]: Spent 9.55s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:43:55,169 WARN L227 SmtUtils]: Spent 9.74s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:44:05,234 WARN L227 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:44:14,204 WARN L227 SmtUtils]: Spent 8.80s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:44:22,280 WARN L227 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:44:30,438 WARN L227 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:44:40,623 WARN L227 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:44:48,938 WARN L227 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:44:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:44:48,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 09:44:49,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 381 treesize of output 365 [2021-11-07 09:44:49,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:44:49,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783180868] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 09:44:49,423 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 09:44:49,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 29 [2021-11-07 09:44:49,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412016821] [2021-11-07 09:44:49,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 09:44:49,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-07 09:44:49,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:44:49,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-07 09:44:49,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=685, Unknown=7, NotChecked=0, Total=812 [2021-11-07 09:44:49,426 INFO L87 Difference]: Start difference. First operand 612 states and 764 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:07,335 WARN L227 SmtUtils]: Spent 17.85s on a formula simplification. DAG size of input: 31 DAG size of output: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:45:07,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:45:07,622 INFO L93 Difference]: Finished difference Result 1027 states and 1274 transitions. [2021-11-07 09:45:07,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 09:45:07,623 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 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 [2021-11-07 09:45:07,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:45:07,627 INFO L225 Difference]: With dead ends: 1027 [2021-11-07 09:45:07,627 INFO L226 Difference]: Without dead ends: 944 [2021-11-07 09:45:07,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 114027.71ms TimeCoverageRelationStatistics Valid=172, Invalid=943, Unknown=7, NotChecked=0, Total=1122 [2021-11-07 09:45:07,629 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 272 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 168.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.30ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 211.78ms IncrementalHoareTripleChecker+Time [2021-11-07 09:45:07,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 1904 Invalid, 546 Unknown, 0 Unchecked, 5.30ms Time], IncrementalHoareTripleChecker [16 Valid, 332 Invalid, 0 Unknown, 198 Unchecked, 211.78ms Time] [2021-11-07 09:45:07,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2021-11-07 09:45:07,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 773. [2021-11-07 09:45:07,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 769 states have (on average 1.247074122236671) internal successors, (959), 772 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:07,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 959 transitions. [2021-11-07 09:45:07,672 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 959 transitions. Word has length 67 [2021-11-07 09:45:07,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:45:07,672 INFO L470 AbstractCegarLoop]: Abstraction has 773 states and 959 transitions. [2021-11-07 09:45:07,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:07,673 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 959 transitions. [2021-11-07 09:45:07,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 09:45:07,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:45:07,674 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:45:07,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-07 09:45:07,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:45:07,888 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:45:07,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:45:07,888 INFO L85 PathProgramCache]: Analyzing trace with hash 27935740, now seen corresponding path program 1 times [2021-11-07 09:45:07,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:45:07,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613966747] [2021-11-07 09:45:07,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:45:07,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:45:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:45:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:45:07,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:45:07,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613966747] [2021-11-07 09:45:07,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613966747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:45:07,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:45:07,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 09:45:07,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710672422] [2021-11-07 09:45:07,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:45:07,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:45:07,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:45:07,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:45:07,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:45:07,981 INFO L87 Difference]: Start difference. First operand 773 states and 959 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:08,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:45:08,059 INFO L93 Difference]: Finished difference Result 907 states and 1131 transitions. [2021-11-07 09:45:08,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:45:08,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 09:45:08,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:45:08,062 INFO L225 Difference]: With dead ends: 907 [2021-11-07 09:45:08,062 INFO L226 Difference]: Without dead ends: 765 [2021-11-07 09:45:08,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 34.99ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:45:08,063 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 346 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.10ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.04ms IncrementalHoareTripleChecker+Time [2021-11-07 09:45:08,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 293 Invalid, 42 Unknown, 0 Unchecked, 1.10ms Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 24.04ms Time] [2021-11-07 09:45:08,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2021-11-07 09:45:08,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 765. [2021-11-07 09:45:08,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 761 states have (on average 1.2339027595269383) internal successors, (939), 764 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:08,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 939 transitions. [2021-11-07 09:45:08,096 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 939 transitions. Word has length 67 [2021-11-07 09:45:08,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:45:08,097 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 939 transitions. [2021-11-07 09:45:08,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:08,097 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 939 transitions. [2021-11-07 09:45:08,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 09:45:08,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:45:08,098 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:45:08,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 09:45:08,099 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:45:08,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:45:08,099 INFO L85 PathProgramCache]: Analyzing trace with hash -651587334, now seen corresponding path program 1 times [2021-11-07 09:45:08,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:45:08,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775633144] [2021-11-07 09:45:08,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:45:08,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:45:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:45:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:45:08,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:45:08,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775633144] [2021-11-07 09:45:08,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775633144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:45:08,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:45:08,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:45:08,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330836861] [2021-11-07 09:45:08,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:45:08,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:45:08,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:45:08,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:45:08,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:45:08,144 INFO L87 Difference]: Start difference. First operand 765 states and 939 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:08,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:45:08,203 INFO L93 Difference]: Finished difference Result 1106 states and 1367 transitions. [2021-11-07 09:45:08,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:45:08,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 09:45:08,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:45:08,205 INFO L225 Difference]: With dead ends: 1106 [2021-11-07 09:45:08,205 INFO L226 Difference]: Without dead ends: 346 [2021-11-07 09:45:08,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.45ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:45:08,207 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 10 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.58ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.38ms IncrementalHoareTripleChecker+Time [2021-11-07 09:45:08,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 375 Invalid, 74 Unknown, 0 Unchecked, 0.58ms Time], IncrementalHoareTripleChecker [19 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 36.38ms Time] [2021-11-07 09:45:08,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-11-07 09:45:08,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 341. [2021-11-07 09:45:08,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 337 states have (on average 1.2136498516320475) internal successors, (409), 340 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:08,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 409 transitions. [2021-11-07 09:45:08,224 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 409 transitions. Word has length 67 [2021-11-07 09:45:08,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:45:08,224 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 409 transitions. [2021-11-07 09:45:08,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:08,225 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 409 transitions. [2021-11-07 09:45:08,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 09:45:08,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:45:08,225 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:45:08,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 09:45:08,226 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:45:08,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:45:08,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1384277337, now seen corresponding path program 1 times [2021-11-07 09:45:08,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:45:08,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172002262] [2021-11-07 09:45:08,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:45:08,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:45:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:45:08,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:45:08,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:45:08,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172002262] [2021-11-07 09:45:08,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172002262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:45:08,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:45:08,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:45:08,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216275777] [2021-11-07 09:45:08,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:45:08,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:45:08,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:45:08,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:45:08,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:45:08,358 INFO L87 Difference]: Start difference. First operand 341 states and 409 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2021-11-07 09:45:08,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:45:08,461 INFO L93 Difference]: Finished difference Result 411 states and 493 transitions. [2021-11-07 09:45:08,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:45:08,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 09:45:08,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:45:08,462 INFO L225 Difference]: With dead ends: 411 [2021-11-07 09:45:08,462 INFO L226 Difference]: Without dead ends: 341 [2021-11-07 09:45:08,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 52.53ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:45:08,464 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 545 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.10ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.30ms IncrementalHoareTripleChecker+Time [2021-11-07 09:45:08,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 147 Invalid, 81 Unknown, 0 Unchecked, 1.10ms Time], IncrementalHoareTripleChecker [29 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 49.30ms Time] [2021-11-07 09:45:08,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-11-07 09:45:08,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2021-11-07 09:45:08,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 