./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e59944759baac4a78b3b5460ff6f3a8abaec03123fb9537d86aeca785269fb41 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 10:28:13,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 10:28:13,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 10:28:13,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 10:28:13,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 10:28:13,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 10:28:13,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 10:28:13,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 10:28:13,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 10:28:13,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 10:28:13,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 10:28:13,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 10:28:13,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 10:28:13,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 10:28:13,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 10:28:13,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 10:28:13,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 10:28:13,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 10:28:13,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 10:28:13,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 10:28:13,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 10:28:13,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 10:28:13,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 10:28:13,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 10:28:13,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 10:28:13,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 10:28:13,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 10:28:13,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 10:28:13,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 10:28:13,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 10:28:13,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 10:28:13,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 10:28:13,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 10:28:13,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 10:28:13,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 10:28:13,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 10:28:13,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 10:28:13,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 10:28:13,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 10:28:13,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 10:28:13,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 10:28:13,130 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 10:28:13,164 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 10:28:13,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 10:28:13,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 10:28:13,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 10:28:13,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 10:28:13,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 10:28:13,167 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 10:28:13,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 10:28:13,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 10:28:13,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 10:28:13,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 10:28:13,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 10:28:13,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 10:28:13,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 10:28:13,169 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 10:28:13,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 10:28:13,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 10:28:13,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 10:28:13,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 10:28:13,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:28:13,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 10:28:13,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 10:28:13,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 10:28:13,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 10:28:13,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 10:28:13,171 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 10:28:13,171 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 10:28:13,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 10:28:13,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 10:28:13,173 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e59944759baac4a78b3b5460ff6f3a8abaec03123fb9537d86aeca785269fb41 [2021-11-06 10:28:13,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 10:28:13,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 10:28:13,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 10:28:13,396 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 10:28:13,397 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 10:28:13,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i [2021-11-06 10:28:13,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b97c1216/c1227984f0a4417d9d1e2d7e353bb935/FLAG8dac0682e [2021-11-06 10:28:14,109 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 10:28:14,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i [2021-11-06 10:28:14,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b97c1216/c1227984f0a4417d9d1e2d7e353bb935/FLAG8dac0682e [2021-11-06 10:28:14,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b97c1216/c1227984f0a4417d9d1e2d7e353bb935 [2021-11-06 10:28:14,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 10:28:14,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 10:28:14,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 10:28:14,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 10:28:14,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 10:28:14,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:14" (1/1) ... [2021-11-06 10:28:14,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@791e95e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:14, skipping insertion in model container [2021-11-06 10:28:14,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:14" (1/1) ... [2021-11-06 10:28:14,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 10:28:14,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 10:28:14,848 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i[4497,4510] [2021-11-06 10:28:14,855 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i[4557,4570] [2021-11-06 10:28:14,872 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:28:14,878 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:28:15,554 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:15,555 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:15,555 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:15,556 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:15,557 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:15,566 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:15,566 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:15,568 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:15,568 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:15,784 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:28:15,786 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:28:15,786 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:28:15,787 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:28:15,788 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:28:15,789 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:28:15,789 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:28:15,790 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:28:15,790 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:28:15,791 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:28:15,933 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:28:16,003 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:16,004 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:16,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:28:16,109 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 10:28:16,130 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i[4497,4510] [2021-11-06 10:28:16,132 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i[4557,4570] [2021-11-06 10:28:16,136 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:28:16,137 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:28:16,186 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:16,186 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:16,186 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:16,189 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:16,190 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:16,202 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:16,204 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:16,205 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:16,206 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:16,241 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:28:16,242 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:28:16,242 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:28:16,243 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:28:16,246 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:28:16,246 