./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_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_byte_buf_write_from_whole_buffer_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 7a14ff88669e01083ca46db0c80d319fe5a2f969bf71d428fc27ed5e7149831c --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 08:59:15,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:59:15,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:59:15,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:59:15,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:59:15,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:59:15,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:59:15,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:59:15,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:59:15,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:59:15,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:59:15,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:59:15,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:59:15,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:59:15,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:59:15,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:59:15,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:59:15,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:59:15,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:59:15,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:59:15,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:59:15,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:59:15,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:59:15,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:59:15,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:59:15,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:59:15,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:59:15,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:59:15,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:59:15,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:59:15,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:59:15,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:59:15,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:59:15,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:59:15,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:59:15,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:59:15,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:59:15,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:59:15,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:59:15,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:59:15,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:59:15,166 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 08:59:15,186 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:59:15,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:59:15,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:59:15,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:59:15,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:59:15,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:59:15,193 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:59:15,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:59:15,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:59:15,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:59:15,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:59:15,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:59:15,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:59:15,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:59:15,195 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:59:15,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:59:15,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:59:15,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:59:15,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:59:15,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:59:15,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:59:15,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:59:15,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:59:15,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:59:15,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:59:15,197 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:59:15,197 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:59:15,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:59:15,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:59:15,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a14ff88669e01083ca46db0c80d319fe5a2f969bf71d428fc27ed5e7149831c [2021-11-07 08:59:15,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:59:15,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:59:15,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:59:15,375 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:59:15,375 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:59:15,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i [2021-11-07 08:59:15,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603dad8b7/815b9871447b437ab87595fe0ccd0e28/FLAG0ed0589b2 [2021-11-07 08:59:15,965 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:59:15,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i [2021-11-07 08:59:15,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603dad8b7/815b9871447b437ab87595fe0ccd0e28/FLAG0ed0589b2 [2021-11-07 08:59:16,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603dad8b7/815b9871447b437ab87595fe0ccd0e28 [2021-11-07 08:59:16,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:59:16,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:59:16,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:59:16,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:59:16,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:59:16,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:59:16" (1/1) ... [2021-11-07 08:59:16,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e077aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:16, skipping insertion in model container [2021-11-07 08:59:16,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:59:16" (1/1) ... [2021-11-07 08:59:16,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:59:16,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:59:16,645 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4510,4523] [2021-11-07 08:59:16,651 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4570,4583] [2021-11-07 08:59:16,665 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 08:59:16,673 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 08:59:17,165 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,169 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,170 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,171 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,172 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,179 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,184 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,187 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,188 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,371 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 08:59:17,372 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 08:59:17,373 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 08:59:17,373 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 08:59:17,374 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 08:59:17,375 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 08:59:17,375 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 08:59:17,375 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 08:59:17,376 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 08:59:17,376 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 08:59:17,464 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 08:59:17,528 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,528 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:59:17,599 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:59:17,618 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4510,4523] [2021-11-07 08:59:17,619 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4570,4583] [2021-11-07 08:59:17,620 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 08:59:17,621 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 08:59:17,698 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,701 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,702 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,702 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,704 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,711 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,715 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,732 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,742 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,780 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 08:59:17,781 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 08:59:17,781 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 08:59:17,782 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 08:59:17,783 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 08:59:17,783 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 08:59:17,783 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 08:59:17,784 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 08:59:17,784 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 08:59:17,784 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 08:59:17,801 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 08:59:17,857 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,857 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:59:17,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:59:18,033 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:59:18,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:18 WrapperNode [2021-11-07 08:59:18,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:59:18,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:59:18,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:59:18,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:59:18,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:18" (1/1) ... [2021-11-07 08:59:18,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:18" (1/1) ... [2021-11-07 08:59:18,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:59:18,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:59:18,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:59:18,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:59:18,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:18" (1/1) ... [2021-11-07 08:59:18,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:18" (1/1) ... [2021-11-07 08:59:18,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:18" (1/1) ... [2021-11-07 08:59:18,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:18" (1/1) ... [2021-11-07 08:59:18,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:18" (1/1) ... [2021-11-07 08:59:18,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:18" (1/1) ... [2021-11-07 08:59:18,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:18" (1/1) ... [2021-11-07 08:59:18,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:59:18,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:59:18,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:59:18,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:59:18,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:18" (1/1) ... [2021-11-07 08:59:18,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:59:18,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 08:59:18,365 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 08:59:18,395 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 08:59:18,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:59:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:59:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:59:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:59:18,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:59:18,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:59:18,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:59:18,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:59:18,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 08:59:18,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:59:18,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:59:26,344 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:59:26,347 INFO L299 CfgBuilder]: Removed 143 assume(true) statements. [2021-11-07 08:59:26,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:59:26 BoogieIcfgContainer [2021-11-07 08:59:26,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:59:26,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:59:26,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:59:26,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:59:26,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:59:16" (1/3) ... [2021-11-07 08:59:26,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571276c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:59:26, skipping insertion in model container [2021-11-07 08:59:26,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:18" (2/3) ... [2021-11-07 08:59:26,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571276c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:59:26, skipping insertion in model container [2021-11-07 08:59:26,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:59:26" (3/3) ... [2021-11-07 08:59:26,357 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness.i [2021-11-07 08:59:26,362 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:59:26,363 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-07 08:59:26,405 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:59:26,414 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 08:59:26,415 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-07 08:59:26,440 INFO L276 IsEmpty]: Start isEmpty. Operand has 293 states, 273 states have (on average 1.4945054945054945) internal successors, (408), 292 states have internal predecessors, (408), 0 states have call successors, (0), 0 states 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 08:59:26,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 08:59:26,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:26,448 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] [2021-11-07 08:59:26,448 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:26,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:26,452 INFO L85 PathProgramCache]: Analyzing trace with hash -389295303, now seen corresponding path program 1 times [2021-11-07 08:59:26,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:26,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64875848] [2021-11-07 08:59:26,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:26,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:26,956 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 08:59:26,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:26,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64875848] [2021-11-07 08:59:26,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64875848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:26,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:26,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:59:26,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959561449] [2021-11-07 08:59:26,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:26,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:59:26,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:26,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:59:26,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:59:26,986 INFO L87 Difference]: Start difference. First operand has 293 states, 273 states have (on average 1.4945054945054945) internal successors, (408), 292 states have internal predecessors, (408), 0 states have call successors, (0), 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 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 08:59:27,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:27,025 INFO L93 Difference]: Finished difference Result 582 states and 811 transitions. [2021-11-07 08:59:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:59:27,027 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-11-07 08:59:27,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:27,039 INFO L225 Difference]: With dead ends: 582 [2021-11-07 08:59:27,039 INFO L226 Difference]: Without dead ends: 286 [2021-11-07 08:59:27,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:59:27,048 INFO L933 BasicCegarLoop]: 372 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, 372 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.16ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:27,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 4.16ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 08:59:27,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-07 08:59:27,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2021-11-07 08:59:27,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 267 states have (on average 1.3558052434456929) internal successors, (362), 285 states have internal predecessors, (362), 0 states have call successors, (0), 0 states 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 08:59:27,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 362 transitions. [2021-11-07 08:59:27,097 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 362 transitions. Word has length 60 [2021-11-07 08:59:27,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:27,098 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 362 transitions. [2021-11-07 08:59:27,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 08:59:27,100 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 362 transitions. [2021-11-07 08:59:27,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 08:59:27,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:27,103 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] [2021-11-07 08:59:27,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:59:27,103 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:27,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:27,104 INFO L85 PathProgramCache]: Analyzing trace with hash 20483131, now seen corresponding path program 1 times [2021-11-07 08:59:27,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:27,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382356660] [2021-11-07 08:59:27,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:27,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:27,454 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 08:59:27,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:27,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382356660] [2021-11-07 08:59:27,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382356660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:27,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:27,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:59:27,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270117917] [2021-11-07 08:59:27,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:27,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:59:27,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:27,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:59:27,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:59:27,456 INFO L87 Difference]: Start difference. First operand 286 states and 362 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 08:59:27,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:27,676 INFO L93 Difference]: Finished difference Result 546 states and 690 transitions. [2021-11-07 08:59:27,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:59:27,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-11-07 08:59:27,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:27,678 INFO L225 Difference]: With dead ends: 546 [2021-11-07 08:59:27,678 INFO L226 Difference]: Without dead ends: 286 [2021-11-07 08:59:27,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.26ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:59:27,679 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 504 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 175.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.21ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 193.21ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:27,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 500 Invalid, 63 Unknown, 0 Unchecked, 5.21ms Time], IncrementalHoareTripleChecker [10 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 193.21ms Time] [2021-11-07 08:59:27,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-07 08:59:27,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2021-11-07 08:59:27,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 267 states have (on average 1.344569288389513) internal successors, (359), 285 states have internal predecessors, (359), 0 states have call successors, (0), 0 states 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 08:59:27,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 359 transitions. [2021-11-07 08:59:27,686 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 359 transitions. Word has length 60 [2021-11-07 08:59:27,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:27,686 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 359 transitions. [2021-11-07 08:59:27,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 08:59:27,687 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 359 transitions. [2021-11-07 08:59:27,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 08:59:27,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:27,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:27,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:59:27,688 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:27,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:27,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1562718067, now seen corresponding path program 1 times [2021-11-07 08:59:27,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:27,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803800973] [2021-11-07 08:59:27,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:27,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:27,949 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 08:59:27,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:27,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803800973] [2021-11-07 08:59:27,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803800973] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:27,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:27,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:59:27,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860017745] [2021-11-07 08:59:27,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:27,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:59:27,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:27,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:59:27,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:59:27,951 INFO L87 Difference]: Start difference. First operand 286 states and 359 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 08:59:28,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:28,405 INFO L93 Difference]: Finished difference Result 637 states and 812 transitions. [2021-11-07 08:59:28,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:59:28,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 72 [2021-11-07 08:59:28,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:28,406 INFO L225 Difference]: With dead ends: 637 [2021-11-07 08:59:28,406 INFO L226 Difference]: Without dead ends: 376 [2021-11-07 08:59:28,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.55ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:59:28,407 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 207 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 379.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.85ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 416.09ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:28,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 954 Invalid, 183 Unknown, 0 Unchecked, 2.85ms Time], IncrementalHoareTripleChecker [33 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 416.09ms Time] [2021-11-07 08:59:28,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-07 08:59:28,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 304. [2021-11-07 08:59:28,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 285 states have (on average 1.3228070175438595) internal successors, (377), 303 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:28,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 377 transitions. [2021-11-07 08:59:28,416 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 377 transitions. Word has length 72 [2021-11-07 08:59:28,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:28,416 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 377 transitions. [2021-11-07 08:59:28,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 08:59:28,417 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 377 transitions. [2021-11-07 08:59:28,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 08:59:28,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:28,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:28,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:59:28,421 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:28,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:28,422 INFO L85 PathProgramCache]: Analyzing trace with hash 301800817, now seen corresponding path program 1 times [2021-11-07 08:59:28,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:28,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231073967] [2021-11-07 08:59:28,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:28,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:28,609 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 08:59:28,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:28,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231073967] [2021-11-07 08:59:28,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231073967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:28,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:28,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:59:28,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264094578] [2021-11-07 08:59:28,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:28,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:59:28,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:28,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:59:28,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:59:28,611 INFO L87 Difference]: Start difference. First operand 304 states and 377 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 08:59:28,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:28,788 INFO L93 Difference]: Finished difference Result 550 states and 681 transitions. [2021-11-07 08:59:28,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:59:28,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 72 [2021-11-07 08:59:28,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:28,789 INFO L225 Difference]: With dead ends: 550 [2021-11-07 08:59:28,789 INFO L226 Difference]: Without dead ends: 304 [2021-11-07 08:59:28,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.07ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:59:28,790 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 480 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 133.