337 states have (on average 1.2077151335311573) internal successors, (407), 340 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:08,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 407 transitions. [2021-11-07 09:45:08,485 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 407 transitions. Word has length 69 [2021-11-07 09:45:08,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:45:08,485 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 407 transitions. [2021-11-07 09:45:08,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2021-11-07 09:45:08,485 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 407 transitions. [2021-11-07 09:45:08,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 09:45:08,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:45:08,486 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:45:08,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 09:45:08,486 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:45:08,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:45:08,487 INFO L85 PathProgramCache]: Analyzing trace with hash 80619544, now seen corresponding path program 1 times [2021-11-07 09:45:08,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:45:08,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663253206] [2021-11-07 09:45:08,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:45:08,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:45:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:45:08,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:45:08,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:45:08,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663253206] [2021-11-07 09:45:08,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663253206] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:45:08,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282166438] [2021-11-07 09:45:08,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:45:08,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:45:08,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:45:08,670 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:45:08,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 09:45:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:45:08,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-07 09:45:08,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:45:08,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:45:08,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 09:45:08,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-07 09:45:08,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:45:08,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:45:08,972 INFO L354 Elim1Store]: treesize reduction 68, result has 29.2 percent of original size [2021-11-07 09:45:08,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 48 [2021-11-07 09:45:09,652 INFO L354 Elim1Store]: treesize reduction 36, result has 25.0 percent of original size [2021-11-07 09:45:09,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 36 [2021-11-07 09:45:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:45:09,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 09:45:16,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3246 treesize of output 3214 [2021-11-07 09:45:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:45:17,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282166438] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 09:45:17,246 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 09:45:17,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2021-11-07 09:45:17,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316209092] [2021-11-07 09:45:17,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 09:45:17,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-07 09:45:17,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:45:17,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-07 09:45:17,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=583, Unknown=2, NotChecked=0, Total=650 [2021-11-07 09:45:17,247 INFO L87 Difference]: Start difference. First operand 341 states and 407 transitions. Second operand has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:18,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:45:18,441 INFO L93 Difference]: Finished difference Result 626 states and 738 transitions. [2021-11-07 09:45:18,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 09:45:18,442 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 09:45:18,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:45:18,444 INFO L225 Difference]: With dead ends: 626 [2021-11-07 09:45:18,444 INFO L226 Difference]: Without dead ends: 468 [2021-11-07 09:45:18,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 7657.30ms TimeCoverageRelationStatistics Valid=176, Invalid=1382, Unknown=2, NotChecked=0, Total=1560 [2021-11-07 09:45:18,445 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 1015 mSDsluCounter, 2102 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 494.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 2258 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.59ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 588.12ms IncrementalHoareTripleChecker+Time [2021-11-07 09:45:18,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 2258 Invalid, 928 Unknown, 0 Unchecked, 8.59ms Time], IncrementalHoareTripleChecker [50 Valid, 803 Invalid, 0 Unknown, 75 Unchecked, 588.12ms Time] [2021-11-07 09:45:18,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-11-07 09:45:18,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 329. [2021-11-07 09:45:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 325 states have (on average 1.2) internal successors, (390), 328 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:18,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 390 transitions. [2021-11-07 09:45:18,472 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 390 transitions. Word has length 69 [2021-11-07 09:45:18,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:45:18,472 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 390 transitions. [2021-11-07 09:45:18,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:18,473 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 390 transitions. [2021-11-07 09:45:18,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 09:45:18,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:45:18,475 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:45:18,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 09:45:18,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:45:18,688 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:45:18,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:45:18,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1040503474, now seen corresponding path program 1 times [2021-11-07 09:45:18,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:45:18,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533224391] [2021-11-07 09:45:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:45:18,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:45:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:45:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 09:45:18,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:45:18,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533224391] [2021-11-07 09:45:18,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533224391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:45:18,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:45:18,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:45:18,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87703602] [2021-11-07 09:45:18,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:45:18,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:45:18,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:45:18,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:45:18,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:45:18,735 INFO L87 Difference]: Start difference. First operand 329 states and 390 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:18,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:45:18,829 INFO L93 Difference]: Finished difference Result 687 states and 813 transitions. [2021-11-07 09:45:18,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:45:18,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-07 09:45:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:45:18,832 INFO L225 Difference]: With dead ends: 687 [2021-11-07 09:45:18,832 INFO L226 Difference]: Without dead ends: 431 [2021-11-07 09:45:18,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.61ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:45:18,834 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 93 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.75ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.64ms IncrementalHoareTripleChecker+Time [2021-11-07 09:45:18,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 291 Invalid, 73 Unknown, 0 Unchecked, 0.75ms Time], IncrementalHoareTripleChecker [17 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 63.64ms Time] [2021-11-07 09:45:18,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-07 09:45:18,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 309. [2021-11-07 09:45:18,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 305 states have (on average 1.180327868852459) internal successors, (360), 308 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) [2021-11-07 09:45:18,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 360 transitions. [2021-11-07 09:45:18,858 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 360 transitions. Word has length 74 [2021-11-07 09:45:18,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:45:18,859 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 360 transitions. [2021-11-07 09:45:18,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:18,859 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 360 transitions. [2021-11-07 09:45:18,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 09:45:18,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:45:18,862 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:45:18,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 09:45:18,862 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:45:18,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:45:18,863 INFO L85 PathProgramCache]: Analyzing trace with hash 500105518, now seen corresponding path program 1 times [2021-11-07 09:45:18,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:45:18,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697338808] [2021-11-07 09:45:18,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:45:18,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:45:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:45:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 09:45:19,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:45:19,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697338808] [2021-11-07 09:45:19,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697338808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:45:19,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:45:19,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 09:45:19,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677777228] [2021-11-07 09:45:19,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:45:19,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:45:19,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:45:19,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:45:19,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:45:19,060 INFO L87 Difference]: Start difference. First operand 309 states and 360 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:19,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:45:19,420 INFO L93 Difference]: Finished difference Result 805 states and 930 transitions. [2021-11-07 09:45:19,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 09:45:19,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-07 09:45:19,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:45:19,423 INFO L225 Difference]: With dead ends: 805 [2021-11-07 09:45:19,424 INFO L226 Difference]: Without dead ends: 593 [2021-11-07 09:45:19,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 150.48ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:45:19,425 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 322 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 171.