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:28:16,247 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:28:16,247 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:28:16,247 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:28:16,248 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:28:16,318 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:28:16,381 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:16,381 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:28:16,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:28:16,563 INFO L208 MainTranslator]: Completed translation [2021-11-06 10:28:16,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:16 WrapperNode [2021-11-06 10:28:16,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 10:28:16,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 10:28:16,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 10:28:16,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 10:28:16,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:16" (1/1) ... [2021-11-06 10:28:16,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:16" (1/1) ... [2021-11-06 10:28:16,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 10:28:16,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 10:28:16,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 10:28:16,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 10:28:16,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:16" (1/1) ... [2021-11-06 10:28:16,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:16" (1/1) ... [2021-11-06 10:28:16,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:16" (1/1) ... [2021-11-06 10:28:16,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:16" (1/1) ... [2021-11-06 10:28:16,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:16" (1/1) ... [2021-11-06 10:28:16,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:16" (1/1) ... [2021-11-06 10:28:16,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:16" (1/1) ... [2021-11-06 10:28:16,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 10:28:16,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 10:28:16,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 10:28:16,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 10:28:16,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:16" (1/1) ... [2021-11-06 10:28:16,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:28:16,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:28:16,912 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) [2021-11-06 10:28:16,939 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 [2021-11-06 10:28:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure htons [2021-11-06 10:28:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 10:28:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 10:28:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 10:28:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 10:28:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 10:28:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 10:28:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 10:28:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 10:28:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 10:28:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 10:28:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 10:28:25,877 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 10:28:25,877 INFO L299 CfgBuilder]: Removed 89 assume(true) statements. [2021-11-06 10:28:25,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:25 BoogieIcfgContainer [2021-11-06 10:28:25,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 10:28:25,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 10:28:25,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 10:28:25,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 10:28:25,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:28:14" (1/3) ... [2021-11-06 10:28:25,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c93ea77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:25, skipping insertion in model container [2021-11-06 10:28:25,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:16" (2/3) ... [2021-11-06 10:28:25,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c93ea77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:25, skipping insertion in model container [2021-11-06 10:28:25,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:25" (3/3) ... [2021-11-06 10:28:25,888 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be16_harness.i [2021-11-06 10:28:25,893 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 10:28:25,894 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-06 10:28:25,932 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 10:28:25,937 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 [2021-11-06 10:28:25,937 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-06 10:28:25,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 174 states have (on average 1.4827586206896552) internal successors, (258), 185 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:25,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-06 10:28:25,958 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:28:25,958 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:28:25,959 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:28:25,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:28:25,964 INFO L85 PathProgramCache]: Analyzing trace with hash 733514216, now seen corresponding path program 1 times [2021-11-06 10:28:25,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:28:25,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391686144] [2021-11-06 10:28:25,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:28:25,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:28:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:28:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:28:26,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:28:26,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391686144] [2021-11-06 10:28:26,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391686144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:28:26,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:28:26,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 10:28:26,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858684560] [2021-11-06 10:28:26,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 10:28:26,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:28:26,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 10:28:26,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:28:26,611 INFO L87 Difference]: Start difference. First operand has 186 states, 174 states have (on average 1.4827586206896552) internal successors, (258), 185 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:26,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:28:26,639 INFO L93 Difference]: Finished difference Result 368 states and 511 transitions. [2021-11-06 10:28:26,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 10:28:26,641 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-06 10:28:26,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:28:26,650 INFO L225 Difference]: With dead ends: 368 [2021-11-06 10:28:26,650 INFO L226 Difference]: Without dead ends: 181 [2021-11-06 10:28:26,652 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:28:26,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-06 10:28:26,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-06 10:28:26,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 170 states have (on average 1.3588235294117648) internal successors, (231), 180 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:26,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 231 transitions. [2021-11-06 10:28:26,693 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 231 transitions. Word has length 39 [2021-11-06 10:28:26,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:28:26,694 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 231 transitions. [2021-11-06 10:28:26,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:26,694 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 231 transitions. [2021-11-06 10:28:26,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-06 10:28:26,696 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:28:26,696 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:28:26,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 10:28:26,696 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:28:26,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:28:26,697 INFO L85 PathProgramCache]: Analyzing trace with hash 699508844, now seen corresponding path program 1 times [2021-11-06 10:28:26,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:28:26,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204613371] [2021-11-06 10:28:26,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:28:26,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:28:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:28:27,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:28:27,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:28:27,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204613371] [2021-11-06 