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.85ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 147.46ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:28,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 503 Invalid, 57 Unknown, 0 Unchecked, 1.85ms Time], IncrementalHoareTripleChecker [9 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 147.46ms Time] [2021-11-07 08:59:28,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-07 08:59:28,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-11-07 08:59:28,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 285 states have (on average 1.3157894736842106) internal successors, (375), 303 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:28,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 375 transitions. [2021-11-07 08:59:28,795 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 375 transitions. Word has length 72 [2021-11-07 08:59:28,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:28,795 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 375 transitions. [2021-11-07 08:59:28,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 08:59:28,795 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 375 transitions. [2021-11-07 08:59:28,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 08:59:28,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:28,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:28,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:59:28,796 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:28,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:28,797 INFO L85 PathProgramCache]: Analyzing trace with hash 193243142, now seen corresponding path program 1 times [2021-11-07 08:59:28,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:28,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592128133] [2021-11-07 08:59:28,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:28,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:28,988 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 08:59:28,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:28,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592128133] [2021-11-07 08:59:28,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592128133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:28,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:28,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:59:28,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383682689] [2021-11-07 08:59:28,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:28,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:59:28,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:28,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:59:28,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:59:28,989 INFO L87 Difference]: Start difference. First operand 304 states and 375 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 08:59:29,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:29,141 INFO L93 Difference]: Finished difference Result 502 states and 615 transitions. [2021-11-07 08:59:29,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:59:29,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-07 08:59:29,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:29,143 INFO L225 Difference]: With dead ends: 502 [2021-11-07 08:59:29,143 INFO L226 Difference]: Without dead ends: 304 [2021-11-07 08:59:29,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.08ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:59:29,144 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 284 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.85ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.55ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:29,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 729 Invalid, 43 Unknown, 0 Unchecked, 1.85ms Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 122.55ms Time] [2021-11-07 08:59:29,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-07 08:59:29,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-11-07 08:59:29,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 285 states have (on average 1.312280701754386) internal successors, (374), 303 states have internal predecessors, (374), 0 states have call successors, (0), 0 states 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 08:59:29,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 374 transitions. [2021-11-07 08:59:29,150 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 374 transitions. Word has length 78 [2021-11-07 08:59:29,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:29,152 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 374 transitions. [2021-11-07 08:59:29,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 08:59:29,152 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 374 transitions. [2021-11-07 08:59:29,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 08:59:29,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:29,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:29,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 08:59:29,153 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:29,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:29,154 INFO L85 PathProgramCache]: Analyzing trace with hash 450269211, now seen corresponding path program 1 times [2021-11-07 08:59:29,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:29,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822050100] [2021-11-07 08:59:29,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:29,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:29,467 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 08:59:29,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:29,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822050100] [2021-11-07 08:59:29,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822050100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:29,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:29,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:59:29,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687561865] [2021-11-07 08:59:29,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:29,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:59:29,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:29,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:59:29,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:59:29,468 INFO L87 Difference]: Start difference. First operand 304 states and 374 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:29,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:29,722 INFO L93 Difference]: Finished difference Result 483 states and 588 transitions. [2021-11-07 08:59:29,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:59:29,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-07 08:59:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:29,724 INFO L225 Difference]: With dead ends: 483 [2021-11-07 08:59:29,724 INFO L226 Difference]: Without dead ends: 304 [2021-11-07 08:59:29,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 169.25ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:59:29,725 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 1102 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 139.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.77ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 150.41ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:29,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 577 Invalid, 64 Unknown, 0 Unchecked, 2.77ms Time], IncrementalHoareTripleChecker [11 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 150.41ms Time] [2021-11-07 08:59:29,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-07 08:59:29,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-11-07 08:59:29,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 285 states have (on average 1.3087719298245615) internal successors, (373), 303 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 08:59:29,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 373 transitions. [2021-11-07 08:59:29,730 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 373 transitions. Word has length 84 [2021-11-07 08:59:29,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:29,730 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 373 transitions. [2021-11-07 08:59:29,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:29,731 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 373 transitions. [2021-11-07 08:59:29,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 08:59:29,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:29,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:29,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 08:59:29,732 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:29,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:29,732 INFO L85 PathProgramCache]: Analyzing trace with hash 212824488, now seen corresponding path program 1 times [2021-11-07 08:59:29,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:29,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841224748] [2021-11-07 08:59:29,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:29,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:59:29,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:29,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841224748] [2021-11-07 08:59:29,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841224748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:29,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:29,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:59:29,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514379230] [2021-11-07 08:59:29,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:29,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:59:29,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:29,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:59:29,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:59:29,900 INFO L87 Difference]: Start difference. First operand 304 states and 373 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 08:59:30,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:30,432 INFO L93 Difference]: Finished difference Result 769 states and 967 transitions. [2021-11-07 08:59:30,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:59:30,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-11-07 08:59:30,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:30,434 INFO L225 Difference]: With dead ends: 769 [2021-11-07 08:59:30,434 INFO L226 Difference]: Without dead ends: 484 [2021-11-07 08:59:30,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.14ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:59:30,435 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 247 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 455.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.46ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 491.68ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:30,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 1181 Invalid, 201 Unknown, 0 Unchecked, 4.46ms Time], IncrementalHoareTripleChecker [33 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 491.68ms Time] [2021-11-07 08:59:30,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-11-07 08:59:30,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 322. [2021-11-07 08:59:30,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 303 states have (on average 1.2904290429042904) internal successors, (391), 321 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:30,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 391 transitions. [2021-11-07 08:59:30,440 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 391 transitions. Word has length 90 [2021-11-07 08:59:30,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:30,440 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 391 transitions. [2021-11-07 08:59:30,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 08:59:30,440 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 391 transitions. [2021-11-07 08:59:30,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 08:59:30,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:30,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:30,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 08:59:30,442 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:30,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:30,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1901768230, now seen corresponding path program 1 times [2021-11-07 08:59:30,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:30,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374258335] [2021-11-07 08:59:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:30,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:30,774 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 08:59:30,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:30,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374258335] [2021-11-07 08:59:30,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374258335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:30,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:30,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:59:30,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008388324] [2021-11-07 08:59:30,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:30,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:59:30,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:30,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:59:30,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:59:30,776 INFO L87 Difference]: Start difference. First operand 322 states and 391 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 08:59:31,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:31,219 INFO L93 Difference]: Finished difference Result 456 states and 543 transitions. [2021-11-07 08:59:31,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:59:31,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-11-07 08:59:31,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:31,220 INFO L225 Difference]: With dead ends: 456 [2021-11-07 08:59:31,220 INFO L226 Difference]: Without dead ends: 322 [2021-11-07 08:59:31,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 322.15ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-07 08:59:31,221 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 1615 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 210.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.39ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 225.90ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:31,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1615 Valid, 687 Invalid, 85 Unknown, 0 Unchecked, 4.39ms Time], IncrementalHoareTripleChecker [20 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 225.90ms Time] [2021-11-07 08:59:31,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-07 08:59:31,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2021-11-07 08:59:31,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 303 states have (on average 1.283828382838284) internal successors, (389), 321 states have internal predecessors, (389), 0 states have call successors, (0), 0 states 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 08:59:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 389 transitions. [2021-11-07 08:59:31,226 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 389 transitions. Word has length 90 [2021-11-07 08:59:31,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:31,226 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 389 transitions. [2021-11-07 08:59:31,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 08:59:31,226 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 389 transitions. [2021-11-07 08:59:31,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 08:59:31,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:31,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:31,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 08:59:31,227 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:31,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:31,228 INFO L85 PathProgramCache]: Analyzing trace with hash -369000709, now seen corresponding path program 1 times [2021-11-07 08:59:31,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:31,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347079219] [2021-11-07 08:59:31,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:31,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:31,733 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 08:59:31,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:31,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347079219] [2021-11-07 08:59:31,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347079219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:31,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:31,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:59:31,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925863876] [2021-11-07 08:59:31,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:31,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:59:31,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:31,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:59:31,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:59:31,734 INFO L87 Difference]: Start difference. First operand 322 states and 389 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 08:59:32,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:32,619 INFO L93 Difference]: Finished difference Result 532 states and 623 transitions. [2021-11-07 08:59:32,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 08:59:32,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 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 08:59:32,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:32,621 INFO L225 Difference]: With dead ends: 532 [2021-11-07 08:59:32,621 INFO L226 Difference]: Without dead ends: 524 [2021-11-07 08:59:32,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 220.70ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:59:32,622 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 383 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 671.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.50ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 727.41ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:32,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 1342 Invalid, 319 Unknown, 0 Unchecked, 6.50ms Time], IncrementalHoareTripleChecker [66 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 727.41ms Time] [2021-11-07 08:59:32,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-11-07 08:59:32,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 338. [2021-11-07 08:59:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 319 states have (on average 1.2695924764890283) internal successors, (405), 337 states have internal predecessors, (405), 0 states have call successors, (0), 0 states 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 08:59:32,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 405 transitions. [2021-11-07 08:59:32,630 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 405 transitions. Word has length 96 [2021-11-07 08:59:32,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:32,630 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 405 transitions. [2021-11-07 08:59:32,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 08:59:32,630 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 405 transitions. [2021-11-07 08:59:32,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 08:59:32,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:32,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:32,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 08:59:32,631 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:32,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:32,632 INFO L85 PathProgramCache]: Analyzing trace with hash 544006001, now seen corresponding path program 1 times [2021-11-07 08:59:32,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:32,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884193149] [2021-11-07 08:59:32,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:32,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:59:33,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:33,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884193149] [2021-11-07 08:59:33,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884193149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:33,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:33,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:59:33,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172823213] [2021-11-07 08:59:33,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:33,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:59:33,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:33,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:59:33,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:59:33,321 INFO L87 Difference]: Start difference. First operand 338 states and 405 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 08:59:35,373 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:36,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:36,788 INFO L93 Difference]: Finished difference Result 953 states and 1139 transitions. [2021-11-07 08:59:36,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:59:36,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2021-11-07 08:59:36,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:36,790 INFO L225 Difference]: With dead ends: 953 [2021-11-07 08:59:36,790 INFO L226 Difference]: Without dead ends: 639 [2021-11-07 08:59:36,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 102.44ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:59:36,791 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 838 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3128.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.46ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3345.71ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:36,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [838 Valid, 762 Invalid, 435 Unknown, 0 Unchecked, 7.46ms Time], IncrementalHoareTripleChecker [50 Valid, 384 Invalid, 1 Unknown, 0 Unchecked, 3345.71ms Time] [2021-11-07 08:59:36,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-11-07 08:59:36,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 365. [2021-11-07 08:59:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 346 states have (on average 1.2485549132947977) internal successors, (432), 364 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 08:59:36,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 432 transitions. [2021-11-07 08:59:36,799 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 432 transitions. Word has length 100 [2021-11-07 08:59:36,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:36,799 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 432 transitions. [2021-11-07 08:59:36,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 08:59:36,800 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 432 transitions. [2021-11-07 08:59:36,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 08:59:36,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:36,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:36,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 08:59:36,801 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:59:36,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:36,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1224064371, now seen corresponding path program 1 times [2021-11-07 08:59:36,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:36,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527902409] [2021-11-07 08:59:36,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:36,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:38,575 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 08:59:38,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:38,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527902409] [2021-11-07 08:59:38,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527902409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:38,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:38,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 08:59:38,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487627075] [2021-11-07 08:59:38,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:38,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 08:59:38,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:38,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 08:59:38,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:59:38,577 INFO L87 Difference]: Start difference. First operand 365 states and 432 transitions. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 08:59:40,633 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:42,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:44,891 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:47,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:49,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:51,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:53,320 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:03,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:03,331 INFO L93 Difference]: Finished difference Result 1194 states and 1401 transitions. [2021-11-07 09:00:03,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 09:00:03,332 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2021-11-07 09:00:03,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:03,335 INFO L225 Difference]: With dead ends: 1194 [2021-11-07 09:00:03,336 INFO L226 Difference]: Without dead ends: 986 [2021-11-07 09:00:03,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 4186.88ms TimeCoverageRelationStatistics Valid=224, Invalid=768, Unknown=0, NotChecked=0, Total=992 [2021-11-07 09:00:03,337 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 1367 mSDsluCounter, 4275 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 61 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19932.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 4875 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.45ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21138.41ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:03,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1367 Valid, 4875 Invalid, 2060 Unknown, 0 Unchecked, 26.45ms Time], IncrementalHoareTripleChecker [61 Valid, 1992 Invalid, 7 Unknown, 0 Unchecked, 21138.41ms Time] [2021-11-07 09:00:03,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2021-11-07 09:00:03,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 435. [2021-11-07 09:00:03,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 416 states have (on average 1.2475961538461537) internal successors, (519), 434 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:03,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 519 transitions. [2021-11-07 09:00:03,362 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 519 transitions. Word has length 100 [2021-11-07 09:00:03,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:03,362 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 519 transitions. [2021-11-07 09:00:03,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 09:00:03,363 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 519 transitions. [2021-11-07 09:00:03,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 09:00:03,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:03,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:00:03,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 09:00:03,364 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:00:03,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:03,364 INFO L85 PathProgramCache]: Analyzing trace with hash -413009691, now seen corresponding path program 1 times [2021-11-07 09:00:03,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:03,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298454632] [2021-11-07 09:00:03,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:03,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:05,177 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 09:00:05,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:05,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298454632] [2021-11-07 09:00:05,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298454632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:05,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:05,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 09:00:05,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929107363] [2021-11-07 09:00:05,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:05,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 09:00:05,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:05,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 09:00:05,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:00:05,179 INFO L87 Difference]: Start difference. First operand 435 states and 519 transitions. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 09:00:07,225 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:09,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:11,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:13,582 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:15,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:17,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:19,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:22,010 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:24,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:27,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:27,189 INFO L93 Difference]: Finished difference Result 1019 states and 1193 transitions. [2021-11-07 09:00:27,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 09:00:27,190 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-11-07 09:00:27,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:27,192 INFO L225 Difference]: With dead ends: 1019 [2021-11-07 09:00:27,192 INFO L226 Difference]: Without dead ends: 771 [2021-11-07 09:00:27,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1093.01ms TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2021-11-07 09:00:27,193 INFO L933 BasicCegarLoop]: 468 mSDtfsCounter, 1648 mSDsluCounter, 2312 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 46 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20332.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.79ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21444.69ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:27,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1648 Valid, 2780 Invalid, 893 Unknown, 0 Unchecked, 10.79ms Time], IncrementalHoareTripleChecker [46 Valid, 838 Invalid, 9 Unknown, 0 Unchecked, 21444.69ms Time] [2021-11-07 09:00:27,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-11-07 09:00:27,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 433. [2021-11-07 09:00:27,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 414 states have (on average 1.2439613526570048) internal successors, (515), 432 states have internal predecessors, (515), 0 states have call successors, (0), 0 states 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 09:00:27,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 515 transitions. [2021-11-07 09:00:27,214 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 515 transitions. Word has length 103 [2021-11-07 09:00:27,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:27,215 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 515 transitions. [2021-11-07 09:00:27,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 09:00:27,215 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 515 transitions. [2021-11-07 09:00:27,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 09:00:27,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:27,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:00:27,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 09:00:27,217 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:00:27,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:27,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1402762431, now seen corresponding path program 1 times [2021-11-07 09:00:27,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:27,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082043378] [2021-11-07 09:00:27,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:27,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:28,183 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 09:00:28,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:28,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082043378] [2021-11-07 09:00:28,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082043378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:28,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:28,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 09:00:28,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921117329] [2021-11-07 09:00:28,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:28,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 09:00:28,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:28,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 09:00:28,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:00:28,184 INFO L87 Difference]: Start difference. First operand 433 states and 515 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 09:00:30,228 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:32,402 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:34,503 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:36,591 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:42,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:42,189 INFO L93 Difference]: Finished difference Result 1396 states and 1655 transitions. [2021-11-07 09:00:42,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-07 09:00:42,190 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-11-07 09:00:42,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:42,193 INFO L225 Difference]: With dead ends: 1396 [2021-11-07 09:00:42,193 INFO L226 Difference]: Without dead ends: 1179 [2021-11-07 09:00:42,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1917.56ms TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702 [2021-11-07 09:00:42,194 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1813 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 83 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11564.