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.45ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 204.02ms IncrementalHoareTripleChecker+Time [2021-11-07 09:45:19,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 539 Invalid, 311 Unknown, 0 Unchecked, 2.45ms Time], IncrementalHoareTripleChecker [50 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 204.02ms Time] [2021-11-07 09:45:19,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-11-07 09:45:19,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 317. [2021-11-07 09:45:19,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 313 states have (on average 1.1757188498402555) internal successors, (368), 316 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:19,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 368 transitions. [2021-11-07 09:45:19,454 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 368 transitions. Word has length 74 [2021-11-07 09:45:19,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:45:19,454 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 368 transitions. [2021-11-07 09:45:19,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:19,455 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 368 transitions. [2021-11-07 09:45:19,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 09:45:19,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:45:19,456 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:45:19,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 09:45:19,457 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:45:19,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:45:19,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1393591856, now seen corresponding path program 1 times [2021-11-07 09:45:19,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:45:19,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390865738] [2021-11-07 09:45:19,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:45:19,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:45:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:45:19,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 09:45:19,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:45:19,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390865738] [2021-11-07 09:45:19,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390865738] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:45:19,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523732489] [2021-11-07 09:45:19,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:45:19,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:45:19,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:45:19,672 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:45:19,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 09:45:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:45:19,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 81 conjunts are in the unsatisfiable core [2021-11-07 09:45:19,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:45:19,883 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 09:45:19,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 50 [2021-11-07 09:45:19,900 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-07 09:45:19,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 54 [2021-11-07 09:45:26,022 INFO L354 Elim1Store]: treesize reduction 48, result has 40.0 percent of original size [2021-11-07 09:45:26,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 92 [2021-11-07 09:45:26,071 INFO L354 Elim1Store]: treesize reduction 22, result has 64.5 percent of original size [2021-11-07 09:45:26,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 92 [2021-11-07 09:45:26,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:45:26,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 09:45:26,903 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:45:26,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523732489] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 09:45:26,904 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 09:45:26,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 11] total 33 [2021-11-07 09:45:26,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314625328] [2021-11-07 09:45:26,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 09:45:26,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-07 09:45:26,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:45:26,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-07 09:45:26,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=948, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 09:45:26,906 INFO L87 Difference]: Start difference. First operand 317 states and 368 transitions. Second operand has 33 states, 33 states have (on average 5.7272727272727275) internal successors, (189), 33 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:32,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:45:32,376 INFO L93 Difference]: Finished difference Result 854 states and 977 transitions. [2021-11-07 09:45:32,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-07 09:45:32,377 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.7272727272727275) internal successors, (189), 33 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-07 09:45:32,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:45:32,379 INFO L225 Difference]: With dead ends: 854 [2021-11-07 09:45:32,380 INFO L226 Difference]: Without dead ends: 712 [2021-11-07 09:45:32,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 132 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 9145.35ms TimeCoverageRelationStatistics Valid=522, Invalid=3017, Unknown=1, NotChecked=0, Total=3540 [2021-11-07 09:45:32,381 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 494 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 692.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 3289 SdHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.27ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 273 IncrementalHoareTripleChecker+Unchecked, 806.43ms IncrementalHoareTripleChecker+Time [2021-11-07 09:45:32,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 3289 Invalid, 1615 Unknown, 0 Unchecked, 10.27ms Time], IncrementalHoareTripleChecker [29 Valid, 1313 Invalid, 0 Unknown, 273 Unchecked, 806.43ms Time] [2021-11-07 09:45:32,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-11-07 09:45:32,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 365. [2021-11-07 09:45:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 361 states have (on average 1.1578947368421053) internal successors, (418), 364 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:32,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 418 transitions. [2021-11-07 09:45:32,411 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 418 transitions. Word has length 74 [2021-11-07 09:45:32,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:45:32,411 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 418 transitions. [2021-11-07 09:45:32,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.7272727272727275) internal successors, (189), 33 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:32,411 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 418 transitions. [2021-11-07 09:45:32,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 09:45:32,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:45:32,412 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:45:32,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 09:45:32,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-07 09:45:32,624 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:45:32,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:45:32,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1620082764, now seen corresponding path program 2 times [2021-11-07 09:45:32,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:45:32,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824518945] [2021-11-07 09:45:32,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:45:32,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:45:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:45:32,821 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 09:45:32,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:45:32,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824518945] [2021-11-07 09:45:32,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824518945] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:45:32,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923672748] [2021-11-07 09:45:32,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 09:45:32,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:45:32,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:45:32,832 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:45:32,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 09:45:32,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 09:45:32,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 09:45:32,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-07 09:45:32,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:45:33,031 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 09:45:33,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 50 [2021-11-07 09:45:33,049 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-07 09:45:33,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 54 [2021-11-07 09:45:37,025 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-11-07 09:45:37,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 92 [2021-11-07 09:45:37,054 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 09:45:37,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 95 [2021-11-07 09:45:37,189 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 09:45:37,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:45:37,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923672748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:45:37,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 09:45:37,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 20 [2021-11-07 09:45:37,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655803815] [2021-11-07 09:45:37,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:45:37,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 09:45:37,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:45:37,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 09:45:37,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-11-07 09:45:37,191 INFO L87 Difference]: Start difference. First operand 365 states and 418 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:37,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:45:37,270 INFO L93 Difference]: Finished difference Result 432 states and 498 transitions. [2021-11-07 09:45:37,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 09:45:37,271 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-07 09:45:37,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:45:37,272 INFO L225 Difference]: With dead ends: 432 [2021-11-07 09:45:37,273 INFO L226 Difference]: Without dead ends: 356 [2021-11-07 09:45:37,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1783.22ms TimeCoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2021-11-07 09:45:37,274 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 29 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.89ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 24.72ms IncrementalHoareTripleChecker+Time [2021-11-07 09:45:37,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 800 Invalid, 178 Unknown, 0 Unchecked, 0.89ms Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 147 Unchecked, 24.72ms Time] [2021-11-07 09:45:37,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-11-07 09:45:37,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 312. [2021-11-07 09:45:37,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 308 states have (on average 1.1623376623376624) internal successors, (358), 311 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:37,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 358 transitions. [2021-11-07 09:45:37,306 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 358 transitions. Word has length 75 [2021-11-07 09:45:37,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:45:37,306 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 358 transitions. [2021-11-07 09:45:37,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:45:37,307 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 358 transitions. [2021-11-07 09:45:37,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 09:45:37,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:45:37,308 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:45:37,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 09:45:37,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:45:37,528 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:45:37,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:45:37,529 INFO L85 PathProgramCache]: Analyzing trace with hash 841974699, now seen corresponding path program 1 times [2021-11-07 09:45:37,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:45:37,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280790596] [2021-11-07 09:45:37,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:45:37,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:45:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:45:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:45:37,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:45:37,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280790596] [2021-11-07 09:45:37,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280790596] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:45:37,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345284271] [2021-11-07 09:45:37,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:45:37,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:45:37,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:45:37,929 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:45:37,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 09:45:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:45:38,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 127 conjunts are in the unsatisfiable core [2021-11-07 09:45:38,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:45:38,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2021-11-07 09:45:38,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:45:38,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2021-11-07 09:45:39,712 INFO L354 Elim1Store]: treesize reduction 58, result has 4.9 percent of original size [2021-11-07 09:45:39,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 154 treesize of output 88 [2021-11-07 09:45:39,722 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-11-07 09:45:39,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 31 [2021-11-07 09:45:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:45:39,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 09:45:40,835 INFO L354 Elim1Store]: treesize reduction 331, result has 32.4 percent of original size [2021-11-07 09:45:40,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 4734 treesize of output 4408 [2021-11-07 09:45:41,105 INFO L354 Elim1Store]: treesize reduction 453, result has 25.0 percent of original size [2021-11-07 09:45:41,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 29 case distinctions, treesize of input 24945 treesize of output 23133 [2021-11-07 09:45:42,557 INFO L354 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2021-11-07 09:45:42,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 17337 treesize of output 16661 [2021-11-07 09:45:42,704 INFO L354 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2021-11-07 09:45:42,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 16661 treesize of output 16311 [2021-11-07 09:45:48,055 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 09:45:48,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2021-11-07 09:45:48,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 09:45:48,823 INFO L354 Elim1Store]: treesize reduction 20, result has 68.3 percent of original size [2021-11-07 09:45:48,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 217 treesize of output 243 [2021-11-07 09:45:49,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 