10:28:27,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204613371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:28:27,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:28:27,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:28:27,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353375083] [2021-11-06 10:28:27,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:28:27,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:28:27,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:28:27,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:28:27,035 INFO L87 Difference]: Start difference. First operand 181 states and 231 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:27,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:28:27,281 INFO L93 Difference]: Finished difference Result 336 states and 428 transitions. [2021-11-06 10:28:27,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:28:27,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-06 10:28:27,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:28:27,283 INFO L225 Difference]: With dead ends: 336 [2021-11-06 10:28:27,283 INFO L226 Difference]: Without dead ends: 181 [2021-11-06 10:28:27,285 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:28:27,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-06 10:28:27,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-06 10:28:27,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 170 states have (on average 1.3411764705882352) internal successors, (228), 180 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:27,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 228 transitions. [2021-11-06 10:28:27,295 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 228 transitions. Word has length 39 [2021-11-06 10:28:27,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:28:27,299 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 228 transitions. [2021-11-06 10:28:27,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:27,300 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 228 transitions. [2021-11-06 10:28:27,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 10:28:27,302 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:28:27,302 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:28:27,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 10:28:27,303 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:28:27,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:28:27,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1277536330, now seen corresponding path program 1 times [2021-11-06 10:28:27,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:28:27,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89802670] [2021-11-06 10:28:27,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:28:27,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:28:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:28:27,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:28:27,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:28:27,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89802670] [2021-11-06 10:28:27,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89802670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:28:27,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:28:27,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:28:27,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191377065] [2021-11-06 10:28:27,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:28:27,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:28:27,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:28:27,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:28:27,584 INFO L87 Difference]: Start difference. First operand 181 states and 228 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:28,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:28:28,057 INFO L93 Difference]: Finished difference Result 397 states and 508 transitions. [2021-11-06 10:28:28,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:28:28,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-06 10:28:28,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:28:28,060 INFO L225 Difference]: With dead ends: 397 [2021-11-06 10:28:28,060 INFO L226 Difference]: Without dead ends: 241 [2021-11-06 10:28:28,061 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:28:28,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-06 10:28:28,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 193. [2021-11-06 10:28:28,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 182 states have (on average 1.3186813186813187) internal successors, (240), 192 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:28,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 240 transitions. [2021-11-06 10:28:28,072 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 240 transitions. Word has length 51 [2021-11-06 10:28:28,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:28:28,073 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 240 transitions. [2021-11-06 10:28:28,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:28,073 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 240 transitions. [2021-11-06 10:28:28,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 10:28:28,074 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:28:28,074 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:28:28,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 10:28:28,075 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:28:28,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:28:28,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1671903116, now seen corresponding path program 1 times [2021-11-06 10:28:28,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:28:28,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743857072] [2021-11-06 10:28:28,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:28:28,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:28:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:28:28,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:28:28,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:28:28,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743857072] [2021-11-06 10:28:28,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743857072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:28:28,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:28:28,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:28:28,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020586075] [2021-11-06 10:28:28,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:28:28,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:28:28,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:28:28,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:28:28,401 INFO L87 Difference]: Start difference. First operand 193 states and 240 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:28,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:28:28,675 INFO L93 Difference]: Finished difference Result 314 states and 387 transitions. [2021-11-06 10:28:28,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:28:28,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-06 10:28:28,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:28:28,677 INFO L225 Difference]: With dead ends: 314 [2021-11-06 10:28:28,677 INFO L226 Difference]: Without dead ends: 193 [2021-11-06 10:28:28,677 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:28:28,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-06 10:28:28,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-11-06 10:28:28,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 182 states have (on average 1.3131868131868132) internal successors, (239), 192 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:28,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 239 transitions. [2021-11-06 10:28:28,685 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 239 transitions. Word has length 51 [2021-11-06 10:28:28,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:28:28,685 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 239 transitions. [2021-11-06 10:28:28,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:28,686 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 239 transitions. [2021-11-06 10:28:28,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 10:28:28,687 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:28:28,687 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:28:28,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 10:28:28,687 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:28:28,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:28:28,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1284348023, now seen corresponding path program 1 times [2021-11-06 10:28:28,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:28:28,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559581509] [2021-11-06 10:28:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:28:28,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:28:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:28:29,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:28:29,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:28:29,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559581509] [2021-11-06 10:28:29,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559581509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:28:29,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:28:29,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:28:29,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928618927] [2021-11-06 