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 2724 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.64ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12255.31ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:42,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1813 Valid, 2724 Invalid, 1381 Unknown, 0 Unchecked, 14.64ms Time], IncrementalHoareTripleChecker [83 Valid, 1294 Invalid, 4 Unknown, 0 Unchecked, 12255.31ms Time] [2021-11-07 09:00:42,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2021-11-07 09:00:42,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 544. [2021-11-07 09:00:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 525 states have (on average 1.2419047619047618) internal successors, (652), 543 states have internal predecessors, (652), 0 states have call successors, (0), 0 states 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 09:00:42,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 652 transitions. [2021-11-07 09:00:42,222 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 652 transitions. Word has length 104 [2021-11-07 09:00:42,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:42,223 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 652 transitions. [2021-11-07 09:00:42,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 09:00:42,223 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 652 transitions. [2021-11-07 09:00:42,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 09:00:42,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:42,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:00:42,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 09:00:42,225 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:00:42,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:42,225 INFO L85 PathProgramCache]: Analyzing trace with hash 893289341, now seen corresponding path program 1 times [2021-11-07 09:00:42,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:42,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445350377] [2021-11-07 09:00:42,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:42,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:42,971 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 09:00:42,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:42,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445350377] [2021-11-07 09:00:42,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445350377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:42,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:42,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:00:42,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746861100] [2021-11-07 09:00:42,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:42,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:00:42,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:42,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:00:42,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:00:42,973 INFO L87 Difference]: Start difference. First operand 544 states and 652 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 09:00:45,015 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:46,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:46,397 INFO L93 Difference]: Finished difference Result 1314 states and 1566 transitions. [2021-11-07 09:00:46,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:00:46,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-11-07 09:00:46,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:46,400 INFO L225 Difference]: With dead ends: 1314 [2021-11-07 09:00:46,400 INFO L226 Difference]: Without dead ends: 797 [2021-11-07 09:00:46,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 72.58ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:00:46,401 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 518 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3128.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.33ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3346.69ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:46,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [518 Valid, 1218 Invalid, 392 Unknown, 0 Unchecked, 5.33ms Time], IncrementalHoareTripleChecker [50 Valid, 341 Invalid, 1 Unknown, 0 Unchecked, 3346.69ms Time] [2021-11-07 09:00:46,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-11-07 09:00:46,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 544. [2021-11-07 09:00:46,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 525 states have (on average 1.2133333333333334) internal successors, (637), 543 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:46,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 637 transitions. [2021-11-07 09:00:46,416 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 637 transitions. Word has length 104 [2021-11-07 09:00:46,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:46,416 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 637 transitions. [2021-11-07 09:00:46,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 09:00:46,417 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 637 transitions. [2021-11-07 09:00:46,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 09:00:46,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:46,418 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:00:46,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 09:00:46,418 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:00:46,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:46,418 INFO L85 PathProgramCache]: Analyzing trace with hash 965675899, now seen corresponding path program 1 times [2021-11-07 09:00:46,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:46,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501322831] [2021-11-07 09:00:46,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:46,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:47,304 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 09:00:47,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:47,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501322831] [2021-11-07 09:00:47,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501322831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:47,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:47,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 09:00:47,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247097514] [2021-11-07 09:00:47,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:47,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:00:47,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:47,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:00:47,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:00:47,305 INFO L87 Difference]: Start difference. First operand 544 states and 637 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 09:00:48,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:48,540 INFO L93 Difference]: Finished difference Result 1225 states and 1411 transitions. [2021-11-07 09:00:48,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 09:00:48,559 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-11-07 09:00:48,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:48,561 INFO L225 Difference]: With dead ends: 1225 [2021-11-07 09:00:48,561 INFO L226 Difference]: Without dead ends: 652 [2021-11-07 09:00:48,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 280.75ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 09:00:48,562 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 195 mSDsluCounter, 1797 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 991.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.43ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1069.19ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:48,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 2231 Invalid, 419 Unknown, 0 Unchecked, 4.43ms Time], IncrementalHoareTripleChecker [58 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 1069.19ms Time] [2021-11-07 09:00:48,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-11-07 09:00:48,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 542. [2021-11-07 09:00:48,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 523 states have (on average 1.1892925430210326) internal successors, (622), 541 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:48,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 622 transitions. [2021-11-07 09:00:48,594 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 622 transitions. Word has length 104 [2021-11-07 09:00:48,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:48,594 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 622 transitions. [2021-11-07 09:00:48,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 09:00:48,595 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 622 transitions. [2021-11-07 09:00:48,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 09:00:48,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:48,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:00:48,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 09:00:48,596 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:00:48,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:48,597 INFO L85 PathProgramCache]: Analyzing trace with hash -666063228, now seen corresponding path program 1 times [2021-11-07 09:00:48,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:48,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439044114] [2021-11-07 09:00:48,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:48,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:50,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:50,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:50,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439044114] [2021-11-07 09:00:50,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439044114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:50,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:50,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 09:00:50,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320210519] [2021-11-07 09:00:50,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:50,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 09:00:50,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:50,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 09:00:50,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:00:50,332 INFO L87 Difference]: Start difference. First operand 542 states and 622 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 09:00:52,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:54,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:56,577 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:58,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:00,768 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:09,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:09,040 INFO L93 Difference]: Finished difference Result 1423 states and 1607 transitions. [2021-11-07 09:01:09,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 09:01:09,041 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-07 09:01:09,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:09,044 INFO L225 Difference]: With dead ends: 1423 [2021-11-07 09:01:09,044 INFO L226 Difference]: Without dead ends: 1205 [2021-11-07 09:01:09,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2585.61ms TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2021-11-07 09:01:09,045 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 1258 mSDsluCounter, 4187 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 54 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15717.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 4798 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.02ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16690.52ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:09,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1258 Valid, 4798 Invalid, 1967 Unknown, 0 Unchecked, 23.02ms Time], IncrementalHoareTripleChecker [54 Valid, 1908 Invalid, 5 Unknown, 0 Unchecked, 16690.52ms Time] [2021-11-07 09:01:09,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2021-11-07 09:01:09,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 564. [2021-11-07 09:01:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 545 states have (on average 1.1853211009174311) internal successors, (646), 563 states have internal predecessors, (646), 0 states have call successors, (0), 0 states 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 09:01:09,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 646 transitions. [2021-11-07 09:01:09,059 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 646 transitions. Word has length 106 [2021-11-07 09:01:09,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:09,059 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 646 transitions. [2021-11-07 09:01:09,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 09:01:09,060 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 646 transitions. [2021-11-07 09:01:09,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 09:01:09,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:09,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:01:09,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 09:01:09,061 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:01:09,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:09,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1257164806, now seen corresponding path program 1 times [2021-11-07 09:01:09,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:09,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479442671] [2021-11-07 09:01:09,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:09,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:01:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:01:11,185 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 09:01:11,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:01:11,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479442671] [2021-11-07 09:01:11,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479442671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:01:11,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:01:11,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 09:01:11,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341740369] [2021-11-07 09:01:11,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:01:11,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 09:01:11,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:01:11,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 09:01:11,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:01:11,186 INFO L87 Difference]: Start difference. First operand 564 states and 646 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 09:01:13,235 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:15,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:17,442 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:19,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:21,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:23,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:25,931 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:28,037 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:30,154 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:37,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:37,005 INFO L93 Difference]: Finished difference Result 993 states and 1131 transitions. [2021-11-07 09:01:37,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 09:01:37,006 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-07 09:01:37,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:37,008 INFO L225 Difference]: With dead ends: 993 [2021-11-07 09:01:37,008 INFO L226 Difference]: Without dead ends: 783 [2021-11-07 09:01:37,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2995.68ms TimeCoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-11-07 09:01:37,009 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 898 mSDsluCounter, 3293 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 35 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22391.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 3719 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.09ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23654.65ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:37,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [898 Valid, 3719 Invalid, 1588 Unknown, 0 Unchecked, 16.09ms Time], IncrementalHoareTripleChecker [35 Valid, 1544 Invalid, 9 Unknown, 0 Unchecked, 23654.65ms Time] [2021-11-07 09:01:37,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-11-07 09:01:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 560. [2021-11-07 09:01:37,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 541 states have (on average 1.1848428835489833) internal successors, (641), 559 states have internal predecessors, (641), 0 states have call successors, (0), 0 states 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 09:01:37,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 641 transitions. [2021-11-07 09:01:37,025 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 641 transitions. Word has length 106 [2021-11-07 09:01:37,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:37,025 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 641 transitions. [2021-11-07 09:01:37,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 09:01:37,025 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 641 transitions. [2021-11-07 09:01:37,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-07 09:01:37,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:37,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:01:37,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 09:01:37,027 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:01:37,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:37,027 INFO L85 PathProgramCache]: Analyzing trace with hash -805910600, now seen corresponding path program 1 times [2021-11-07 09:01:37,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:37,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184258703] [2021-11-07 09:01:37,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:37,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:01:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:01:37,310 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 09:01:37,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:01:37,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184258703] [2021-11-07 09:01:37,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184258703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:01:37,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:01:37,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:01:37,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932823606] [2021-11-07 09:01:37,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:01:37,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:01:37,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:01:37,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:01:37,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:01:37,312 INFO L87 Difference]: Start difference. First operand 560 states and 641 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 09:01:37,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:37,799 INFO L93 Difference]: Finished difference Result 1141 states and 1301 transitions. [2021-11-07 09:01:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:01:37,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-07 09:01:37,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:37,801 INFO L225 Difference]: With dead ends: 1141 [2021-11-07 09:01:37,801 INFO L226 Difference]: Without dead ends: 540 [2021-11-07 09:01:37,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.46ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:01:37,802 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 41 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 407.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.87ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 437.77ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:37,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 925 Invalid, 156 Unknown, 0 Unchecked, 1.87ms Time], IncrementalHoareTripleChecker [28 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 437.77ms Time] [2021-11-07 09:01:37,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-11-07 09:01:37,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 514. [2021-11-07 09:01:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 495 states have (on average 1.1555555555555554) internal successors, (572), 513 states have internal predecessors, (572), 0 states have call successors, (0), 0 states 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 09:01:37,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 572 transitions. [2021-11-07 09:01:37,815 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 572 transitions. Word has length 109 [2021-11-07 09:01:37,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:37,815 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 572 transitions. [2021-11-07 09:01:37,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 09:01:37,816 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 572 transitions. [2021-11-07 09:01:37,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-07 09:01:37,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:37,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:01:37,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 09:01:37,817 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:01:37,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:37,817 INFO L85 PathProgramCache]: Analyzing trace with hash 698715380, now seen corresponding path program 1 times [2021-11-07 09:01:37,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:37,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432273343] [2021-11-07 09:01:37,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:37,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:01:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:01:39,651 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 09:01:39,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:01:39,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432273343] [2021-11-07 09:01:39,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432273343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:01:39,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:01:39,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 09:01:39,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853791422] [2021-11-07 09:01:39,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:01:39,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 09:01:39,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:01:39,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 09:01:39,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:01:39,652 INFO L87 Difference]: Start difference. First operand 514 states and 572 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 09:01:41,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:43,801 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:45,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:48,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:50,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:52,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:56,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:56,458 INFO L93 Difference]: Finished difference Result 1203 states and 1337 transitions. [2021-11-07 09:01:56,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 09:01:56,458 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-07 09:01:56,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:56,460 INFO L225 Difference]: With dead ends: 1203 [2021-11-07 09:01:56,460 INFO L226 Difference]: Without dead ends: 865 [2021-11-07 09:01:56,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2056.56ms TimeCoverageRelationStatistics Valid=228, Invalid=474, Unknown=0, NotChecked=0, Total=702 [2021-11-07 09:01:56,462 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 1901 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 87 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14387.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 2494 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.58ms SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15123.63ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:56,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1901 Valid, 2494 Invalid, 961 Unknown, 0 Unchecked, 10.58ms Time], IncrementalHoareTripleChecker [87 Valid, 868 Invalid, 6 Unknown, 0 Unchecked, 15123.63ms Time] [2021-11-07 09:01:56,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-11-07 09:01:56,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 522. [2021-11-07 09:01:56,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 503 states have (on average 1.1550695825049702) internal successors, (581), 521 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 09:01:56,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 581 transitions. [2021-11-07 09:01:56,477 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 581 transitions. Word has length 109 [2021-11-07 09:01:56,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:56,477 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 581 transitions. [2021-11-07 09:01:56,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 09:01:56,478 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 581 transitions. [2021-11-07 09:01:56,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 09:01:56,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:56,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:01:56,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 09:01:56,491 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:01:56,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:56,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1685058258, now seen corresponding path program 1 times [2021-11-07 09:01:56,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:56,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207193398] [2021-11-07 09:01:56,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:56,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:01:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:01:59,025 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 09:01:59,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:01:59,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207193398] [2021-11-07 09:01:59,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207193398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:01:59,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:01:59,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 09:01:59,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880409838] [2021-11-07 09:01:59,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:01:59,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 09:01:59,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:01:59,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 09:01:59,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:01:59,026 INFO L87 Difference]: Start difference. First operand 522 states and 581 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 09:02:01,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:03,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:04,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:04,740 INFO L93 Difference]: Finished difference Result 1049 states and 1164 transitions. [2021-11-07 09:02:04,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 09:02:04,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-07 09:02:04,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:04,742 INFO L225 Difference]: With dead ends: 1049 [2021-11-07 09:02:04,742 INFO L226 Difference]: Without dead ends: 552 [2021-11-07 09:02:04,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 593.60ms TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-11-07 09:02:04,743 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 594 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 22 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4993.