09:45:49,876 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 09:45:49,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 209 treesize of output 223 [2021-11-07 09:45:51,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 09:45:51,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 09:45:51,358 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-07 09:45:51,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 229 treesize of output 1 [2021-11-07 09:45:52,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 09:45:52,505 INFO L354 Elim1Store]: treesize reduction 10, result has 88.5 percent of original size [2021-11-07 09:45:52,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 1001 treesize of output 1003 [2021-11-07 09:46:09,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-07 09:46:09,779 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 09:46:09,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 223 treesize of output 223 [2021-11-07 09:46:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:46:10,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345284271] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 09:46:10,157 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 09:46:10,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 22] total 48 [2021-11-07 09:46:10,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917893161] [2021-11-07 09:46:10,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 09:46:10,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-07 09:46:10,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:46:10,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-07 09:46:10,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1983, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 09:46:10,159 INFO L87 Difference]: Start difference. First operand 312 states and 358 transitions. Second operand has 48 states, 48 states have (on average 3.625) internal successors, (174), 48 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:46:21,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:46:21,436 INFO L93 Difference]: Finished difference Result 1105 states and 1240 transitions. [2021-11-07 09:46:21,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-11-07 09:46:21,437 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.625) internal successors, (174), 48 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-07 09:46:21,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:46:21,440 INFO L225 Difference]: With dead ends: 1105 [2021-11-07 09:46:21,440 INFO L226 Difference]: Without dead ends: 938 [2021-11-07 09:46:21,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5240 ImplicationChecksByTransitivity, 9512.66ms TimeCoverageRelationStatistics Valid=4342, Invalid=13480, Unknown=0, NotChecked=0, Total=17822 [2021-11-07 09:46:21,445 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 4997 mSDsluCounter, 3394 mSDsCounter, 0 mSdLazyCounter, 3194 mSolverCounterSat, 803 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2275.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4997 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 3997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.18ms SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 3194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2654.24ms IncrementalHoareTripleChecker+Time [2021-11-07 09:46:21,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4997 Valid, 3479 Invalid, 3997 Unknown, 0 Unchecked, 25.18ms Time], IncrementalHoareTripleChecker [803 Valid, 3194 Invalid, 0 Unknown, 0 Unchecked, 2654.24ms Time] [2021-11-07 09:46:21,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-11-07 09:46:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 385. [2021-11-07 09:46:21,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 381 states have (on average 1.1732283464566928) internal successors, (447), 384 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:46:21,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 447 transitions. [2021-11-07 09:46:21,487 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 447 transitions. Word has length 77 [2021-11-07 09:46:21,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:46:21,488 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 447 transitions. [2021-11-07 09:46:21,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.625) internal successors, (174), 48 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:46:21,488 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 447 transitions. [2021-11-07 09:46:21,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 09:46:21,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:46:21,489 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:46:21,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 09:46:21,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:46:21,704 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:46:21,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:46:21,704 INFO L85 PathProgramCache]: Analyzing trace with hash 32628073, now seen corresponding path program 1 times [2021-11-07 09:46:21,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:46:21,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159763487] [2021-11-07 09:46:21,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:46:21,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:46:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:46:21,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:46:21,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:46:21,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159763487] [2021-11-07 09:46:21,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159763487] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:46:21,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940418875] [2021-11-07 09:46:21,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:46:21,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:46:21,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:46:21,940 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:46:21,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 09:46:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:46:22,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 80 conjunts are in the unsatisfiable core [2021-11-07 09:46:22,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:46:22,140 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-07 09:46:22,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2021-11-07 09:46:42,191 WARN L227 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:46:54,273 WARN L227 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:47:06,290 WARN L227 SmtUtils]: Spent 9.88s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:47:16,365 WARN L227 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:47:26,533 WARN L227 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:47:32,625 WARN L227 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:47:40,764 WARN L227 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:47:46,981 WARN L227 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:47:57,249 WARN L227 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:48:07,458 WARN L227 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:48:13,555 WARN L227 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:48:21,924 WARN L227 SmtUtils]: Spent 8.27s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:48:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:48:21,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 09:48:22,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 381 treesize of output 365 [2021-11-07 09:48:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:48:22,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940418875] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 09:48:22,479 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 09:48:22,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 35 [2021-11-07 09:48:22,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111960244] [2021-11-07 09:48:22,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 09:48:22,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-07 09:48:22,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:48:22,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-07 09:48:22,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1048, Unknown=7, NotChecked=0, Total=1190 [2021-11-07 09:48:22,480 INFO L87 Difference]: Start difference. First operand 385 states and 447 transitions. Second operand has 35 states, 35 states have (on average 4.8) internal successors, (168), 35 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:48:32,566 WARN L227 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:48:52,627 WARN L227 SmtUtils]: Spent 20.05s on a formula simplification. DAG size of input: 31 DAG size of output: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-07 09:48:52,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:48:52,790 INFO L93 Difference]: Finished difference Result 452 states and 522 transitions. [2021-11-07 09:48:52,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 09:48:52,791 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.8) internal successors, (168), 35 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-07 09:48:52,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:48:52,792 INFO L225 Difference]: With dead ends: 452 [2021-11-07 09:48:52,792 INFO L226 Difference]: Without dead ends: 393 [2021-11-07 09:48:52,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 149438.77ms TimeCoverageRelationStatistics Valid=160, Invalid=1239, Unknown=7, NotChecked=0, Total=1406 [2021-11-07 09:48:52,793 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 80 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 131.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.23ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 154.64ms IncrementalHoareTripleChecker+Time [2021-11-07 09:48:52,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 1307 Invalid, 367 Unknown, 0 Unchecked, 2.23ms Time], IncrementalHoareTripleChecker [3 Valid, 251 Invalid, 0 Unknown, 113 Unchecked, 154.64ms Time] [2021-11-07 09:48:52,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-11-07 09:48:52,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 385. [2021-11-07 09:48:52,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 381 states have (on average 1.1706036745406825) internal successors, (446), 384 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:48:52,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 446 transitions. [2021-11-07 09:48:52,828 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 446 transitions. Word has length 77 [2021-11-07 09:48:52,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:48:52,828 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 446 transitions. [2021-11-07 09:48:52,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.8) internal successors, (168), 35 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:48:52,829 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 446 transitions. [2021-11-07 09:48:52,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 09:48:52,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:48:52,830 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:48:52,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 09:48:53,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-07 09:48:53,038 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:48:53,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:48:53,038 INFO L85 PathProgramCache]: Analyzing trace with hash 420906986, now seen corresponding path program 2 times [2021-11-07 09:48:53,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:48:53,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17239888] [2021-11-07 09:48:53,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:48:53,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:48:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:48:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 09:48:53,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:48:53,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17239888] [2021-11-07 09:48:53,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17239888] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:48:53,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423918806] [2021-11-07 09:48:53,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 09:48:53,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:48:53,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:48:53,260 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:48:53,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 09:48:53,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 09:48:53,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 09:48:53,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-07 09:48:53,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:48:53,465 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 09:48:53,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 50 [2021-11-07 09:48:53,482 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-07 09:48:53,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 54 [2021-11-07 09:48:54,894 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-07 09:48:54,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 56 [2021-11-07 09:48:54,902 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 09:48:54,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2021-11-07 09:48:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 09:48:54,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:48:54,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423918806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:48:54,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 09:48:54,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 20 [2021-11-07 09:48:54,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222308282] [2021-11-07 09:48:54,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:48:54,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 09:48:54,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:48:54,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 09:48:54,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-11-07 09:48:54,952 INFO L87 Difference]: Start difference. First operand 385 states and 446 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 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) [2021-11-07 09:48:56,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:48:56,058 INFO L93 Difference]: Finished difference Result 461 states and 539 transitions. [2021-11-07 09:48:56,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 09:48:56,058 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 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 77 [2021-11-07 09:48:56,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:48:56,059 INFO L225 Difference]: With dead ends: 461 [2021-11-07 09:48:56,059 INFO L226 Difference]: Without dead ends: 383 [2021-11-07 09:48:56,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1169.27ms TimeCoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2021-11-07 09:48:56,060 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 541 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 197.