10:28:29,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:28:29,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:28:29,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:28:29,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:28:29,092 INFO L87 Difference]: Start difference. First operand 193 states and 239 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:29,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:28:29,536 INFO L93 Difference]: Finished difference Result 265 states and 320 transitions. [2021-11-06 10:28:29,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 10:28:29,537 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-06 10:28:29,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:28:29,538 INFO L225 Difference]: With dead ends: 265 [2021-11-06 10:28:29,538 INFO L226 Difference]: Without dead ends: 193 [2021-11-06 10:28:29,539 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:28:29,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-06 10:28:29,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-11-06 10:28:29,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 182 states have (on average 1.3021978021978022) internal successors, (237), 192 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:29,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 237 transitions. [2021-11-06 10:28:29,545 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 237 transitions. Word has length 57 [2021-11-06 10:28:29,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:28:29,546 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 237 transitions. [2021-11-06 10:28:29,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:29,546 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 237 transitions. [2021-11-06 10:28:29,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-06 10:28:29,547 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:28:29,547 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:28:29,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 10:28:29,548 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:28:29,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:28:29,548 INFO L85 PathProgramCache]: Analyzing trace with hash 718341164, now seen corresponding path program 1 times [2021-11-06 10:28:29,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:28:29,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492390587] [2021-11-06 10:28:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:28:29,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:28:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:28:30,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:28:30,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:28:30,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492390587] [2021-11-06 10:28:30,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492390587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:28:30,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:28:30,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:28:30,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57536526] [2021-11-06 10:28:30,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:28:30,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:28:30,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:28:30,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:28:30,291 INFO L87 Difference]: Start difference. First operand 193 states and 237 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:31,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:28:31,137 INFO L93 Difference]: Finished difference Result 310 states and 367 transitions. [2021-11-06 10:28:31,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:28:31,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-06 10:28:31,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:28:31,140 INFO L225 Difference]: With dead ends: 310 [2021-11-06 10:28:31,140 INFO L226 Difference]: Without dead ends: 297 [2021-11-06 10:28:31,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:28:31,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-06 10:28:31,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 199. [2021-11-06 10:28:31,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 188 states have (on average 1.2872340425531914) internal successors, (242), 198 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:31,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 242 transitions. [2021-11-06 10:28:31,146 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 242 transitions. Word has length 63 [2021-11-06 10:28:31,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:28:31,146 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 242 transitions. [2021-11-06 10:28:31,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:31,147 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 242 transitions. [2021-11-06 10:28:31,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 10:28:31,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:28:31,148 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:28:31,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 10:28:31,148 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:28:31,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:28:31,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1235696670, now seen corresponding path program 1 times [2021-11-06 10:28:31,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:28:31,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503238498] [2021-11-06 10:28:31,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:28:31,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:28:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:28:31,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:28:31,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:28:31,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503238498] [2021-11-06 10:28:31,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503238498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:28:31,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:28:31,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:28:31,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719108755] [2021-11-06 10:28:31,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:28:31,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:28:31,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:28:31,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:28:31,807 INFO L87 Difference]: Start difference. First operand 199 states and 242 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:37,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:28:37,328 INFO L93 Difference]: Finished difference Result 595 states and 724 transitions. [2021-11-06 10:28:37,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:28:37,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-06 10:28:37,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:28:37,331 INFO L225 Difference]: With dead ends: 595 [2021-11-06 10:28:37,331 INFO L226 Difference]: Without dead ends: 418 [2021-11-06 10:28:37,332 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:28:37,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-11-06 10:28:37,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 239. [2021-11-06 10:28:37,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 228 states have (on average 1.2850877192982457) internal successors, (293), 238 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:37,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 293 transitions. [2021-11-06 10:28:37,341 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 293 transitions. Word has length 67 [2021-11-06 10:28:37,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:28:37,341 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 293 transitions. [2021-11-06 10:28:37,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:37,342 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 293 transitions. [2021-11-06 10:28:37,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 10:28:37,343 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:28:37,343 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:28:37,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 10:28:37,343 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:28:37,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:28:37,344 INFO L85 PathProgramCache]: Analyzing trace with hash -555638300, now seen corresponding path program 1 times [2021-11-06 10:28:37,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:28:37,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919773575] [2021-11-06 10:28:37,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:28:37,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:28:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:28:38,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:28:38,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:28:38,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919773575] [2021-11-06 10:28:38,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919773575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:28:38,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:28:38,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:28:38,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409204978] [2021-11-06 