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.60ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5311.96ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:04,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 1601 Invalid, 397 Unknown, 0 Unchecked, 4.60ms Time], IncrementalHoareTripleChecker [22 Valid, 373 Invalid, 2 Unknown, 0 Unchecked, 5311.96ms Time] [2021-11-07 09:02:04,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-11-07 09:02:04,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 518. [2021-11-07 09:02:04,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 499 states have (on average 1.154308617234469) internal successors, (576), 517 states have internal predecessors, (576), 0 states have call successors, (0), 0 states 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 09:02:04,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 576 transitions. [2021-11-07 09:02:04,777 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 576 transitions. Word has length 110 [2021-11-07 09:02:04,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:04,777 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 576 transitions. [2021-11-07 09:02:04,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 09:02:04,777 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 576 transitions. [2021-11-07 09:02:04,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-07 09:02:04,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:04,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:04,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 09:02:04,778 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:02:04,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:04,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1804561311, now seen corresponding path program 1 times [2021-11-07 09:02:04,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:04,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696963130] [2021-11-07 09:02:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:04,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:08,524 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 09:02:08,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:08,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696963130] [2021-11-07 09:02:08,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696963130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:08,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:08,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 09:02:08,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797756606] [2021-11-07 09:02:08,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:08,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 09:02:08,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:08,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 09:02:08,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:02:08,526 INFO L87 Difference]: Start difference. First operand 518 states and 576 transitions. Second operand has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 09:02:10,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:12,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:14,791 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:18,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:18,714 INFO L93 Difference]: Finished difference Result 921 states and 1020 transitions. [2021-11-07 09:02:18,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 09:02:18,714 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-07 09:02:18,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:18,716 INFO L225 Difference]: With dead ends: 921 [2021-11-07 09:02:18,716 INFO L226 Difference]: Without dead ends: 683 [2021-11-07 09:02:18,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2034.10ms TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2021-11-07 09:02:18,717 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 728 mSDsluCounter, 3191 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 46 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8202.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 3567 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.56ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8682.96ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:18,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 3567 Invalid, 965 Unknown, 0 Unchecked, 10.56ms Time], IncrementalHoareTripleChecker [46 Valid, 916 Invalid, 3 Unknown, 0 Unchecked, 8682.96ms Time] [2021-11-07 09:02:18,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2021-11-07 09:02:18,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 523. [2021-11-07 09:02:18,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 504 states have (on average 1.1547619047619047) internal successors, (582), 522 states have internal predecessors, (582), 0 states have call successors, (0), 0 states 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 09:02:18,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 582 transitions. [2021-11-07 09:02:18,735 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 582 transitions. Word has length 116 [2021-11-07 09:02:18,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:18,735 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 582 transitions. [2021-11-07 09:02:18,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 09:02:18,735 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 582 transitions. [2021-11-07 09:02:18,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 09:02:18,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:18,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:18,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 09:02:18,737 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:02:18,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:18,737 INFO L85 PathProgramCache]: Analyzing trace with hash 361163720, now seen corresponding path program 1 times [2021-11-07 09:02:18,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:18,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815249223] [2021-11-07 09:02:18,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:18,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:20,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:02:20,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:20,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815249223] [2021-11-07 09:02:20,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815249223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:20,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:20,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 09:02:20,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242386022] [2021-11-07 09:02:20,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:20,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 09:02:20,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:20,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 09:02:20,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:02:20,220 INFO L87 Difference]: Start difference. First operand 523 states and 582 transitions. Second operand has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 09:02:22,265 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:24,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:26,475 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:28,597 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:30,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:38,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:02:38,395 INFO L93 Difference]: Finished difference Result 1372 states and 1519 transitions. [2021-11-07 09:02:38,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-07 09:02:38,395 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-07 09:02:38,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:02:38,398 INFO L225 Difference]: With dead ends: 1372 [2021-11-07 09:02:38,398 INFO L226 Difference]: Without dead ends: 1156 [2021-11-07 09:02:38,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3478.16ms TimeCoverageRelationStatistics Valid=261, Invalid=929, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 09:02:38,399 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 1178 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 58 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14188.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 3556 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.43ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15057.70ms IncrementalHoareTripleChecker+Time [2021-11-07 09:02:38,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1178 Valid, 3556 Invalid, 1600 Unknown, 0 Unchecked, 17.43ms Time], IncrementalHoareTripleChecker [58 Valid, 1537 Invalid, 5 Unknown, 0 Unchecked, 15057.70ms Time] [2021-11-07 09:02:38,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-11-07 09:02:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 532. [2021-11-07 09:02:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 513 states have (on average 1.1539961013645224) internal successors, (592), 531 states have internal predecessors, (592), 0 states have call successors, (0), 0 states 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 09:02:38,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 592 transitions. [2021-11-07 09:02:38,414 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 592 transitions. Word has length 118 [2021-11-07 09:02:38,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:02:38,414 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 592 transitions. [2021-11-07 09:02:38,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 09:02:38,415 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 592 transitions. [2021-11-07 09:02:38,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 09:02:38,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:02:38,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:38,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 09:02:38,416 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:02:38,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:02:38,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1747949130, now seen corresponding path program 1 times [2021-11-07 09:02:38,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:02:38,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79073024] [2021-11-07 09:02:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:02:38,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:02:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:02:40,972 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 09:02:40,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:02:40,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79073024] [2021-11-07 09:02:40,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79073024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:02:40,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:02:40,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 09:02:40,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348448542] [2021-11-07 09:02:40,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:02:40,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 09:02:40,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:02:40,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 09:02:40,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-11-07 09:02:40,973 INFO L87 Difference]: Start difference. First operand 532 states and 592 transitions. Second operand has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 09:02:43,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:45,130 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:47,273 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:49,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:51,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:53,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:55,821 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:02:57,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:00,071 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:02,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:04,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:12,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:03:12,685 INFO L93 Difference]: Finished difference Result 1698 states and 1890 transitions. [2021-11-07 09:03:12,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 09:03:12,686 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-07 09:03:12,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:03:12,689 INFO L225 Difference]: With dead ends: 1698 [2021-11-07 09:03:12,689 INFO L226 Difference]: Without dead ends: 1242 [2021-11-07 09:03:12,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 2783.14ms TimeCoverageRelationStatistics Valid=280, Invalid=1280, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 09:03:12,690 INFO L933 BasicCegarLoop]: 493 mSDtfsCounter, 1613 mSDsluCounter, 6035 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 76 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28062.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 6528 SdHoareTripleChecker+Invalid, 2478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.66ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29794.51ms IncrementalHoareTripleChecker+Time [2021-11-07 09:03:12,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1613 Valid, 6528 Invalid, 2478 Unknown, 0 Unchecked, 22.66ms Time], IncrementalHoareTripleChecker [76 Valid, 2391 Invalid, 11 Unknown, 0 Unchecked, 29794.51ms Time] [2021-11-07 09:03:12,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-11-07 09:03:12,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 593. [2021-11-07 09:03:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 574 states have (on average 1.146341463414634) internal successors, (658), 592 states have internal predecessors, (658), 0 states have call successors, (0), 0 states 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 09:03:12,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 658 transitions. [2021-11-07 09:03:12,709 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 658 transitions. Word has length 118 [2021-11-07 09:03:12,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:03:12,710 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 658 transitions. [2021-11-07 09:03:12,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 09:03:12,710 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 658 transitions. [2021-11-07 09:03:12,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 09:03:12,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:03:12,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:03:12,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 09:03:12,712 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:03:12,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:03:12,712 INFO L85 PathProgramCache]: Analyzing trace with hash -945947060, now seen corresponding path program 1 times [2021-11-07 09:03:12,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:03:12,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031194282] [2021-11-07 09:03:12,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:03:12,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:03:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:03:17,124 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 09:03:17,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:03:17,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031194282] [2021-11-07 09:03:17,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031194282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:03:17,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:03:17,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-07 09:03:17,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8920438] [2021-11-07 09:03:17,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:03:17,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 09:03:17,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:03:17,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 09:03:17,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2021-11-07 09:03:17,125 INFO L87 Difference]: Start difference. First operand 593 states and 658 transitions. Second operand has 22 states, 22 states have (on average 5.363636363636363) internal successors, (118), 22 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 09:03:19,168 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:21,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:23,405 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:25,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:27,592 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:29,709 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:31,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:33,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:36,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:38,279 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:40,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:42,503 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:44,615 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:03:46,708 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:00,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:04:00,428 INFO L93 Difference]: Finished difference Result 1214 states and 1337 transitions. [2021-11-07 09:04:00,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-07 09:04:00,429 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.363636363636363) internal successors, (118), 22 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-07 09:04:00,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:04:00,431 INFO L225 Difference]: With dead ends: 1214 [2021-11-07 09:04:00,431 INFO L226 Difference]: Without dead ends: 935 [2021-11-07 09:04:00,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 8214.60ms TimeCoverageRelationStatistics Valid=718, Invalid=3064, Unknown=0, NotChecked=0, Total=3782 [2021-11-07 09:04:00,433 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 1494 mSDsluCounter, 5092 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 116 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34460.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 5566 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.95ms SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36449.35ms IncrementalHoareTripleChecker+Time [2021-11-07 09:04:00,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1494 Valid, 5566 Invalid, 2586 Unknown, 0 Unchecked, 26.95ms Time], IncrementalHoareTripleChecker [116 Valid, 2456 Invalid, 14 Unknown, 0 Unchecked, 36449.35ms Time] [2021-11-07 09:04:00,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2021-11-07 09:04:00,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 639. [2021-11-07 09:04:00,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 620 states have (on average 1.1403225806451613) internal successors, (707), 638 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 09:04:00,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 707 transitions. [2021-11-07 09:04:00,459 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 707 transitions. Word has length 118 [2021-11-07 09:04:00,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:04:00,459 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 707 transitions. [2021-11-07 09:04:00,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.363636363636363) internal successors, (118), 22 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 09:04:00,460 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 707 transitions. [2021-11-07 09:04:00,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 09:04:00,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:04:00,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:00,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 09:04:00,461 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:04:00,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:04:00,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1030993729, now seen corresponding path program 1 times [2021-11-07 09:04:00,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:04:00,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687384852] [2021-11-07 09:04:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:04:00,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:04:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:04:01,358 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 09:04:01,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:04:01,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687384852] [2021-11-07 09:04:01,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687384852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:04:01,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:04:01,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 09:04:01,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020304654] [2021-11-07 09:04:01,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:04:01,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 09:04:01,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:04:01,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 09:04:01,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:04:01,360 INFO L87 Difference]: Start difference. First operand 639 states and 707 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 09:04:03,401 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:05,525 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:07,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:09,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:04:09,904 INFO L93 Difference]: Finished difference Result 1023 states and 1134 transitions. [2021-11-07 09:04:09,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 09:04:09,905 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-07 09:04:09,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:04:09,907 INFO L225 Difference]: With dead ends: 1023 [2021-11-07 09:04:09,907 INFO L226 Difference]: Without dead ends: 870 [2021-11-07 09:04:09,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 468.97ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:04:09,908 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 756 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 32 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7712.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.24ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8199.97ms IncrementalHoareTripleChecker+Time [2021-11-07 09:04:09,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 1638 Invalid, 668 Unknown, 0 Unchecked, 7.24ms Time], IncrementalHoareTripleChecker [32 Valid, 633 Invalid, 3 Unknown, 0 Unchecked, 8199.97ms Time] [2021-11-07 09:04:09,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2021-11-07 09:04:09,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 663. [2021-11-07 09:04:09,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 644 states have (on average 1.1444099378881987) internal successors, (737), 662 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:04:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 737 transitions. [2021-11-07 09:04:09,946 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 737 transitions. Word has length 118 [2021-11-07 09:04:09,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:04:09,946 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 737 transitions. [2021-11-07 09:04:09,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 09:04:09,947 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 737 transitions. [2021-11-07 09:04:09,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 09:04:09,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:04:09,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:09,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 09:04:09,948 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:04:09,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:04:09,963 INFO L85 PathProgramCache]: Analyzing trace with hash 772828291, now seen corresponding path program 1 times [2021-11-07 09:04:09,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:04:09,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667223723] [2021-11-07 09:04:09,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:04:09,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:04:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:04:11,370 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 09:04:11,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:04:11,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667223723] [2021-11-07 09:04:11,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667223723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:04:11,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:04:11,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 09:04:11,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593091418] [2021-11-07 09:04:11,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:04:11,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 09:04:11,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:04:11,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 09:04:11,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:04:11,371 INFO L87 Difference]: Start difference. First operand 663 states and 737 transitions. Second operand has 15 states, 15 states have (on average 7.866666666666666) internal successors, (118), 15 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 09:04:13,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:15,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:17,649 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:19,741 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:21,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:23,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:27,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:04:27,532 INFO L93 Difference]: Finished difference Result 1574 states and 1756 transitions. [2021-11-07 09:04:27,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 09:04:27,533 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.866666666666666) internal successors, (118), 15 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-07 09:04:27,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:04:27,536 INFO L225 Difference]: With dead ends: 1574 [2021-11-07 09:04:27,536 INFO L226 Difference]: Without dead ends: 1212 [2021-11-07 09:04:27,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1456.54ms TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2021-11-07 09:04:27,537 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 1581 mSDsluCounter, 2034 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 90 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14301.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 2453 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.60ms SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15176.62ms IncrementalHoareTripleChecker+Time [2021-11-07 09:04:27,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1581 Valid, 2453 Invalid, 812 Unknown, 0 Unchecked, 11.60ms Time], IncrementalHoareTripleChecker [90 Valid, 716 Invalid, 6 Unknown, 0 Unchecked, 15176.62ms Time] [2021-11-07 09:04:27,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2021-11-07 09:04:27,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 668. [2021-11-07 09:04:27,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 649 states have (on average 1.1432973805855162) internal successors, (742), 667 states have internal predecessors, (742), 0 states have call successors, (0), 0 states 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 09:04:27,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 742 transitions. [2021-11-07 09:04:27,575 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 742 transitions. Word has length 118 [2021-11-07 09:04:27,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:04:27,576 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 742 transitions. [2021-11-07 09:04:27,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.866666666666666) internal successors, (118), 15 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 09:04:27,576 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 742 transitions. [2021-11-07 09:04:27,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 09:04:27,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:04:27,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:27,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-07 09:04:27,578 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:04:27,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:04:27,578 INFO L85 PathProgramCache]: Analyzing trace with hash 25635969, now seen corresponding path program 1 times [2021-11-07 09:04:27,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:04:27,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828750687] [2021-11-07 09:04:27,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:04:27,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:04:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:04:30,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:04:30,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:04:30,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828750687] [2021-11-07 09:04:30,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828750687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:04:30,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:04:30,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-07 09:04:30,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99082944] [2021-11-07 09:04:30,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:04:30,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 09:04:30,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:04:30,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 09:04:30,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-11-07 09:04:30,538 INFO L87 Difference]: Start difference. First operand 668 states and 742 transitions. Second operand has 22 states, 22 states have (on average 5.409090909090909) internal successors, (119), 22 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 09:04:32,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:34,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:36,847 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:38,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:41,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:43,234 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:45,348 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:04:47,466 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:02,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:05:02,381 INFO L93 Difference]: Finished difference Result 1887 states and 2093 transitions. [2021-11-07 09:05:02,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-07 09:05:02,382 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.409090909090909) internal successors, (119), 22 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-07 09:05:02,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:05:02,386 INFO L225 Difference]: With dead ends: 1887 [2021-11-07 09:05:02,386 INFO L226 Difference]: Without dead ends: 1713 [2021-11-07 09:05:02,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2107 ImplicationChecksByTransitivity, 7181.66ms TimeCoverageRelationStatistics Valid=1039, Invalid=5603, Unknown=0, NotChecked=0, Total=6642 [2021-11-07 09:05:02,388 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 2844 mSDsluCounter, 6993 mSDsCounter, 0 mSdLazyCounter, 3350 mSolverCounterSat, 138 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24038.