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.21ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 227.57ms IncrementalHoareTripleChecker+Time [2021-11-07 09:48:56,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 452 Invalid, 333 Unknown, 0 Unchecked, 2.21ms Time], IncrementalHoareTripleChecker [70 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 227.57ms Time] [2021-11-07 09:48:56,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-11-07 09:48:56,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2021-11-07 09:48:56,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 379 states have (on average 1.158311345646438) internal successors, (439), 382 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:48:56,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 439 transitions. [2021-11-07 09:48:56,094 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 439 transitions. Word has length 77 [2021-11-07 09:48:56,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:48:56,094 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 439 transitions. [2021-11-07 09:48:56,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 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) [2021-11-07 09:48:56,095 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 439 transitions. [2021-11-07 09:48:56,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 09:48:56,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:48:56,095 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:48:56,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-07 09:48:56,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-07 09:48:56,314 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:48:56,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:48:56,315 INFO L85 PathProgramCache]: Analyzing trace with hash 561523053, now seen corresponding path program 1 times [2021-11-07 09:48:56,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:48:56,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234771243] [2021-11-07 09:48:56,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:48:56,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:48:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:48:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 09:48:56,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:48:56,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234771243] [2021-11-07 09:48:56,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234771243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:48:56,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:48:56,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 09:48:56,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478483017] [2021-11-07 09:48:56,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:48:56,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:48:56,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:48:56,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:48:56,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:48:56,391 INFO L87 Difference]: Start difference. First operand 383 states and 439 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:48:56,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:48:56,516 INFO L93 Difference]: Finished difference Result 471 states and 539 transitions. [2021-11-07 09:48:56,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:48:56,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-07 09:48:56,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:48:56,518 INFO L225 Difference]: With dead ends: 471 [2021-11-07 09:48:56,518 INFO L226 Difference]: Without dead ends: 458 [2021-11-07 09:48:56,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.75ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:48:56,520 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 121 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.93ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.41ms IncrementalHoareTripleChecker+Time [2021-11-07 09:48:56,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 560 Invalid, 88 Unknown, 0 Unchecked, 0.93ms Time], IncrementalHoareTripleChecker [11 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 49.41ms Time] [2021-11-07 09:48:56,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-07 09:48:56,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 390. [2021-11-07 09:48:56,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 386 states have (on average 1.1476683937823835) internal successors, (443), 389 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:48:56,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 443 transitions. [2021-11-07 09:48:56,564 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 443 transitions. Word has length 80 [2021-11-07 09:48:56,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:48:56,564 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 443 transitions. [2021-11-07 09:48:56,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:48:56,564 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 443 transitions. [2021-11-07 09:48:56,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 09:48:56,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:48:56,565 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:48:56,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-07 09:48:56,566 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:48:56,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:48:56,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1542092017, now seen corresponding path program 1 times [2021-11-07 09:48:56,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:48:56,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389882147] [2021-11-07 09:48:56,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:48:56,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:48:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:48:56,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 09:48:56,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:48:56,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389882147] [2021-11-07 09:48:56,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389882147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:48:56,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:48:56,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:48:56,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905159851] [2021-11-07 09:48:56,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:48:56,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:48:56,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:48:56,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:48:56,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:48:56,647 INFO L87 Difference]: Start difference. First operand 390 states and 443 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:48:56,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:48:56,708 INFO L93 Difference]: Finished difference Result 390 states and 443 transitions. [2021-11-07 09:48:56,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:48:56,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-07 09:48:56,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:48:56,710 INFO L225 Difference]: With dead ends: 390 [2021-11-07 09:48:56,710 INFO L226 Difference]: Without dead ends: 388 [2021-11-07 09:48:56,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:48:56,711 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 44 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.87ms IncrementalHoareTripleChecker+Time [2021-11-07 09:48:56,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 292 Invalid, 12 Unknown, 0 Unchecked, 0.51ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 12.87ms Time] [2021-11-07 09:48:56,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-11-07 09:48:56,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2021-11-07 09:48:56,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 385 states have (on average 1.1402597402597403) internal successors, (439), 387 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:48:56,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 439 transitions. [2021-11-07 09:48:56,757 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 439 transitions. Word has length 82 [2021-11-07 09:48:56,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:48:56,757 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 439 transitions. [2021-11-07 09:48:56,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:48:56,758 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 439 transitions. [2021-11-07 09:48:56,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 09:48:56,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:48:56,759 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:48:56,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-07 09:48:56,759 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:48:56,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:48:56,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1488938402, now seen corresponding path program 1 times [2021-11-07 09:48:56,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:48:56,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54184813] [2021-11-07 09:48:56,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:48:56,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:48:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:48:56,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 09:48:56,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:48:56,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54184813] [2021-11-07 09:48:56,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54184813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:48:56,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:48:56,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:48:56,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788574377] [2021-11-07 09:48:56,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:48:56,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:48:56,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:48:56,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:48:56,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:48:56,924 INFO L87 Difference]: Start difference. First operand 388 states and 439 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) [2021-11-07 09:48:57,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:48:57,090 INFO L93 Difference]: Finished difference Result 388 states and 439 transitions. [2021-11-07 09:48:57,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:48:57,090 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 85 [2021-11-07 09:48:57,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:48:57,092 INFO L225 Difference]: With dead ends: 388 [2021-11-07 09:48:57,092 INFO L226 Difference]: Without dead ends: 386 [2021-11-07 09:48:57,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 103.09ms TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:48:57,092 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 191 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.00ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.75ms IncrementalHoareTripleChecker+Time [2021-11-07 09:48:57,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 353 Invalid, 85 Unknown, 0 Unchecked, 1.00ms Time], IncrementalHoareTripleChecker [10 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 54.75ms Time] [2021-11-07 09:48:57,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-07 09:48:57,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2021-11-07 09:48:57,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 384 states have (on average 1.1328125) internal successors, (435), 385 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:48:57,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 435 transitions. [2021-11-07 09:48:57,139 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 435 transitions. Word has length 85 [2021-11-07 09:48:57,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:48:57,140 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 435 transitions. [2021-11-07 09:48:57,140 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) [2021-11-07 09:48:57,140 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 435 transitions. [2021-11-07 09:48:57,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 09:48:57,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:48:57,141 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:48:57,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-07 09:48:57,141 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:48:57,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:48:57,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1748357123, now seen corresponding path program 1 times [2021-11-07 09:48:57,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:48:57,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588754598] [2021-11-07 09:48:57,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:48:57,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:48:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:48:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:48:57,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:48:57,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588754598] [2021-11-07 09:48:57,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588754598] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:48:57,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225569199] [2021-11-07 