10:28:38,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:28:38,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:28:38,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:28:38,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:28:38,365 INFO L87 Difference]: Start difference. First operand 239 states and 293 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:43,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:28:43,956 INFO L93 Difference]: Finished difference Result 505 states and 610 transitions. [2021-11-06 10:28:43,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 10:28:43,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-06 10:28:43,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:28:43,959 INFO L225 Difference]: With dead ends: 505 [2021-11-06 10:28:43,959 INFO L226 Difference]: Without dead ends: 366 [2021-11-06 10:28:43,960 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:28:43,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-06 10:28:43,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 254. [2021-11-06 10:28:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 243 states have (on average 1.2798353909465021) internal successors, (311), 253 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:43,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 311 transitions. [2021-11-06 10:28:43,969 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 311 transitions. Word has length 67 [2021-11-06 10:28:43,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:28:43,969 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 311 transitions. [2021-11-06 10:28:43,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:43,970 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 311 transitions. [2021-11-06 10:28:43,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 10:28:43,971 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:28:43,971 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:28:43,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 10:28:43,971 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:28:43,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:28:43,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2143986202, now seen corresponding path program 1 times [2021-11-06 10:28:43,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:28:43,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845336145] [2021-11-06 10:28:43,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:28:43,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:28:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:28:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:28:45,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:28:45,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845336145] [2021-11-06 10:28:45,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845336145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:28:45,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:28:45,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:28:45,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701221166] [2021-11-06 10:28:45,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:28:45,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:28:45,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:28:45,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:28:45,074 INFO L87 Difference]: Start difference. First operand 254 states and 311 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:56,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:28:56,021 INFO L93 Difference]: Finished difference Result 455 states and 547 transitions. [2021-11-06 10:28:56,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 10:28:56,022 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-06 10:28:56,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:28:56,023 INFO L225 Difference]: With dead ends: 455 [2021-11-06 10:28:56,023 INFO L226 Difference]: Without dead ends: 377 [2021-11-06 10:28:56,024 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:28:56,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-06 10:28:56,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 259. [2021-11-06 10:28:56,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 248 states have (on average 1.282258064516129) internal successors, (318), 258 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:56,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 318 transitions. [2021-11-06 10:28:56,040 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 318 transitions. Word has length 67 [2021-11-06 10:28:56,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:28:56,040 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 318 transitions. [2021-11-06 10:28:56,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:28:56,041 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 318 transitions. [2021-11-06 10:28:56,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 10:28:56,046 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:28:56,046 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:28:56,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 10:28:56,046 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:28:56,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:28:56,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1892815656, now seen corresponding path program 1 times [2021-11-06 10:28:56,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:28:56,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295513196] [2021-11-06 10:28:56,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:28:56,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:28:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:28:59,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:28:59,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:28:59,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295513196] [2021-11-06 10:28:59,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295513196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:28:59,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:28:59,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:28:59,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282369633] [2021-11-06 10:28:59,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:28:59,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:28:59,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:28:59,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:28:59,979 INFO L87 Difference]: Start difference. First operand 259 states and 318 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:11,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:11,146 INFO L93 Difference]: Finished difference Result 493 states and 593 transitions. [2021-11-06 10:29:11,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 10:29:11,146 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-06 10:29:11,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:11,148 INFO L225 Difference]: With dead ends: 493 [2021-11-06 10:29:11,148 INFO L226 Difference]: Without dead ends: 402 [2021-11-06 10:29:11,149 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-11-06 10:29:11,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-11-06 10:29:11,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 294. [2021-11-06 10:29:11,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 283 states have (on average 1.2720848056537102) internal successors, (360), 293 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:11,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 360 transitions. [2021-11-06 10:29:11,159 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 360 transitions. Word has length 67 [2021-11-06 10:29:11,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:11,159 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 360 transitions. [2021-11-06 10:29:11,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:11,159 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 360 transitions. [2021-11-06 10:29:11,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 10:29:11,160 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:11,160 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:29:11,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 10:29:11,161 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:29:11,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:11,161 INFO L85 PathProgramCache]: Analyzing trace with hash 459805474, now seen corresponding path program 1 times [2021-11-06 10:29:11,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:11,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656662715] [2021-11-06 10:29:11,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:11,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:12,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:12,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:12,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656662715] [2021-11-06 10:29:12,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656662715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:12,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:12,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:29:12,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95057059] [2021-11-06 