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2844 SdHoareTripleChecker+Valid, 7603 SdHoareTripleChecker+Invalid, 3496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.51ms SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 3350 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25523.93ms IncrementalHoareTripleChecker+Time [2021-11-07 09:05:02,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2844 Valid, 7603 Invalid, 3496 Unknown, 0 Unchecked, 30.51ms Time], IncrementalHoareTripleChecker [138 Valid, 3350 Invalid, 8 Unknown, 0 Unchecked, 25523.93ms Time] [2021-11-07 09:05:02,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2021-11-07 09:05:02,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 759. [2021-11-07 09:05:02,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 740 states have (on average 1.1445945945945946) internal successors, (847), 758 states have internal predecessors, (847), 0 states have call successors, (0), 0 states 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 09:05:02,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 847 transitions. [2021-11-07 09:05:02,415 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 847 transitions. Word has length 119 [2021-11-07 09:05:02,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:05:02,415 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 847 transitions. [2021-11-07 09:05:02,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.409090909090909) internal successors, (119), 22 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 09:05:02,415 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 847 transitions. [2021-11-07 09:05:02,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 09:05:02,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:05:02,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:02,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-07 09:05:02,417 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:05:02,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:05:02,418 INFO L85 PathProgramCache]: Analyzing trace with hash 283801407, now seen corresponding path program 1 times [2021-11-07 09:05:02,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:05:02,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451563205] [2021-11-07 09:05:02,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:05:02,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:05:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:05:04,580 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 09:05:04,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:05:04,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451563205] [2021-11-07 09:05:04,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451563205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:05:04,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:05:04,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 09:05:04,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793353920] [2021-11-07 09:05:04,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:05:04,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 09:05:04,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:05:04,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 09:05:04,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:05:04,582 INFO L87 Difference]: Start difference. First operand 759 states and 847 transitions. Second operand has 14 states, 14 states have (on average 8.5) internal successors, (119), 14 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 09:05:06,636 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:08,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:10,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:12,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:15,112 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:17,182 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:19,304 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:21,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:31,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:05:31,018 INFO L93 Difference]: Finished difference Result 1457 states and 1617 transitions. [2021-11-07 09:05:31,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-07 09:05:31,018 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 14 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-07 09:05:31,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:05:31,021 INFO L225 Difference]: With dead ends: 1457 [2021-11-07 09:05:31,021 INFO L226 Difference]: Without dead ends: 1300 [2021-11-07 09:05:31,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 4477.86ms TimeCoverageRelationStatistics Valid=413, Invalid=1749, Unknown=0, NotChecked=0, Total=2162 [2021-11-07 09:05:31,022 INFO L933 BasicCegarLoop]: 468 mSDtfsCounter, 1477 mSDsluCounter, 4237 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 92 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21166.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 4705 SdHoareTripleChecker+Invalid, 2216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.20ms SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22365.47ms IncrementalHoareTripleChecker+Time [2021-11-07 09:05:31,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1477 Valid, 4705 Invalid, 2216 Unknown, 0 Unchecked, 19.20ms Time], IncrementalHoareTripleChecker [92 Valid, 2116 Invalid, 8 Unknown, 0 Unchecked, 22365.47ms Time] [2021-11-07 09:05:31,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-11-07 09:05:31,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 821. [2021-11-07 09:05:31,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 802 states have (on average 1.139650872817955) internal successors, (914), 820 states have internal predecessors, (914), 0 states have call successors, (0), 0 states 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 09:05:31,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 914 transitions. [2021-11-07 09:05:31,049 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 914 transitions. Word has length 119 [2021-11-07 09:05:31,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:05:31,050 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 914 transitions. [2021-11-07 09:05:31,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 14 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 09:05:31,050 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 914 transitions. [2021-11-07 09:05:31,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 09:05:31,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:05:31,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:31,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-07 09:05:31,052 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:05:31,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:05:31,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1407374213, now seen corresponding path program 1 times [2021-11-07 09:05:31,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:05:31,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570692102] [2021-11-07 09:05:31,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:05:31,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:05:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:05:33,112 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 09:05:33,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:05:33,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570692102] [2021-11-07 09:05:33,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570692102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:05:33,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:05:33,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 09:05:33,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911096670] [2021-11-07 09:05:33,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:05:33,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 09:05:33,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:05:33,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 09:05:33,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:05:33,115 INFO L87 Difference]: Start difference. First operand 821 states and 914 transitions. Second operand has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 09:05:35,160 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:37,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:39,415 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:41,509 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:43,651 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:45,762 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:05:56,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:05:56,171 INFO L93 Difference]: Finished difference Result 1905 states and 2114 transitions. [2021-11-07 09:05:56,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-07 09:05:56,171 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-07 09:05:56,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:05:56,175 INFO L225 Difference]: With dead ends: 1905 [2021-11-07 09:05:56,176 INFO L226 Difference]: Without dead ends: 1749 [2021-11-07 09:05:56,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 4829.84ms TimeCoverageRelationStatistics Valid=582, Invalid=2070, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 09:05:56,181 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 2346 mSDsluCounter, 3863 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 112 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17542.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2346 SdHoareTripleChecker+Valid, 4488 SdHoareTripleChecker+Invalid, 1960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.87ms SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18638.31ms IncrementalHoareTripleChecker+Time [2021-11-07 09:05:56,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2346 Valid, 4488 Invalid, 1960 Unknown, 0 Unchecked, 20.87ms Time], IncrementalHoareTripleChecker [112 Valid, 1842 Invalid, 6 Unknown, 0 Unchecked, 18638.31ms Time] [2021-11-07 09:05:56,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2021-11-07 09:05:56,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 833. [2021-11-07 09:05:56,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 814 states have (on average 1.135135135135135) internal successors, (924), 832 states have internal predecessors, (924), 0 states have call successors, (0), 0 states 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 09:05:56,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 924 transitions. [2021-11-07 09:05:56,244 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 924 transitions. Word has length 119 [2021-11-07 09:05:56,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:05:56,244 INFO L470 AbstractCegarLoop]: Abstraction has 833 states and 924 transitions. [2021-11-07 09:05:56,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 09:05:56,244 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 924 transitions. [2021-11-07 09:05:56,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 09:05:56,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:05:56,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:56,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-07 09:05:56,246 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:05:56,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:05:56,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1440444554, now seen corresponding path program 1 times [2021-11-07 09:05:56,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:05:56,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509367286] [2021-11-07 09:05:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:05:56,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:05:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:05:57,891 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 09:05:57,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:05:57,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509367286] [2021-11-07 09:05:57,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509367286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:05:57,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:05:57,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 09:05:57,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465034088] [2021-11-07 09:05:57,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:05:57,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 09:05:57,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:05:57,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 09:05:57,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:05:57,892 INFO L87 Difference]: Start difference. First operand 833 states and 924 transitions. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 09:05:59,939 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:02,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:04,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:06,288 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:08,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:06:08,670 INFO L93 Difference]: Finished difference Result 1616 states and 1798 transitions. [2021-11-07 09:06:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 09:06:08,670 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-07 09:06:08,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:06:08,673 INFO L225 Difference]: With dead ends: 1616 [2021-11-07 09:06:08,673 INFO L226 Difference]: Without dead ends: 1235 [2021-11-07 09:06:08,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 754.36ms TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2021-11-07 09:06:08,674 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 1070 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 31 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9661.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.36ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10232.63ms IncrementalHoareTripleChecker+Time [2021-11-07 09:06:08,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 2180 Invalid, 619 Unknown, 0 Unchecked, 8.36ms Time], IncrementalHoareTripleChecker [31 Valid, 584 Invalid, 4 Unknown, 0 Unchecked, 10232.63ms Time] [2021-11-07 09:06:08,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2021-11-07 09:06:08,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 843. [2021-11-07 09:06:08,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 824 states have (on average 1.1347087378640777) internal successors, (935), 842 states have internal predecessors, (935), 0 states have call successors, (0), 0 states 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 09:06:08,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 935 transitions. [2021-11-07 09:06:08,703 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 935 transitions. Word has length 121 [2021-11-07 09:06:08,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:06:08,703 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 935 transitions. [2021-11-07 09:06:08,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 09:06:08,703 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 935 transitions. [2021-11-07 09:06:08,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 09:06:08,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:06:08,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:08,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-07 09:06:08,705 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:06:08,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:06:08,705 INFO L85 PathProgramCache]: Analyzing trace with hash 943480184, now seen corresponding path program 1 times [2021-11-07 09:06:08,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:06:08,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594200997] [2021-11-07 09:06:08,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:06:08,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:06:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:06:10,155 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 09:06:10,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:06:10,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594200997] [2021-11-07 09:06:10,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594200997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:06:10,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:06:10,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 09:06:10,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482940692] [2021-11-07 09:06:10,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:06:10,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 09:06:10,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:06:10,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 09:06:10,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:06:10,156 INFO L87 Difference]: Start difference. First operand 843 states and 935 transitions. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 09:06:12,213 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:14,304 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:16,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:18,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:23,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:06:23,443 INFO L93 Difference]: Finished difference Result 1740 states and 1928 transitions. [2021-11-07 09:06:23,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 09:06:23,444 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-07 09:06:23,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:06:23,448 INFO L225 Difference]: With dead ends: 1740 [2021-11-07 09:06:23,448 INFO L226 Difference]: Without dead ends: 1581 [2021-11-07 09:06:23,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1182.68ms TimeCoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 09:06:23,450 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 1180 mSDsluCounter, 3146 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 46 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11531.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 3707 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.96ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12216.61ms IncrementalHoareTripleChecker+Time [2021-11-07 09:06:23,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 3707 Invalid, 1377 Unknown, 0 Unchecked, 13.96ms Time], IncrementalHoareTripleChecker [46 Valid, 1327 Invalid, 4 Unknown, 0 Unchecked, 12216.61ms Time] [2021-11-07 09:06:23,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2021-11-07 09:06:23,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 933. [2021-11-07 09:06:23,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 914 states have (on average 1.135667396061269) internal successors, (1038), 932 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states 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 09:06:23,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1038 transitions. [2021-11-07 09:06:23,488 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1038 transitions. Word has length 121 [2021-11-07 09:06:23,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:06:23,488 INFO L470 AbstractCegarLoop]: Abstraction has 933 states and 1038 transitions. [2021-11-07 09:06:23,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 09:06:23,488 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1038 transitions. [2021-11-07 09:06:23,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 09:06:23,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:06:23,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:23,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-07 09:06:23,490 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:06:23,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:06:23,490 INFO L85 PathProgramCache]: Analyzing trace with hash -644867718, now seen corresponding path program 1 times [2021-11-07 09:06:23,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:06:23,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694747750] [2021-11-07 09:06:23,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:06:23,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:06:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:06:25,068 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 09:06:25,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:06:25,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694747750] [2021-11-07 09:06:25,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694747750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:06:25,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:06:25,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 09:06:25,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567656379] [2021-11-07 09:06:25,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:06:25,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 09:06:25,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:06:25,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 09:06:25,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:06:25,070 INFO L87 Difference]: Start difference. First operand 933 states and 1038 transitions. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 09:06:27,112 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:29,241 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:31,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:33,510 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:38,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:06:38,687 INFO L93 Difference]: Finished difference Result 1635 states and 1819 transitions. [2021-11-07 09:06:38,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 09:06:38,687 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-07 09:06:38,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:06:38,691 INFO L225 Difference]: With dead ends: 1635 [2021-11-07 09:06:38,691 INFO L226 Difference]: Without dead ends: 1406 [2021-11-07 09:06:38,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1712.43ms TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2021-11-07 09:06:38,694 INFO L933 BasicCegarLoop]: 520 mSDtfsCounter, 993 mSDsluCounter, 3455 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 57 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11504.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 3975 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.56ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12210.93ms IncrementalHoareTripleChecker+Time [2021-11-07 09:06:38,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [993 Valid, 3975 Invalid, 1449 Unknown, 0 Unchecked, 11.56ms Time], IncrementalHoareTripleChecker [57 Valid, 1388 Invalid, 4 Unknown, 0 Unchecked, 12210.93ms Time] [2021-11-07 09:06:38,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2021-11-07 09:06:38,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 918. [2021-11-07 09:06:38,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 899 states have (on average 1.135706340378198) internal successors, (1021), 917 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states 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 09:06:38,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1021 transitions. [2021-11-07 09:06:38,733 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1021 transitions. Word has length 121 [2021-11-07 09:06:38,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:06:38,733 INFO L470 AbstractCegarLoop]: Abstraction has 918 states and 1021 transitions. [2021-11-07 09:06:38,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 09:06:38,733 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1021 transitions. [2021-11-07 09:06:38,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 09:06:38,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:06:38,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:38,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-07 09:06:38,755 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:06:38,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:06:38,756 INFO L85 PathProgramCache]: Analyzing trace with hash -85879114, now seen corresponding path program 1 times [2021-11-07 09:06:38,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:06:38,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735839094] [2021-11-07 09:06:38,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:06:38,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:06:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:06:45,441 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 09:06:45,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:06:45,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735839094] [2021-11-07 09:06:45,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735839094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:06:45,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:06:45,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 09:06:45,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519093699] [2021-11-07 09:06:45,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:06:45,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 09:06:45,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:06:45,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 09:06:45,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:06:45,444 INFO L87 Difference]: Start difference. First operand 918 states and 1021 transitions. Second operand has 15 states, 15 states have (on average 8.066666666666666) internal successors, (121), 15 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 09:06:47,535 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:49,639 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:51,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:53,854 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:55,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:06:58,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:02,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:07:02,179 INFO L93 Difference]: Finished difference Result 1302 states and 1443 transitions. [2021-11-07 09:07:02,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 09:07:02,179 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.066666666666666) internal successors, (121), 15 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-07 09:07:02,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:07:02,181 INFO L225 Difference]: With dead ends: 1302 [2021-11-07 09:07:02,181 INFO L226 Difference]: Without dead ends: 841 [2021-11-07 09:07:02,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 3074.77ms TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 09:07:02,182 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 750 mSDsluCounter, 1561 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 54 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13556.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.43ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14301.36ms IncrementalHoareTripleChecker+Time [2021-11-07 09:07:02,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 1865 Invalid, 598 Unknown, 0 Unchecked, 7.43ms Time], IncrementalHoareTripleChecker [54 Valid, 538 Invalid, 6 Unknown, 0 Unchecked, 14301.36ms Time] [2021-11-07 09:07:02,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2021-11-07 09:07:02,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 810. [2021-11-07 09:07:02,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 791 states have (on average 1.1327433628318584) internal successors, (896), 809 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 09:07:02,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 896 transitions. [2021-11-07 09:07:02,210 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 896 transitions. Word has length 121 [2021-11-07 09:07:02,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:07:02,210 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 896 transitions. [2021-11-07 09:07:02,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.066666666666666) internal successors, (121), 15 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 09:07:02,210 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 896 transitions. [2021-11-07 09:07:02,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 09:07:02,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:07:02,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:02,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-07 09:07:02,212 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:07:02,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:07:02,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1597679276, now seen corresponding path program 1 times [2021-11-07 09:07:02,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:07:02,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938604673] [2021-11-07 09:07:02,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:07:02,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:07:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:07:07,381 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 09:07:07,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:07:07,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938604673] [2021-11-07 09:07:07,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938604673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:07:07,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:07:07,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 09:07:07,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137515871] [2021-11-07 09:07:07,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:07:07,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 09:07:07,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:07:07,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 09:07:07,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:07:07,382 INFO L87 Difference]: Start difference. First operand 810 states and 896 transitions. Second operand has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 09:07:09,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:11,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:13,725 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:15,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:19,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:07:19,169 INFO L93 Difference]: Finished difference Result 1218 states and 1351 transitions. [2021-11-07 09:07:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 09:07:19,170 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-07 09:07:19,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:07:19,172 INFO L225 Difference]: With dead ends: 1218 [2021-11-07 09:07:19,172 INFO L226 Difference]: Without dead ends: 816 [2021-11-07 09:07:19,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2566.43ms TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2021-11-07 09:07:19,173 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 1736 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 83 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9290.