09:48:57,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:48:57,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:48:57,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:48:57,566 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:48:57,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 09:48:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:48:57,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 107 conjunts are in the unsatisfiable core [2021-11-07 09:48:57,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:48:57,784 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-07 09:48:57,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-07 09:48:57,795 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-07 09:48:57,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 54 [2021-11-07 09:49:01,521 INFO L354 Elim1Store]: treesize reduction 107, result has 28.2 percent of original size [2021-11-07 09:49:01,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 160 treesize of output 139 [2021-11-07 09:49:01,567 INFO L354 Elim1Store]: treesize reduction 45, result has 53.6 percent of original size [2021-11-07 09:49:01,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 113 treesize of output 120 [2021-11-07 09:49:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:49:01,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 09:49:02,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:49:02,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225569199] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 09:49:02,333 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 09:49:02,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 16] total 41 [2021-11-07 09:49:02,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743782540] [2021-11-07 09:49:02,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 09:49:02,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-07 09:49:02,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:49:02,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-07 09:49:02,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1493, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 09:49:02,335 INFO L87 Difference]: Start difference. First operand 386 states and 435 transitions. Second operand has 41 states, 41 states have (on average 4.585365853658536) internal successors, (188), 41 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:49:03,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:49:03,306 INFO L93 Difference]: Finished difference Result 476 states and 532 transitions. [2021-11-07 09:49:03,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-07 09:49:03,307 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.585365853658536) internal successors, (188), 41 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-07 09:49:03,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:49:03,308 INFO L225 Difference]: With dead ends: 476 [2021-11-07 09:49:03,309 INFO L226 Difference]: Without dead ends: 423 [2021-11-07 09:49:03,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 1969.55ms TimeCoverageRelationStatistics Valid=256, Invalid=2606, Unknown=0, NotChecked=0, Total=2862 [2021-11-07 09:49:03,310 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 223 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 283.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.96ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 324.13ms IncrementalHoareTripleChecker+Time [2021-11-07 09:49:03,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 1834 Invalid, 719 Unknown, 0 Unchecked, 3.96ms Time], IncrementalHoareTripleChecker [31 Valid, 425 Invalid, 0 Unknown, 263 Unchecked, 324.13ms Time] [2021-11-07 09:49:03,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-11-07 09:49:03,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 391. [2021-11-07 09:49:03,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 389 states have (on average 1.1336760925449871) internal successors, (441), 390 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:49:03,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 441 transitions. [2021-11-07 09:49:03,359 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 441 transitions. Word has length 85 [2021-11-07 09:49:03,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:49:03,359 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 441 transitions. [2021-11-07 09:49:03,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.585365853658536) internal successors, (188), 41 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:49:03,359 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 441 transitions. [2021-11-07 09:49:03,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 09:49:03,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:49:03,360 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:49:03,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-07 09:49:03,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-07 09:49:03,563 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:49:03,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:49:03,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1737263547, now seen corresponding path program 1 times [2021-11-07 09:49:03,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:49:03,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160766647] [2021-11-07 09:49:03,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:49:03,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:49:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:49:03,905 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:49:03,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:49:03,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160766647] [2021-11-07 09:49:03,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160766647] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:49:03,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60910156] [2021-11-07 09:49:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:49:03,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:49:03,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:49:03,916 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:49:03,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 09:49:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:49:04,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 91 conjunts are in the unsatisfiable core [2021-11-07 09:49:04,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:49:04,118 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 09:49:04,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 50 [2021-11-07 09:49:04,135 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-07 09:49:04,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 54 [2021-11-07 09:49:10,536 INFO L354 Elim1Store]: treesize reduction 66, result has 17.5 percent of original size [2021-11-07 09:49:10,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 71 [2021-11-07 09:49:10,571 INFO L354 Elim1Store]: treesize reduction 22, result has 64.5 percent of original size [2021-11-07 09:49:10,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 77 [2021-11-07 09:49:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:49:10,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 09:49:11,349 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 09:49:11,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60910156] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 09:49:11,349 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 09:49:11,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 12] total 38 [2021-11-07 09:49:11,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439442766] [2021-11-07 09:49:11,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 09:49:11,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-07 09:49:11,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:49:11,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-07 09:49:11,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1245, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 09:49:11,351 INFO L87 Difference]: Start difference. First operand 391 states and 441 transitions. Second operand has 38 states, 38 states have (on average 6.0) internal successors, (228), 38 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) [2021-11-07 09:49:11,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:49:11,856 INFO L93 Difference]: Finished difference Result 497 states and 549 transitions. [2021-11-07 09:49:11,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 09:49:11,856 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.0) internal successors, (228), 38 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-07 09:49:11,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:49:11,858 INFO L225 Difference]: With dead ends: 497 [2021-11-07 09:49:11,858 INFO L226 Difference]: Without dead ends: 441 [2021-11-07 09:49:11,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 4754.42ms TimeCoverageRelationStatistics Valid=220, Invalid=1850, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 09:49:11,859 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 274 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.80ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 200.05ms IncrementalHoareTripleChecker+Time [2021-11-07 09:49:11,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 1245 Invalid, 337 Unknown, 0 Unchecked, 2.80ms Time], IncrementalHoareTripleChecker [15 Valid, 215 Invalid, 0 Unknown, 107 Unchecked, 200.05ms Time] [2021-11-07 09:49:11,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-11-07 09:49:11,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 372. [2021-11-07 09:49:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 370 states have (on average 1.1216216216216217) internal successors, (415), 371 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:49:11,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 415 transitions. [2021-11-07 09:49:11,905 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 415 transitions. Word has length 85 [2021-11-07 09:49:11,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:49:11,906 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 415 transitions. [2021-11-07 09:49:11,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 6.0) internal successors, (228), 38 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) [2021-11-07 09:49:11,906 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 415 transitions. [2021-11-07 09:49:11,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 09:49:11,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:49:11,907 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:49:11,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-07 09:49:12,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-07 09:49:12,108 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:49:12,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:49:12,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1881366369, now seen corresponding path program 1 times [2021-11-07 09:49:12,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:49:12,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718915640] [2021-11-07 09:49:12,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:49:12,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:49:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:49:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 09:49:12,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:49:12,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718915640] [2021-11-07 09:49:12,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718915640] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:49:12,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130220799] [2021-11-07 09:49:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:49:12,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:49:12,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:49:12,344 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:49:12,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 09:49:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:49:12,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-07 09:49:12,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:49:12,545 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-07 09:49:12,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-07 09:49:12,558 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-07 09:49:12,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 54 [2021-11-07 09:49:14,772 INFO L354 Elim1Store]: treesize reduction 52, result has 35.0 percent of original size [2021-11-07 09:49:14,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 99 treesize of output 93 [2021-11-07 09:49:14,866 INFO L354 Elim1Store]: treesize reduction 50, result has 65.8 percent of original size [2021-11-07 09:49:14,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 144 [2021-11-07 09:49:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 09:49:15,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 09:49:15,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 959 treesize of output 943 [2021-11-07 09:49:16,353 INFO L354 Elim1Store]: treesize reduction 305, result has 38.8 percent of original size [2021-11-07 09:49:16,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 29 case distinctions, treesize of input 7101 treesize of output 6563 [2021-11-07 09:49:16,536 INFO L354 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2021-11-07 09:49:16,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 6292 treesize of output 5666 [2021-11-07 09:49:32,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2021-11-07 09:49:32,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-07 09:49:32,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-07 09:49:33,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-11-07 09:49:33,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2021-11-07 09:49:34,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-07 09:49:34,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 09:49:34,880 INFO L354 Elim1Store]: treesize reduction 26, result has 67.1 percent of original size [2021-11-07 09:49:34,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 284 treesize of output 300 [2021-11-07 09:49:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 09:49:36,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130220799] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 09:49:36,680 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 09:49:36,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 15] total 36 [2021-11-07 09:49:36,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937958087] [2021-11-07 09:49:36,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 09:49:36,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-07 09:49:36,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:49:36,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-07 09:49:36,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1118, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 09:49:36,682 INFO L87 Difference]: Start difference. First operand 372 states and 415 transitions. Second operand has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:49:45,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:49:45,801 INFO L93 Difference]: Finished difference Result 616 states and 695 transitions. [2021-11-07 09:49:45,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-07 09:49:45,802 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 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 [2021-11-07 09:49:45,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:49:45,803 INFO L225 Difference]: With dead ends: 616 [2021-11-07 09:49:45,803 INFO L226 Difference]: Without dead ends: 532 [2021-11-07 09:49:45,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 160 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 9416.18ms TimeCoverageRelationStatistics Valid=374, Invalid=2596, Unknown=0, NotChecked=0, Total=2970 [2021-11-07 09:49:45,805 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 463 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 465.