10:29:12,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:29:12,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:12,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:29:12,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:29:12,274 INFO L87 Difference]: Start difference. First operand 294 states and 360 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:19,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:19,107 INFO L93 Difference]: Finished difference Result 567 states and 683 transitions. [2021-11-06 10:29:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 10:29:19,111 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-06 10:29:19,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:19,112 INFO L225 Difference]: With dead ends: 567 [2021-11-06 10:29:19,112 INFO L226 Difference]: Without dead ends: 421 [2021-11-06 10:29:19,113 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-11-06 10:29:19,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-06 10:29:19,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 306. [2021-11-06 10:29:19,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 295 states have (on average 1.271186440677966) internal successors, (375), 305 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:19,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 375 transitions. [2021-11-06 10:29:19,124 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 375 transitions. Word has length 67 [2021-11-06 10:29:19,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:19,124 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 375 transitions. [2021-11-06 10:29:19,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:19,124 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 375 transitions. [2021-11-06 10:29:19,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 10:29:19,125 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:19,125 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:29:19,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 10:29:19,126 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:29:19,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:19,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1139863844, now seen corresponding path program 1 times [2021-11-06 10:29:19,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:19,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892011539] [2021-11-06 10:29:19,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:19,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:19,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:19,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:19,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892011539] [2021-11-06 10:29:19,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892011539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:19,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:19,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:29:19,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776090246] [2021-11-06 10:29:19,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:29:19,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:19,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:29:19,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:29:19,640 INFO L87 Difference]: Start difference. First operand 306 states and 375 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:25,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:25,052 INFO L93 Difference]: Finished difference Result 749 states and 903 transitions. [2021-11-06 10:29:25,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:29:25,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-06 10:29:25,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:25,055 INFO L225 Difference]: With dead ends: 749 [2021-11-06 10:29:25,055 INFO L226 Difference]: Without dead ends: 472 [2021-11-06 10:29:25,056 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:29:25,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-11-06 10:29:25,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 306. [2021-11-06 10:29:25,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 295 states have (on average 1.240677966101695) internal successors, (366), 305 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:25,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 366 transitions. [2021-11-06 10:29:25,067 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 366 transitions. Word has length 67 [2021-11-06 10:29:25,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:25,068 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 366 transitions. [2021-11-06 10:29:25,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:25,068 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 366 transitions. [2021-11-06 10:29:25,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 10:29:25,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:25,069 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:29:25,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 10:29:25,069 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:29:25,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:25,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1970832183, now seen corresponding path program 1 times [2021-11-06 10:29:25,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:25,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721590657] [2021-11-06 10:29:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:25,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:25,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:25,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:25,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721590657] [2021-11-06 10:29:25,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721590657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:25,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:25,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:29:25,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90751247] [2021-11-06 10:29:25,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:29:25,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:25,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:29:25,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:29:25,407 INFO L87 Difference]: Start difference. First operand 306 states and 366 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:25,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:25,545 INFO L93 Difference]: Finished difference Result 393 states and 465 transitions. [2021-11-06 10:29:25,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:29:25,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-06 10:29:25,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:25,547 INFO L225 Difference]: With dead ends: 393 [2021-11-06 10:29:25,547 INFO L226 Difference]: Without dead ends: 357 [2021-11-06 10:29:25,548 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:29:25,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-06 10:29:25,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 309. [2021-11-06 10:29:25,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 298 states have (on average 1.238255033557047) internal successors, (369), 308 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:25,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 369 transitions. [2021-11-06 10:29:25,558 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 369 transitions. Word has length 68 [2021-11-06 10:29:25,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:25,558 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 369 transitions. [2021-11-06 10:29:25,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:25,559 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 369 transitions. [2021-11-06 10:29:25,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 10:29:25,559 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:25,560 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:29:25,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 10:29:25,560 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:29:25,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:25,561 INFO L85 PathProgramCache]: Analyzing trace with hash -965360329, now seen corresponding path program 1 times [2021-11-06 10:29:25,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:25,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036143873] [2021-11-06 10:29:25,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:25,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:26,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:26,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036143873] [2021-11-06 10:29:26,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036143873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:26,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:26,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:29:26,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943372493] [2021-11-06 10:29:26,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:29:26,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:26,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:29:26,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:29:26,148 INFO L87 Difference]: Start difference. First operand 309 states and 369 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:26,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:26,581 INFO L93 Difference]: Finished