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.87ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9796.80ms IncrementalHoareTripleChecker+Time [2021-11-07 09:07:19,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1736 Valid, 1555 Invalid, 537 Unknown, 0 Unchecked, 6.87ms Time], IncrementalHoareTripleChecker [83 Valid, 450 Invalid, 4 Unknown, 0 Unchecked, 9796.80ms Time] [2021-11-07 09:07:19,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2021-11-07 09:07:19,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 633. [2021-11-07 09:07:19,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 614 states have (on average 1.1400651465798046) internal successors, (700), 632 states have internal predecessors, (700), 0 states have call successors, (0), 0 states 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 09:07:19,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 700 transitions. [2021-11-07 09:07:19,199 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 700 transitions. Word has length 121 [2021-11-07 09:07:19,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:07:19,199 INFO L470 AbstractCegarLoop]: Abstraction has 633 states and 700 transitions. [2021-11-07 09:07:19,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 09:07:19,200 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 700 transitions. [2021-11-07 09:07:19,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 09:07:19,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:07:19,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:19,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-07 09:07:19,201 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:07:19,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:07:19,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1873322857, now seen corresponding path program 1 times [2021-11-07 09:07:19,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:07:19,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526289693] [2021-11-07 09:07:19,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:07:19,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:07:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:07:20,700 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 09:07:20,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:07:20,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526289693] [2021-11-07 09:07:20,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526289693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:07:20,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:07:20,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 09:07:20,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344454989] [2021-11-07 09:07:20,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:07:20,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 09:07:20,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:07:20,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 09:07:20,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:07:20,702 INFO L87 Difference]: Start difference. First operand 633 states and 700 transitions. Second operand has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 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 09:07:22,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:24,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:27,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:29,137 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:33,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:07:33,839 INFO L93 Difference]: Finished difference Result 1524 states and 1692 transitions. [2021-11-07 09:07:33,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 09:07:33,839 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 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 124 [2021-11-07 09:07:33,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:07:33,842 INFO L225 Difference]: With dead ends: 1524 [2021-11-07 09:07:33,842 INFO L226 Difference]: Without dead ends: 1291 [2021-11-07 09:07:33,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1815.97ms TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2021-11-07 09:07:33,843 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 1040 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 47 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11013.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.88ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11655.61ms IncrementalHoareTripleChecker+Time [2021-11-07 09:07:33,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 2910 Invalid, 1241 Unknown, 0 Unchecked, 11.88ms Time], IncrementalHoareTripleChecker [47 Valid, 1190 Invalid, 4 Unknown, 0 Unchecked, 11655.61ms Time] [2021-11-07 09:07:33,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-11-07 09:07:33,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 684. [2021-11-07 09:07:33,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 665 states have (on average 1.1353383458646618) internal successors, (755), 683 states have internal predecessors, (755), 0 states have call successors, (0), 0 states 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 09:07:33,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 755 transitions. [2021-11-07 09:07:33,868 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 755 transitions. Word has length 124 [2021-11-07 09:07:33,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:07:33,868 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 755 transitions. [2021-11-07 09:07:33,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 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 09:07:33,869 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 755 transitions. [2021-11-07 09:07:33,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 09:07:33,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:07:33,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:33,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-07 09:07:33,870 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:07:33,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:07:33,870 INFO L85 PathProgramCache]: Analyzing trace with hash 372256597, now seen corresponding path program 1 times [2021-11-07 09:07:33,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:07:33,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304339249] [2021-11-07 09:07:33,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:07:33,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:07:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:07:35,560 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 09:07:35,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:07:35,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304339249] [2021-11-07 09:07:35,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304339249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:07:35,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:07:35,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 09:07:35,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813331773] [2021-11-07 09:07:35,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:07:35,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 09:07:35,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:07:35,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 09:07:35,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 09:07:35,561 INFO L87 Difference]: Start difference. First operand 684 states and 755 transitions. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 09:07:37,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:39,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:41,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:43,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:07:43,859 INFO L93 Difference]: Finished difference Result 1103 states and 1222 transitions. [2021-11-07 09:07:43,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 09:07:43,860 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 124 [2021-11-07 09:07:43,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:07:43,861 INFO L225 Difference]: With dead ends: 1103 [2021-11-07 09:07:43,862 INFO L226 Difference]: Without dead ends: 787 [2021-11-07 09:07:43,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 691.97ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:07:43,862 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 122 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7556.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.82ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7959.15ms IncrementalHoareTripleChecker+Time [2021-11-07 09:07:43,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 1764 Invalid, 569 Unknown, 0 Unchecked, 4.82ms Time], IncrementalHoareTripleChecker [5 Valid, 561 Invalid, 3 Unknown, 0 Unchecked, 7959.15ms Time] [2021-11-07 09:07:43,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-11-07 09:07:43,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 667. [2021-11-07 09:07:43,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 648 states have (on average 1.1311728395061729) internal successors, (733), 666 states have internal predecessors, (733), 0 states have call successors, (0), 0 states 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 09:07:43,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 733 transitions. [2021-11-07 09:07:43,886 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 733 transitions. Word has length 124 [2021-11-07 09:07:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:07:43,886 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 733 transitions. [2021-11-07 09:07:43,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 09:07:43,887 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 733 transitions. [2021-11-07 09:07:43,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 09:07:43,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:07:43,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:43,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-07 09:07:43,888 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:07:43,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:07:43,889 INFO L85 PathProgramCache]: Analyzing trace with hash 88251801, now seen corresponding path program 1 times [2021-11-07 09:07:43,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:07:43,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040668336] [2021-11-07 09:07:43,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:07:43,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:07:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:07:46,842 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 09:07:46,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:07:46,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040668336] [2021-11-07 09:07:46,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040668336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:07:46,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:07:46,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-07 09:07:46,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405964883] [2021-11-07 09:07:46,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:07:46,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 09:07:46,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:07:46,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 09:07:46,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2021-11-07 09:07:46,845 INFO L87 Difference]: Start difference. First operand 667 states and 733 transitions. Second operand has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 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 09:07:48,894 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:51,011 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:53,146 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:55,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:57,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:07:59,494 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:07,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:08:07,503 INFO L93 Difference]: Finished difference Result 1361 states and 1506 transitions. [2021-11-07 09:08:07,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 09:08:07,504 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 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 124 [2021-11-07 09:08:07,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:08:07,506 INFO L225 Difference]: With dead ends: 1361 [2021-11-07 09:08:07,506 INFO L226 Difference]: Without dead ends: 1128 [2021-11-07 09:08:07,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 3853.50ms TimeCoverageRelationStatistics Valid=269, Invalid=1291, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 09:08:07,507 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 1571 mSDsluCounter, 3757 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 90 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16914.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 4131 SdHoareTripleChecker+Invalid, 1650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.44ms SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17932.94ms IncrementalHoareTripleChecker+Time [2021-11-07 09:08:07,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1571 Valid, 4131 Invalid, 1650 Unknown, 0 Unchecked, 20.44ms Time], IncrementalHoareTripleChecker [90 Valid, 1554 Invalid, 6 Unknown, 0 Unchecked, 17932.94ms Time] [2021-11-07 09:08:07,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-11-07 09:08:07,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 682. [2021-11-07 09:08:07,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 663 states have (on average 1.1312217194570136) internal successors, (750), 681 states have internal predecessors, (750), 0 states have call successors, (0), 0 states 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 09:08:07,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 750 transitions. [2021-11-07 09:08:07,540 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 750 transitions. Word has length 124 [2021-11-07 09:08:07,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:08:07,541 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 750 transitions. [2021-11-07 09:08:07,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 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 09:08:07,541 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 750 transitions. [2021-11-07 09:08:07,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 09:08:07,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:08:07,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:07,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-07 09:08:07,542 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:08:07,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:08:07,543 INFO L85 PathProgramCache]: Analyzing trace with hash 161314119, now seen corresponding path program 1 times [2021-11-07 09:08:07,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:08:07,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171840353] [2021-11-07 09:08:07,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:08:07,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:08:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:08:11,550 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 09:08:11,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:08:11,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171840353] [2021-11-07 09:08:11,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171840353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:08:11,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:08:11,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 09:08:11,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730031967] [2021-11-07 09:08:11,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:08:11,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 09:08:11,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:08:11,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 09:08:11,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:08:11,552 INFO L87 Difference]: Start difference. First operand 682 states and 750 transitions. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 09:08:13,599 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:15,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:18,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:08:18,346 INFO L93 Difference]: Finished difference Result 1038 states and 1144 transitions. [2021-11-07 09:08:18,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 09:08:18,346 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-07 09:08:18,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:08:18,347 INFO L225 Difference]: With dead ends: 1038 [2021-11-07 09:08:18,348 INFO L226 Difference]: Without dead ends: 876 [2021-11-07 09:08:18,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1107.24ms TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2021-11-07 09:08:18,348 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 1792 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 50 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5678.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.86ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6024.99ms IncrementalHoareTripleChecker+Time [2021-11-07 09:08:18,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1792 Valid, 1586 Invalid, 686 Unknown, 0 Unchecked, 8.86ms Time], IncrementalHoareTripleChecker [50 Valid, 634 Invalid, 2 Unknown, 0 Unchecked, 6024.99ms Time] [2021-11-07 09:08:18,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-11-07 09:08:18,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 688. [2021-11-07 09:08:18,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 669 states have (on average 1.1315396113602392) internal successors, (757), 687 states have internal predecessors, (757), 0 states have call successors, (0), 0 states 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 09:08:18,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 757 transitions. [2021-11-07 09:08:18,373 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 757 transitions. Word has length 127 [2021-11-07 09:08:18,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:08:18,374 INFO L470 AbstractCegarLoop]: Abstraction has 688 states and 757 transitions. [2021-11-07 09:08:18,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 09:08:18,374 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 757 transitions. [2021-11-07 09:08:18,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 09:08:18,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:08:18,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:18,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-07 09:08:18,375 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:08:18,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:08:18,376 INFO L85 PathProgramCache]: Analyzing trace with hash -337355653, now seen corresponding path program 1 times [2021-11-07 09:08:18,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:08:18,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328116979] [2021-11-07 09:08:18,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:08:18,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:08:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:08:22,288 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 09:08:22,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:08:22,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328116979] [2021-11-07 09:08:22,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328116979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:08:22,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:08:22,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 09:08:22,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348634248] [2021-11-07 09:08:22,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:08:22,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 09:08:22,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:08:22,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 09:08:22,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:08:22,289 INFO L87 Difference]: Start difference. First operand 688 states and 757 transitions. Second operand has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 09:08:24,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:26,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:28,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:08:28,012 INFO L93 Difference]: Finished difference Result 1226 states and 1341 transitions. [2021-11-07 09:08:28,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 09:08:28,012 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-07 09:08:28,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:08:28,013 INFO L225 Difference]: With dead ends: 1226 [2021-11-07 09:08:28,014 INFO L226 Difference]: Without dead ends: 772 [2021-11-07 09:08:28,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 624.99ms TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-07 09:08:28,014 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 1022 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 37 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4896.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.46ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5220.60ms IncrementalHoareTripleChecker+Time [2021-11-07 09:08:28,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1022 Valid, 1267 Invalid, 379 Unknown, 0 Unchecked, 3.46ms Time], IncrementalHoareTripleChecker [37 Valid, 340 Invalid, 2 Unknown, 0 Unchecked, 5220.60ms Time] [2021-11-07 09:08:28,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-11-07 09:08:28,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 669. [2021-11-07 09:08:28,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 650 states have (on average 1.1307692307692307) internal successors, (735), 668 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 09:08:28,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 735 transitions. [2021-11-07 09:08:28,039 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 735 transitions. Word has length 127 [2021-11-07 09:08:28,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:08:28,039 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 735 transitions. [2021-11-07 09:08:28,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 09:08:28,040 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 735 transitions. [2021-11-07 09:08:28,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-07 09:08:28,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:08:28,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:28,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-07 09:08:28,041 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:08:28,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:08:28,045 INFO L85 PathProgramCache]: Analyzing trace with hash 187195179, now seen corresponding path program 1 times [2021-11-07 09:08:28,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:08:28,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569760083] [2021-11-07 09:08:28,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:08:28,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:08:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:08:28,273 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 09:08:28,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:08:28,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569760083] [2021-11-07 09:08:28,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569760083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:08:28,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:08:28,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:08:28,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016672561] [2021-11-07 09:08:28,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:08:28,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:08:28,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:08:28,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:08:28,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:08:28,281 INFO L87 Difference]: Start difference. First operand 669 states and 735 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 09:08:28,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:08:28,392 INFO L93 Difference]: Finished difference Result 896 states and 987 transitions. [2021-11-07 09:08:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:08:28,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2021-11-07 09:08:28,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:08:28,394 INFO L225 Difference]: With dead ends: 896 [2021-11-07 09:08:28,395 INFO L226 Difference]: Without dead ends: 783 [2021-11-07 09:08:28,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.83ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:08:28,395 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 201 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.69ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.62ms IncrementalHoareTripleChecker+Time [2021-11-07 09:08:28,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 1309 Invalid, 16 Unknown, 0 Unchecked, 0.69ms Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 42.62ms Time] [2021-11-07 09:08:28,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-11-07 09:08:28,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 672. [2021-11-07 09:08:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 653 states have (on average 1.1301684532924963) internal successors, (738), 671 states have internal predecessors, (738), 0 states have call successors, (0), 0 states 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 09:08:28,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 738 transitions. [2021-11-07 09:08:28,423 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 738 transitions. Word has length 128 [2021-11-07 09:08:28,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:08:28,424 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 738 transitions. [2021-11-07 09:08:28,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 09:08:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 738 transitions. [2021-11-07 09:08:28,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-07 09:08:28,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:08:28,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:28,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-07 09:08:28,425 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:08:28,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:08:28,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1510363894, now seen corresponding path program 1 times [2021-11-07 09:08:28,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:08:28,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041781009] [2021-11-07 09:08:28,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:08:28,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:08:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:08:28,846 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 09:08:28,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:08:28,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041781009] [2021-11-07 09:08:28,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041781009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:08:28,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:08:28,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:08:28,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289803179] [2021-11-07 09:08:28,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:08:28,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:08:28,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:08:28,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:08:28,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:08:28,847 INFO L87 Difference]: Start difference. First operand 672 states and 738 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 09:08:29,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:08:29,300 INFO L93 Difference]: Finished difference Result 737 states and 813 transitions. [2021-11-07 09:08:29,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 09:08:29,301 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-07 09:08:29,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:08:29,302 INFO L225 Difference]: With dead ends: 737 [2021-11-07 09:08:29,302 INFO L226 Difference]: Without dead ends: 735 [2021-11-07 09:08:29,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 267.18ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-07 09:08:29,303 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 905 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 273.