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.05ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 255 IncrementalHoareTripleChecker+Unchecked, 535.65ms IncrementalHoareTripleChecker+Time [2021-11-07 09:49:45,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 2095 Invalid, 1105 Unknown, 0 Unchecked, 6.05ms Time], IncrementalHoareTripleChecker [33 Valid, 817 Invalid, 0 Unknown, 255 Unchecked, 535.65ms Time] [2021-11-07 09:49:45,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-11-07 09:49:45,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 377. [2021-11-07 09:49:45,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 375 states have (on average 1.12) internal successors, (420), 376 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:49:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 420 transitions. [2021-11-07 09:49:45,852 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 420 transitions. Word has length 87 [2021-11-07 09:49:45,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:49:45,852 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 420 transitions. [2021-11-07 09:49:45,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:49:45,853 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 420 transitions. [2021-11-07 09:49:45,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 09:49:45,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:49:45,854 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:49:45,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 09:49:46,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-07 09:49:46,057 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:49:46,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:49:46,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1393938504, now seen corresponding path program 1 times [2021-11-07 09:49:46,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:49:46,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649368580] [2021-11-07 09:49:46,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:49:46,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:49:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:49:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 09:49:46,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:49:46,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649368580] [2021-11-07 09:49:46,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649368580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:49:46,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:49:46,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 09:49:46,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734703923] [2021-11-07 09:49:46,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:49:46,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:49:46,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:49:46,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:49:46,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:49:46,127 INFO L87 Difference]: Start difference. First operand 377 states and 420 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:49:46,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:49:46,226 INFO L93 Difference]: Finished difference Result 425 states and 472 transitions. [2021-11-07 09:49:46,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 09:49:46,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-07 09:49:46,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:49:46,227 INFO L225 Difference]: With dead ends: 425 [2021-11-07 09:49:46,227 INFO L226 Difference]: Without dead ends: 280 [2021-11-07 09:49:46,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.35ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:49:46,228 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 110 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.77ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.68ms IncrementalHoareTripleChecker+Time [2021-11-07 09:49:46,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 552 Invalid, 83 Unknown, 0 Unchecked, 0.77ms Time], IncrementalHoareTripleChecker [14 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 48.68ms Time] [2021-11-07 09:49:46,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-07 09:49:46,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 249. [2021-11-07 09:49:46,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 247 states have (on average 1.1093117408906883) internal successors, (274), 248 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:49:46,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 274 transitions. [2021-11-07 09:49:46,254 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 274 transitions. Word has length 93 [2021-11-07 09:49:46,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:49:46,254 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 274 transitions. [2021-11-07 09:49:46,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:49:46,255 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 274 transitions. [2021-11-07 09:49:46,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 09:49:46,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:49:46,255 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:49:46,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-07 09:49:46,256 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:49:46,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:49:46,256 INFO L85 PathProgramCache]: Analyzing trace with hash -86539151, now seen corresponding path program 2 times [2021-11-07 09:49:46,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:49:46,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783083704] [2021-11-07 09:49:46,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:49:46,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:49:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:49:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 09:49:46,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:49:46,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783083704] [2021-11-07 09:49:46,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783083704] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:49:46,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358575476] [2021-11-07 09:49:46,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 09:49:46,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:49:46,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:49:46,800 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:49:46,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 09:49:47,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 09:49:47,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 09:49:47,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 119 conjunts are in the unsatisfiable core [2021-11-07 09:49:47,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:49:47,088 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-07 09:49:47,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-07 09:49:47,100 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-07 09:49:47,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 54 [2021-11-07 09:50:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 09:50:00,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 09:50:01,998 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 09:50:01,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358575476] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 09:50:01,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-07 09:50:01,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [22, 23] total 55 [2021-11-07 09:50:01,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257032299] [2021-11-07 09:50:01,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:50:01,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 09:50:01,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:50:01,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 09:50:02,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2805, Unknown=0, NotChecked=0, Total=2970 [2021-11-07 09:50:02,000 INFO L87 Difference]: Start difference. First operand 249 states and 274 transitions. Second operand has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:50:03,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:50:03,857 INFO L93 Difference]: Finished difference Result 430 states and 473 transitions. [2021-11-07 09:50:03,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 09:50:03,858 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-07 09:50:03,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:50:03,859 INFO L225 Difference]: With dead ends: 430 [2021-11-07 09:50:03,859 INFO L226 Difference]: Without dead ends: 382 [2021-11-07 09:50:03,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 13589.17ms TimeCoverageRelationStatistics Valid=611, Invalid=5241, Unknown=0, NotChecked=0, Total=5852 [2021-11-07 09:50:03,861 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 1078 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 396.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.62ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 456.07ms IncrementalHoareTripleChecker+Time [2021-11-07 09:50:03,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1078 Valid, 888 Invalid, 714 Unknown, 0 Unchecked, 4.62ms Time], IncrementalHoareTripleChecker [68 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 456.07ms Time] [2021-11-07 09:50:03,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-07 09:50:03,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 252. [2021-11-07 09:50:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 250 states have (on average 1.108) internal successors, (277), 251 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:50:03,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 277 transitions. [2021-11-07 09:50:03,886 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 277 transitions. Word has length 95 [2021-11-07 09:50:03,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:50:03,886 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 277 transitions. [2021-11-07 09:50:03,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:50:03,887 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 277 transitions. [2021-11-07 09:50:03,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 09:50:03,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:50:03,887 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:50:03,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 09:50:04,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-07 09:50:04,104 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:50:04,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:50:04,104 INFO L85 PathProgramCache]: Analyzing trace with hash -895885777, now seen corresponding path program 1 times [2021-11-07 09:50:04,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:50:04,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129675605] [2021-11-07 09:50:04,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:50:04,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:50:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:50:04,379 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 09:50:04,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:50:04,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129675605] [2021-11-07 09:50:04,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129675605] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:50:04,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391130243] [2021-11-07 09:50:04,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:50:04,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:50:04,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:50:04,388 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:50:04,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 09:50:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:50:04,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-07 09:50:04,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:50:04,611 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-07 09:50:04,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-07 09:50:04,637 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-07 09:50:04,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 54 [2021-11-07 09:50:07,831 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 09:50:07,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 112 [2021-11-07 09:50:07,853 INFO L354 Elim1Store]: treesize reduction 14, result has 62.2 percent of original size [2021-11-07 09:50:07,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 98 [2021-11-07 09:50:07,902 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 09:50:07,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:50:07,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391130243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:50:07,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 09:50:07,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [15] total 28 [2021-11-07 09:50:07,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428553108] [2021-11-07 09:50:07,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:50:07,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 09:50:07,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:50:07,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 09:50:07,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2021-11-07 09:50:07,904 INFO L87 Difference]: Start difference. First operand 252 states and 277 transitions. Second operand has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:50:07,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:50:07,994 INFO L93 Difference]: Finished difference Result 317 states and 354 transitions. [2021-11-07 09:50:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 09:50:07,994 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-07 09:50:07,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:50:07,995 INFO L225 Difference]: With dead ends: 317 [2021-11-07 09:50:07,995 INFO L226 Difference]: Without dead ends: 252 [2021-11-07 09:50:07,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 734.52ms TimeCoverageRelationStatistics Valid=80, Invalid=790, Unknown=0, NotChecked=0, Total=870 [2021-11-07 09:50:07,996 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 23 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.95ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 211 IncrementalHoareTripleChecker+Unchecked, 33.85ms IncrementalHoareTripleChecker+Time [2021-11-07 09:50:07,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 890 Invalid, 239 Unknown, 0 Unchecked, 0.95ms Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 211 Unchecked, 33.85ms Time] [2021-11-07 09:50:07,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-07 09:50:08,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-11-07 09:50:08,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 250 states have (on average 1.104) internal successors, (276), 251 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:50:08,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 276 transitions. [2021-11-07 09:50:08,020 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 276 transitions. Word has length 95 [2021-11-07 09:50:08,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:50:08,021 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 276 transitions. [2021-11-07 09:50:08,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:50:08,021 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 276 transitions. [2021-11-07 09:50:08,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 09:50:08,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:50:08,022 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:50:08,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-07 09:50:08,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:50:08,240 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:50:08,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:50:08,241 INFO L85 PathProgramCache]: Analyzing trace with hash 353638822, now seen corresponding path program 1 times [2021-11-07 09:50:08,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:50:08,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157725316] [2021-11-07 09:50:08,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:50:08,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:50:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:50:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 09:50:08,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:50:08,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157725316] [2021-11-07 09:50:08,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157725316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:50:08,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:50:08,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:50:08,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896012617] [2021-11-07 09:50:08,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:50:08,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:50:08,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:50:08,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:50:08,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:50:08,407 INFO L87 Difference]: Start difference. First operand 252 states and 276 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:50:08,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:50:08,628 INFO L93 Difference]: Finished difference Result 256 states and 279 transitions. [2021-11-07 09:50:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:50:08,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 09:50:08,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:50:08,629 INFO L225 Difference]: With dead ends: 256 [2021-11-07 09:50:08,630 INFO L226 Difference]: Without dead ends: 252 [2021-11-07 09:50:08,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 116.98ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:50:08,630 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 263 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.19ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 111.34ms IncrementalHoareTripleChecker+Time [2021-11-07 09:50:08,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 260 Invalid, 153 Unknown, 0 Unchecked, 1.19ms Time], IncrementalHoareTripleChecker [16 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 111.34ms Time] [2021-11-07 09:50:08,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-07 09:50:08,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-11-07 09:50:08,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 250 states have (on average 1.096) internal successors, (274), 251 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:50:08,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 274 transitions. [2021-11-07 09:50:08,663 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 274 transitions. Word has length 96 [2021-11-07 09:50:08,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:50:08,663 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 274 transitions. [2021-11-07 09:50:08,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:50:08,663 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 274 transitions. [2021-11-07 09:50:08,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 09:50:08,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:50:08,664 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:50:08,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-07 09:50:08,665 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:50:08,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:50:08,665 INFO L85 PathProgramCache]: Analyzing trace with hash 2130493226, now seen corresponding path program 1 times [2021-11-07 09:50:08,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:50:08,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863129449] [2021-11-07 09:50:08,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:50:08,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:50:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:50:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 09:50:08,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:50:08,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863129449] [2021-11-07 09:50:08,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863129449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:50:08,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:50:08,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 09:50:08,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710855303] [2021-11-07 09:50:08,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:50:08,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 09:50:08,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:50:08,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 09:50:08,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:50:08,870 INFO L87 Difference]: Start difference. First operand 252 states and 274 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:50:09,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:50:09,106 INFO L93 Difference]: Finished difference Result 259 states and 280 transitions. [2021-11-07 09:50:09,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 09:50:09,106 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 09:50:09,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:50:09,107 INFO L225 Difference]: With dead ends: 259 [2021-11-07 09:50:09,107 INFO L226 Difference]: Without dead ends: 252 [2021-11-07 09:50:09,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 126.58ms TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:50:09,108 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 291 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 117.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.46ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 138.21ms IncrementalHoareTripleChecker+Time [2021-11-07 09:50:09,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 343 Invalid, 228 Unknown, 0 Unchecked, 1.46ms Time], IncrementalHoareTripleChecker [28 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 138.21ms Time] [2021-11-07 09:50:09,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-07 09:50:09,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-11-07 09:50:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 250 states have (on average 1.088) internal successors, (272), 251 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:50:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 272 transitions. [2021-11-07 09:50:09,140 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 272 transitions. Word has length 96 [2021-11-07 09:50:09,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:50:09,140 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 272 transitions. [2021-11-07 09:50:09,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:50:09,140 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 272 transitions. [2021-11-07 09:50:09,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 09:50:09,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:50:09,141 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:50:09,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-07 09:50:09,141 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 09:50:09,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:50:09,142 INFO L85 PathProgramCache]: Analyzing trace with hash -446690621, now seen corresponding path program 1 times [2021-11-07 09:50:09,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:50:09,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351213497] [2021-11-07 09:50:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:50:09,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:50:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:50:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 09:50:10,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:50:10,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351213497] [2021-11-07 09:50:10,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351213497] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:50:10,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426146465] [2021-11-07 09:50:10,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:50:10,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:50:10,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:50:10,025 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 09:50:10,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 09:50:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:50:10,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 165 conjunts are in the unsatisfiable core [2021-11-07 09:50:10,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:50:10,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:50:10,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-07 09:50:10,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:50:10,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 09:50:10,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-07 09:50:10,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:50:10,459 INFO L354 Elim1Store]: treesize reduction 192, result has 14.3 percent of original size [2021-11-07 09:50:10,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 169 treesize of output 117 [2021-11-07 09:50:10,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:50:10,486 INFO L354 Elim1Store]: treesize reduction 164, result has 16.3 percent of original size [2021-11-07 09:50:10,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 140 treesize of output 101 [2021-11-07 09:50:14,680 INFO L354 Elim1Store]: treesize reduction 142, result has 2.1 percent of original size [2021-11-07 09:50:14,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 260 treesize of output 136 [2021-11-07 09:50:14,694 INFO L354 Elim1Store]: treesize reduction 94, result has 3.1 percent of original size [2021-11-07 09:50:14,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 97 treesize of output 47 [2021-11-07 09:50:14,777 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 09:50:14,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 09:50:25,095 WARN L227 SmtUtils]: Spent 8.61s on a formula simplification. DAG size of input: 663 DAG size of output: 323 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-07 09:50:25,096 INFO L354 Elim1Store]: treesize reduction 23607, result has 25.0 percent of original size [2021-11-07 09:50:25,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 1 disjoint index pairs (out of 91 index pairs), introduced 21 new quantified variables, introduced 108 case distinctions, treesize of input 50743381 treesize of output 47059832 [2021-11-07 09:54:13,922 WARN L227 SmtUtils]: Spent 3.81m on a formula simplification. DAG size of input: 2198 DAG size of output: 2170 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-07 09:54:23,449 WARN L227 SmtUtils]: Spent 9.51s on a formula simplification that was a NOOP. DAG size: 2115 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15