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.21ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 292.10ms IncrementalHoareTripleChecker+Time [2021-11-07 09:08:29,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 920 Invalid, 107 Unknown, 0 Unchecked, 1.21ms Time], IncrementalHoareTripleChecker [5 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 292.10ms Time] [2021-11-07 09:08:29,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-07 09:08:29,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 670. [2021-11-07 09:08:29,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 652 states have (on average 1.1288343558282208) internal successors, (736), 669 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 09:08:29,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 736 transitions. [2021-11-07 09:08:29,333 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 736 transitions. Word has length 129 [2021-11-07 09:08:29,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:08:29,333 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 736 transitions. [2021-11-07 09:08:29,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 09:08:29,333 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 736 transitions. [2021-11-07 09:08:29,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-07 09:08:29,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:08:29,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:29,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-07 09:08:29,335 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:08:29,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:08:29,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1212106020, now seen corresponding path program 1 times [2021-11-07 09:08:29,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:08:29,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323427629] [2021-11-07 09:08:29,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:08:29,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:08:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:08:29,828 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 09:08:29,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:08:29,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323427629] [2021-11-07 09:08:29,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323427629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:08:29,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:08:29,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:08:29,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824040296] [2021-11-07 09:08:29,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:08:29,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:08:29,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:08:29,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:08:29,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:08:29,829 INFO L87 Difference]: Start difference. First operand 670 states and 736 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 09:08:31,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:08:31,484 INFO L93 Difference]: Finished difference Result 922 states and 1012 transitions. [2021-11-07 09:08:31,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 09:08:31,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-07 09:08:31,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:08:31,486 INFO L225 Difference]: With dead ends: 922 [2021-11-07 09:08:31,486 INFO L226 Difference]: Without dead ends: 914 [2021-11-07 09:08:31,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 417.59ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:08:31,487 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 409 mSDsluCounter, 1424 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1210.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.80ms SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1289.56ms IncrementalHoareTripleChecker+Time [2021-11-07 09:08:31,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 1711 Invalid, 640 Unknown, 0 Unchecked, 4.80ms Time], IncrementalHoareTripleChecker [150 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 1289.56ms Time] [2021-11-07 09:08:31,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-11-07 09:08:31,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 678. [2021-11-07 09:08:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 660 states have (on average 1.1272727272727272) internal successors, (744), 677 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 09:08:31,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 744 transitions. [2021-11-07 09:08:31,513 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 744 transitions. Word has length 129 [2021-11-07 09:08:31,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:08:31,513 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 744 transitions. [2021-11-07 09:08:31,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 09:08:31,514 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 744 transitions. [2021-11-07 09:08:31,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-07 09:08:31,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:08:31,515 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:31,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-07 09:08:31,515 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:08:31,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:08:31,515 INFO L85 PathProgramCache]: Analyzing trace with hash -2021452646, now seen corresponding path program 1 times [2021-11-07 09:08:31,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:08:31,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681167551] [2021-11-07 09:08:31,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:08:31,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:08:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:08:32,724 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 09:08:32,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:08:32,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681167551] [2021-11-07 09:08:32,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681167551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:08:32,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:08:32,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:08:32,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532738455] [2021-11-07 09:08:32,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:08:32,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:08:32,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:08:32,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:08:32,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:08:32,727 INFO L87 Difference]: Start difference. First operand 678 states and 744 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 09:08:34,777 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:36,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:39,026 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:41,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:43,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:08:43,469 INFO L93 Difference]: Finished difference Result 1017 states and 1113 transitions. [2021-11-07 09:08:43,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 09:08:43,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-07 09:08:43,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:08:43,471 INFO L225 Difference]: With dead ends: 1017 [2021-11-07 09:08:43,471 INFO L226 Difference]: Without dead ends: 892 [2021-11-07 09:08:43,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 469.44ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:08:43,472 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 728 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 36 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9843.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.76ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10389.31ms IncrementalHoareTripleChecker+Time [2021-11-07 09:08:43,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 1478 Invalid, 682 Unknown, 0 Unchecked, 6.76ms Time], IncrementalHoareTripleChecker [36 Valid, 642 Invalid, 4 Unknown, 0 Unchecked, 10389.31ms Time] [2021-11-07 09:08:43,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-11-07 09:08:43,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 679. [2021-11-07 09:08:43,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 661 states have (on average 1.1270801815431164) internal successors, (745), 678 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 09:08:43,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 745 transitions. [2021-11-07 09:08:43,502 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 745 transitions. Word has length 129 [2021-11-07 09:08:43,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:08:43,502 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 745 transitions. [2021-11-07 09:08:43,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 09:08:43,502 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 745 transitions. [2021-11-07 09:08:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-07 09:08:43,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:08:43,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:43,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-07 09:08:43,503 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:08:43,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:08:43,504 INFO L85 PathProgramCache]: Analyzing trace with hash -239098792, now seen corresponding path program 1 times [2021-11-07 09:08:43,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:08:43,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125416248] [2021-11-07 09:08:43,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:08:43,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:08:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:08:48,039 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 09:08:48,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:08:48,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125416248] [2021-11-07 09:08:48,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125416248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:08:48,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:08:48,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-07 09:08:48,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621320240] [2021-11-07 09:08:48,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:08:48,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 09:08:48,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:08:48,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 09:08:48,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2021-11-07 09:08:48,041 INFO L87 Difference]: Start difference. First operand 679 states and 745 transitions. Second operand has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 09:08:50,083 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:52,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:54,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:56,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:08:58,593 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:00,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:02,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:04,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:07,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:18,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:09:18,974 INFO L93 Difference]: Finished difference Result 1765 states and 1953 transitions. [2021-11-07 09:09:18,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-07 09:09:18,975 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-07 09:09:18,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:09:18,977 INFO L225 Difference]: With dead ends: 1765 [2021-11-07 09:09:18,977 INFO L226 Difference]: Without dead ends: 1763 [2021-11-07 09:09:18,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 6162.56ms TimeCoverageRelationStatistics Valid=518, Invalid=2238, Unknown=0, NotChecked=0, Total=2756 [2021-11-07 09:09:18,979 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 4046 mSDsluCounter, 4598 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 220 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24325.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4046 SdHoareTripleChecker+Valid, 4855 SdHoareTripleChecker+Invalid, 2515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.45ms SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25809.58ms IncrementalHoareTripleChecker+Time [2021-11-07 09:09:18,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4046 Valid, 4855 Invalid, 2515 Unknown, 0 Unchecked, 23.45ms Time], IncrementalHoareTripleChecker [220 Valid, 2286 Invalid, 9 Unknown, 0 Unchecked, 25809.58ms Time] [2021-11-07 09:09:18,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-11-07 09:09:19,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 909. [2021-11-07 09:09:19,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 891 states have (on average 1.1346801346801347) internal successors, (1011), 908 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states 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 09:09:19,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1011 transitions. [2021-11-07 09:09:19,018 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1011 transitions. Word has length 131 [2021-11-07 09:09:19,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:09:19,018 INFO L470 AbstractCegarLoop]: Abstraction has 909 states and 1011 transitions. [2021-11-07 09:09:19,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 09:09:19,019 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1011 transitions. [2021-11-07 09:09:19,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-07 09:09:19,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:09:19,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:09:19,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-07 09:09:19,021 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:09:19,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:09:19,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1924517782, now seen corresponding path program 1 times [2021-11-07 09:09:19,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:09:19,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105081172] [2021-11-07 09:09:19,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:09:19,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:09:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:09:22,382 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 09:09:22,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:09:22,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105081172] [2021-11-07 09:09:22,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105081172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:09:22,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:09:22,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-07 09:09:22,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513275915] [2021-11-07 09:09:22,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:09:22,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 09:09:22,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:09:22,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 09:09:22,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-11-07 09:09:22,383 INFO L87 Difference]: Start difference. First operand 909 states and 1011 transitions. Second operand has 20 states, 20 states have (on average 6.55) internal successors, (131), 20 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 09:09:24,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:26,533 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:28,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:30,792 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:32,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:35,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:37,203 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:39,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:41,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:43,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:45,649 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:54,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:09:54,133 INFO L93 Difference]: Finished difference Result 1518 states and 1679 transitions. [2021-11-07 09:09:54,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 09:09:54,134 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.55) internal successors, (131), 20 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-07 09:09:54,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:09:54,136 INFO L225 Difference]: With dead ends: 1518 [2021-11-07 09:09:54,136 INFO L226 Difference]: Without dead ends: 1239 [2021-11-07 09:09:54,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2997.19ms TimeCoverageRelationStatistics Valid=225, Invalid=897, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 09:09:54,136 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 1096 mSDsluCounter, 5603 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 77 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28075.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 6136 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.94ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29741.16ms IncrementalHoareTripleChecker+Time [2021-11-07 09:09:54,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1096 Valid, 6136 Invalid, 2537 Unknown, 0 Unchecked, 19.94ms Time], IncrementalHoareTripleChecker [77 Valid, 2449 Invalid, 11 Unknown, 0 Unchecked, 29741.16ms Time] [2021-11-07 09:09:54,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-11-07 09:09:54,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 873. [2021-11-07 09:09:54,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 855 states have (on average 1.1239766081871345) internal successors, (961), 872 states have internal predecessors, (961), 0 states have call successors, (0), 0 states 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 09:09:54,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 961 transitions. [2021-11-07 09:09:54,173 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 961 transitions. Word has length 131 [2021-11-07 09:09:54,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:09:54,174 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 961 transitions. [2021-11-07 09:09:54,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.55) internal successors, (131), 20 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 09:09:54,174 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 961 transitions. [2021-11-07 09:09:54,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 09:09:54,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:09:54,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:09:54,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-07 09:09:54,175 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:09:54,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:09:54,176 INFO L85 PathProgramCache]: Analyzing trace with hash 735837078, now seen corresponding path program 1 times [2021-11-07 09:09:54,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:09:54,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215528130] [2021-11-07 09:09:54,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:09:54,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:09:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:09:55,626 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 09:09:55,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:09:55,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215528130] [2021-11-07 09:09:55,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215528130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:09:55,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:09:55,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 09:09:55,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160052948] [2021-11-07 09:09:55,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:09:55,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 09:09:55,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:09:55,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 09:09:55,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-07 09:09:55,627 INFO L87 Difference]: Start difference. First operand 873 states and 961 transitions. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 09:09:57,671 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:09:59,776 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:02,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:10:02,643 INFO L93 Difference]: Finished difference Result 1310 states and 1446 transitions. [2021-11-07 09:10:02,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 09:10:02,643 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-07 09:10:02,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:10:02,645 INFO L225 Difference]: With dead ends: 1310 [2021-11-07 09:10:02,645 INFO L226 Difference]: Without dead ends: 1159 [2021-11-07 09:10:02,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 731.90ms TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:10:02,646 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 683 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 28 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6129.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.78ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6455.90ms IncrementalHoareTripleChecker+Time [2021-11-07 09:10:02,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 2185 Invalid, 892 Unknown, 0 Unchecked, 6.78ms Time], IncrementalHoareTripleChecker [28 Valid, 862 Invalid, 2 Unknown, 0 Unchecked, 6455.90ms Time] [2021-11-07 09:10:02,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2021-11-07 09:10:02,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 901. [2021-11-07 09:10:02,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 883 states have (on average 1.1268403171007928) internal successors, (995), 900 states have internal predecessors, (995), 0 states have call successors, (0), 0 states 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 09:10:02,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 995 transitions. [2021-11-07 09:10:02,684 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 995 transitions. Word has length 133 [2021-11-07 09:10:02,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:10:02,685 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 995 transitions. [2021-11-07 09:10:02,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 09:10:02,685 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 995 transitions. [2021-11-07 09:10:02,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 09:10:02,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:10:02,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:02,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-07 09:10:02,686 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:10:02,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:10:02,687 INFO L85 PathProgramCache]: Analyzing trace with hash 477671640, now seen corresponding path program 1 times [2021-11-07 09:10:02,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:10:02,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622952781] [2021-11-07 09:10:02,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:10:02,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:10:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:10:07,571 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 09:10:07,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:10:07,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622952781] [2021-11-07 09:10:07,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622952781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:10:07,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:10:07,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 09:10:07,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668495677] [2021-11-07 09:10:07,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:10:07,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 09:10:07,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:10:07,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 09:10:07,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 09:10:07,572 INFO L87 Difference]: Start difference. First operand 901 states and 995 transitions. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 09:10:09,633 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:11,745 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:13,832 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:16,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:10:16,003 INFO L93 Difference]: Finished difference Result 1276 states and 1410 transitions. [2021-11-07 09:10:16,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 09:10:16,004 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-07 09:10:16,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:10:16,005 INFO L225 Difference]: With dead ends: 1276 [2021-11-07 09:10:16,005 INFO L226 Difference]: Without dead ends: 1065 [2021-11-07 09:10:16,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 610.38ms TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-11-07 09:10:16,006 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 1101 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 40 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7632.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.57ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8032.89ms IncrementalHoareTripleChecker+Time [2021-11-07 09:10:16,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1101 Valid, 1733 Invalid, 642 Unknown, 0 Unchecked, 4.57ms Time], IncrementalHoareTripleChecker [40 Valid, 599 Invalid, 3 Unknown, 0 Unchecked, 8032.89ms Time] [2021-11-07 09:10:16,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-11-07 09:10:16,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 825. [2021-11-07 09:10:16,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 807 states have (on average 1.1164807930607188) internal successors, (901), 824 states have internal predecessors, (901), 0 states have call successors, (0), 0 states 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 09:10:16,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 901 transitions. [2021-11-07 09:10:16,046 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 901 transitions. Word has length 133 [2021-11-07 09:10:16,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:10:16,047 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 901 transitions. [2021-11-07 09:10:16,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 09:10:16,047 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 901 transitions. [2021-11-07 09:10:16,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 09:10:16,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:10:16,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:16,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-07 09:10:16,048 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:10:16,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:10:16,049 INFO L85 PathProgramCache]: Analyzing trace with hash -955338542, now seen corresponding path program 1 times [2021-11-07 09:10:16,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:10:16,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095820349] [2021-11-07 09:10:16,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:10:16,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:10:16,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:10:16,989 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 09:10:16,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:10:16,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095820349] [2021-11-07 09:10:16,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095820349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:10:16,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:10:16,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 09:10:16,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812333376] [2021-11-07 09:10:16,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:10:16,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 09:10:16,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:10:16,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 09:10:16,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:10:16,991 INFO L87 Difference]: Start difference. First operand 825 states and 901 transitions. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 09:10:19,036 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:21,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:23,273 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:25,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:10:25,621 INFO L93 Difference]: Finished difference Result 1222 states and 1342 transitions. [2021-11-07 09:10:25,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 09:10:25,622 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-07 09:10:25,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:10:25,623 INFO L225 Difference]: With dead ends: 1222 [2021-11-07 09:10:25,624 INFO L226 Difference]: Without dead ends: 1085 [2021-11-07 09:10:25,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 501.11ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-07 09:10:25,624 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 607 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 33 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7722.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.13ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8208.86ms IncrementalHoareTripleChecker+Time [2021-11-07 09:10:25,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [607 Valid, 2149 Invalid, 740 Unknown, 0 Unchecked, 7.13ms Time], IncrementalHoareTripleChecker [33 Valid, 704 Invalid, 3 Unknown, 0 Unchecked, 8208.86ms Time] [2021-11-07 09:10:25,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2021-11-07 09:10:25,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 867. [2021-11-07 09:10:25,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 849 states have (on average 1.1177856301531213) internal successors, (949), 866 states have internal predecessors, (949), 0 states have call successors, (0), 0 states 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 09:10:25,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 949 transitions. [2021-11-07 09:10:25,664 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 949 transitions. Word has length 133 [2021-11-07 09:10:25,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:10:25,664 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 949 transitions. [2021-11-07 09:10:25,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 09:10:25,664 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 949 transitions. [2021-11-07 09:10:25,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 09:10:25,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:10:25,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:25,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-07 09:10:25,665 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:10:25,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:10:25,666 INFO L85 PathProgramCache]: Analyzing trace with hash 967889492, now seen corresponding path program 1 times [2021-11-07 09:10:25,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:10:25,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110215900] [2021-11-07 09:10:25,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:10:25,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:10:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:10:27,118 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 09:10:27,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:10:27,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110215900] [2021-11-07 09:10:27,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110215900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:10:27,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:10:27,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 09:10:27,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441587682] [2021-11-07 09:10:27,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:10:27,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 09:10:27,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:10:27,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 09:10:27,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:10:27,120 INFO L87 Difference]: Start difference. First operand 867 states and 949 transitions. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 09:10:29,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:31,295 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:32,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:10:32,848 INFO L93 Difference]: Finished difference Result 1448 states and 1586 transitions. [2021-11-07 09:10:32,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 09:10:32,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-07 09:10:32,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:10:32,850 INFO L225 Difference]: With dead ends: 1448 [2021-11-07 09:10:32,850 INFO L226 Difference]: Without dead ends: 1143 [2021-11-07 09:10:32,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 303.10ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:10:32,851 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 509 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 26 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5133.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.01ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5466.53ms IncrementalHoareTripleChecker+Time [2021-11-07 09:10:32,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 1211 Invalid, 454 Unknown, 0 Unchecked, 4.01ms Time], IncrementalHoareTripleChecker [26 Valid, 426 Invalid, 2 Unknown, 0 Unchecked, 5466.53ms Time] [2021-11-07 09:10:32,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2021-11-07 09:10:32,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 863. [2021-11-07 09:10:32,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 845 states have (on average 1.1136094674556214) internal successors, (941), 862 states have internal predecessors, (941), 0 states have call successors, (0), 0 states 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 09:10:32,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 941 transitions. [2021-11-07 09:10:32,894 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 941 transitions. Word has length 133 [2021-11-07 09:10:32,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:10:32,894 INFO L470 AbstractCegarLoop]: Abstraction has 863 states and 941 transitions. [2021-11-07 09:10:32,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 09:10:32,894 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 941 transitions. [2021-11-07 09:10:32,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 09:10:32,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:10:32,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:32,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-07 09:10:32,895 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:10:32,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:10:32,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2140527014, now seen corresponding path program 1 times [2021-11-07 09:10:32,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:10:32,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492053859] [2021-11-07 09:10:32,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:10:32,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:10:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:10:39,326 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 09:10:39,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:10:39,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492053859] [2021-11-07 09:10:39,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492053859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:10:39,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:10:39,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-07 09:10:39,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773659460] [2021-11-07 09:10:39,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:10:39,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 09:10:39,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:10:39,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 09:10:39,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-11-07 09:10:39,327 INFO L87 Difference]: Start difference. First operand 863 states and 941 transitions. Second operand has 20 states, 20 states have (on average 6.65) internal successors, (133), 20 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 09:10:41,485 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:43,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:10:45,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:01,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:11:01,743 INFO L93 Difference]: Finished difference Result 1644 states and 1806 transitions. [2021-11-07 09:11:01,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-07 09:11:01,744 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.65) internal successors, (133), 20 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-07 09:11:01,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:11:01,746 INFO L225 Difference]: With dead ends: 1644 [2021-11-07 09:11:01,746 INFO L226 Difference]: Without dead ends: 1529 [2021-11-07 09:11:01,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1137 ImplicationChecksByTransitivity, 14376.94ms TimeCoverageRelationStatistics Valid=743, Invalid=3163, Unknown=0, NotChecked=0, Total=3906 [2021-11-07 09:11:01,747 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 3278 mSDsluCounter, 2708 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 168 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8689.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3278 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.46ms SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9220.33ms IncrementalHoareTripleChecker+Time [2021-11-07 09:11:01,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3278 Valid, 2977 Invalid, 1086 Unknown, 0 Unchecked, 15.46ms Time], IncrementalHoareTripleChecker [168 Valid, 915 Invalid, 3 Unknown, 0 Unchecked, 9220.33ms Time] [2021-11-07 09:11:01,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2021-11-07 09:11:01,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 933. [2021-11-07 09:11:01,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 915 states have (on average 1.1147540983606556) internal successors, (1020), 932 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states 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 09:11:01,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1020 transitions. [2021-11-07 09:11:01,799 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1020 transitions. Word has length 133 [2021-11-07 09:11:01,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:11:01,799 INFO L470 AbstractCegarLoop]: Abstraction has 933 states and 1020 transitions. [2021-11-07 09:11:01,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.65) internal successors, (133), 20 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 09:11:01,799 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1020 transitions. [2021-11-07 09:11:01,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 09:11:01,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:11:01,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:11:01,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-07 09:11:01,800 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:11:01,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:11:01,801 INFO L85 PathProgramCache]: Analyzing trace with hash 683884696, now seen corresponding path program 1 times [2021-11-07 09:11:01,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:11:01,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265410644] [2021-11-07 09:11:01,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:11:01,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:11:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:11:05,399 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 09:11:05,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:11:05,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265410644] [2021-11-07 09:11:05,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265410644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:11:05,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:11:05,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 09:11:05,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276323540] [2021-11-07 09:11:05,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:11:05,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 09:11:05,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:11:05,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 09:11:05,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2021-11-07 09:11:05,400 INFO L87 Difference]: Start difference. First operand 933 states and 1020 transitions. Second operand has 21 states, 21 states have (on average 6.333333333333333) internal successors, (133), 21 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 09:11:07,450 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:09,569 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:11,677 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:13,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:15,938 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:18,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:20,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:22,284 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:24,372 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:31,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:11:31,263 INFO L93 Difference]: Finished difference Result 1674 states and 1841 transitions. [2021-11-07 09:11:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 09:11:31,264 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.333333333333333) internal successors, (133), 21 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-07 09:11:31,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:11:31,272 INFO L225 Difference]: With dead ends: 1674 [2021-11-07 09:11:31,272 INFO L226 Difference]: Without dead ends: 1420 [2021-11-07 09:11:31,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 2849.65ms TimeCoverageRelationStatistics Valid=291, Invalid=1269, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 09:11:31,273 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 1850 mSDsluCounter, 3686 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 104 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22551.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 4004 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.43ms SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23866.19ms IncrementalHoareTripleChecker+Time [2021-11-07 09:11:31,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1850 Valid, 4004 Invalid, 1782 Unknown, 0 Unchecked, 17.43ms Time], IncrementalHoareTripleChecker [104 Valid, 1669 Invalid, 9 Unknown, 0 Unchecked, 23866.19ms Time] [2021-11-07 09:11:31,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-11-07 09:11:31,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 924. [2021-11-07 09:11:31,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 906 states have (on average 1.1147902869757174) internal successors, (1010), 923 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states 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 09:11:31,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1010 transitions. [2021-11-07 09:11:31,325 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1010 transitions. Word has length 133 [2021-11-07 09:11:31,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:11:31,325 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 1010 transitions. [2021-11-07 09:11:31,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.333333333333333) internal successors, (133), 21 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 09:11:31,325 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1010 transitions. [2021-11-07 09:11:31,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 09:11:31,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:11:31,326 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:11:31,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-07 09:11:31,327 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:11:31,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:11:31,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1365503146, now seen corresponding path program 1 times [2021-11-07 09:11:31,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:11:31,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367298537] [2021-11-07 09:11:31,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:11:31,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:11:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:11:34,100 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 09:11:34,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:11:34,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367298537] [2021-11-07 09:11:34,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367298537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:11:34,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:11:34,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-07 09:11:34,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527421560] [2021-11-07 09:11:34,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:11:34,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 09:11:34,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:11:34,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 09:11:34,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-07 09:11:34,101 INFO L87 Difference]: Start difference. First operand 924 states and 1010 transitions. Second operand has 18 states, 18 states have (on average 7.388888888888889) internal successors, (133), 18 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 09:11:36,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:38,295 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:40,394 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:42,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:44,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:46,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:48,843 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:11:54,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:11:54,760 INFO L93 Difference]: Finished difference Result 1564 states and 1714 transitions. [2021-11-07 09:11:54,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-07 09:11:54,760 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.388888888888889) internal successors, (133), 18 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-07 09:11:54,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:11:54,776 INFO L225 Difference]: With dead ends: 1564 [2021-11-07 09:11:54,776 INFO L226 Difference]: Without dead ends: 1070 [2021-11-07 09:11:54,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 3173.19ms TimeCoverageRelationStatistics Valid=332, Invalid=1150, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 09:11:54,779 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 1284 mSDsluCounter, 2778 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 73 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17227.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.25ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18218.86ms IncrementalHoareTripleChecker+Time [2021-11-07 09:11:54,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1284 Valid, 3058 Invalid, 1311 Unknown, 0 Unchecked, 11.25ms Time], IncrementalHoareTripleChecker [73 Valid, 1231 Invalid, 7 Unknown, 0 Unchecked, 18218.86ms Time] [2021-11-07 09:11:54,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2021-11-07 09:11:54,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 834. [2021-11-07 09:11:54,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 816 states have (on average 1.1127450980392157) internal successors, (908), 833 states have internal predecessors, (908), 0 states have call successors, (0), 0 states 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 09:11:54,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 908 transitions. [2021-11-07 09:11:54,830 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 908 transitions. Word has length 133 [2021-11-07 09:11:54,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:11:54,830 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 908 transitions. [2021-11-07 09:11:54,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.388888888888889) internal successors, (133), 18 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 09:11:54,830 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 908 transitions. [2021-11-07 09:11:54,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 09:11:54,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:11:54,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:11:54,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-07 09:11:54,832 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:11:54,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:11:54,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1948940168, now seen corresponding path program 1 times [2021-11-07 09:11:54,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:11:54,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424058422] [2021-11-07 09:11:54,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:11:54,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:12:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:12:06,945 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 09:12:06,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:12:06,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424058422] [2021-11-07 09:12:06,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424058422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:12:06,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:12:06,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-11-07 09:12:06,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455421589] [2021-11-07 09:12:06,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:12:06,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-07 09:12:06,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:12:06,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-07 09:12:06,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1153, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 09:12:06,947 INFO L87 Difference]: Start difference. First operand 834 states and 908 transitions. Second operand has 36 states, 36 states have (on average 3.6944444444444446) internal successors, (133), 36 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 09:12:08,996 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:11,098 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:13,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:15,316 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:17,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:19,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:21,644 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:23,806 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:25,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:28,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:30,154 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:32,244 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:34,401 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:36,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:38,674 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:12:40,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:00,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:08,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:13:08,192 INFO L93 Difference]: Finished difference Result 1505 states and 1640 transitions. [2021-11-07 09:13:08,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-07 09:13:08,193 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.6944444444444446) internal successors, (133), 36 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-07 09:13:08,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:13:08,194 INFO L225 Difference]: With dead ends: 1505 [2021-11-07 09:13:08,194 INFO L226 Difference]: Without dead ends: 1344 [2021-11-07 09:13:08,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1714 ImplicationChecksByTransitivity, 15073.65ms TimeCoverageRelationStatistics Valid=880, Invalid=5600, Unknown=0, NotChecked=0, Total=6480 [2021-11-07 09:13:08,196 INFO L933 BasicCegarLoop]: 493 mSDtfsCounter, 1871 mSDsluCounter, 9052 mSDsCounter, 0 mSdLazyCounter, 4194 mSolverCounterSat, 160 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46810.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1871 SdHoareTripleChecker+Valid, 9545 SdHoareTripleChecker+Invalid, 4370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.47ms SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 4194 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49520.22ms IncrementalHoareTripleChecker+Time [2021-11-07 09:13:08,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1871 Valid, 9545 Invalid, 4370 Unknown, 0 Unchecked, 42.47ms Time], IncrementalHoareTripleChecker [160 Valid, 4194 Invalid, 16 Unknown, 0 Unchecked, 49520.22ms Time] [2021-11-07 09:13:08,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2021-11-07 09:13:08,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 889. [2021-11-07 09:13:08,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 871 states have (on average 1.1067738231917337) internal successors, (964), 888 states have internal predecessors, (964), 0 states have call successors, (0), 0 states 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 09:13:08,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 964 transitions. [2021-11-07 09:13:08,269 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 964 transitions. Word has length 133 [2021-11-07 09:13:08,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:13:08,269 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 964 transitions. [2021-11-07 09:13:08,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.6944444444444446) internal successors, (133), 36 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 09:13:08,269 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 964 transitions. [2021-11-07 09:13:08,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 09:13:08,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:13:08,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:08,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-07 09:13:08,272 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:13:08,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:13:08,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1155241046, now seen corresponding path program 1 times [2021-11-07 09:13:08,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:13:08,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720859442] [2021-11-07 09:13:08,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:13:08,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:13:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:13:10,410 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 09:13:10,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:13:10,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720859442] [2021-11-07 09:13:10,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720859442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:13:10,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:13:10,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 09:13:10,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115700357] [2021-11-07 09:13:10,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:13:10,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 09:13:10,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:13:10,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 09:13:10,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:13:10,412 INFO L87 Difference]: Start difference. First operand 889 states and 964 transitions. Second operand has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 09:13:12,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:14,611 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:16,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:18,787 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:20,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:23,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:13:25,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:13:25,556 INFO L93 Difference]: Finished difference Result 1579 states and 1728 transitions. [2021-11-07 09:13:25,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 09:13:25,556 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-07 09:13:25,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:13:25,558 INFO L225 Difference]: With dead ends: 1579 [2021-11-07 09:13:25,558 INFO L226 Difference]: Without dead ends: 1175 [2021-11-07 09:13:25,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 856.94ms TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2021-11-07 09:13:25,559 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 1410 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 57 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13807.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1410 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.14ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14610.95ms IncrementalHoareTripleChecker+Time [2021-11-07 09:13:25,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1410 Valid, 1706 Invalid, 615 Unknown, 0 Unchecked, 9.14ms Time], IncrementalHoareTripleChecker [57 Valid, 552 Invalid, 6 Unknown, 0 Unchecked, 14610.95ms Time] [2021-11-07 09:13:25,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2021-11-07 09:13:25,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 889. [2021-11-07 09:13:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 871 states have (on average 1.103329506314581) internal successors, (961), 888 states have internal predecessors, (961), 0 states have call successors, (0), 0 states 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 09:13:25,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 961 transitions. [2021-11-07 09:13:25,617 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 961 transitions. Word has length 133 [2021-11-07 09:13:25,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:13:25,617 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 961 transitions. [2021-11-07 09:13:25,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 09:13:25,617 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 961 transitions. [2021-11-07 09:13:25,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 09:13:25,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:13:25,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:25,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-07 09:13:25,618 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 09:13:25,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:13:25,619 INFO L85 PathProgramCache]: Analyzing trace with hash -894146796, now seen corresponding path program 1 times [2021-11-07 09:13:25,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:13:25,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529729691] [2021-11-07 09:13:25,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:13:25,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Killed by 15