difference Result 333 states and 397 transitions. [2021-11-06 10:29:26,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:29:26,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-06 10:29:26,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:26,583 INFO L225 Difference]: With dead ends: 333 [2021-11-06 10:29:26,583 INFO L226 Difference]: Without dead ends: 331 [2021-11-06 10:29:26,584 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:29:26,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-11-06 10:29:26,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 307. [2021-11-06 10:29:26,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 297 states have (on average 1.2356902356902357) internal successors, (367), 306 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:26,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 367 transitions. [2021-11-06 10:29:26,595 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 367 transitions. Word has length 69 [2021-11-06 10:29:26,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:26,596 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 367 transitions. [2021-11-06 10:29:26,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:26,596 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 367 transitions. [2021-11-06 10:29:26,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 10:29:26,597 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:26,597 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:29:26,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 10:29:26,598 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:29:26,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:26,598 INFO L85 PathProgramCache]: Analyzing trace with hash 608522333, now seen corresponding path program 1 times [2021-11-06 10:29:26,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:26,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049931511] [2021-11-06 10:29:26,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:26,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:27,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:27,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049931511] [2021-11-06 10:29:27,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049931511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:27,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:27,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:29:27,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907288840] [2021-11-06 10:29:27,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:29:27,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:27,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:29:27,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:29:27,206 INFO L87 Difference]: Start difference. First operand 307 states and 367 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:28,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:28,903 INFO L93 Difference]: Finished difference Result 457 states and 530 transitions. [2021-11-06 10:29:28,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 10:29:28,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-06 10:29:28,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:28,905 INFO L225 Difference]: With dead ends: 457 [2021-11-06 10:29:28,906 INFO L226 Difference]: Without dead ends: 440 [2021-11-06 10:29:28,906 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:29:28,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-06 10:29:28,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 311. [2021-11-06 10:29:28,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 301 states have (on average 1.2292358803986712) internal successors, (370), 310 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:28,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 370 transitions. [2021-11-06 10:29:28,920 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 370 transitions. Word has length 69 [2021-11-06 10:29:28,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:28,920 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 370 transitions. [2021-11-06 10:29:28,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:28,921 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 370 transitions. [2021-11-06 10:29:28,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 10:29:28,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:28,921 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:29:28,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 10:29:28,922 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:29:28,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:28,922 INFO L85 PathProgramCache]: Analyzing trace with hash -200824293, now seen corresponding path program 1 times [2021-11-06 10:29:28,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:28,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072878928] [2021-11-06 10:29:28,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:28,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:30,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:30,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072878928] [2021-11-06 10:29:30,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072878928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:30,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:30,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:29:30,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23245388] [2021-11-06 10:29:30,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:29:30,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:30,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:29:30,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:29:30,045 INFO L87 Difference]: Start difference. First operand 311 states and 370 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:46,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:29:46,483 INFO L93 Difference]: Finished difference Result 820 states and 958 transitions. [2021-11-06 10:29:46,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-06 10:29:46,484 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-06 10:29:46,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:29:46,486 INFO L225 Difference]: With dead ends: 820 [2021-11-06 10:29:46,486 INFO L226 Difference]: Without dead ends: 539 [2021-11-06 10:29:46,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2021-11-06 10:29:46,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-11-06 10:29:46,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 346. [2021-11-06 10:29:46,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 336 states have (on average 1.2291666666666667) internal successors, (413), 345 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:46,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 413 transitions. [2021-11-06 10:29:46,501 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 413 transitions. Word has length 69 [2021-11-06 10:29:46,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:29:46,501 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 413 transitions. [2021-11-06 10:29:46,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:29:46,502 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 413 transitions. [2021-11-06 10:29:46,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-06 10:29:46,503 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:29:46,503 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:29:46,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 10:29:46,503 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:29:46,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:29:46,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1798297, now seen corresponding path program 1 times [2021-11-06 10:29:46,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:29:46,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072072482] [2021-11-06 10:29:46,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:29:46,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:29:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:29:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:29:49,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:29:49,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072072482] [2021-11-06 10:29:49,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072072482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:29:49,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:29:49,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:29:49,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694369441] [2021-11-06 10:29:49,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:29:49,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:29:49,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:29:49,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:29:49,820 INFO L87 Difference]: Start difference. First operand 346 states and 413 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:02,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:30:02,355 INFO L93 Difference]: Finished difference Result 608 states and 723 transitions. [2021-11-06 10:30:02,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 10:30:02,356 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-06 10:30:02,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:30:02,358 INFO L225 Difference]: With dead ends: 608 [2021-11-06 10:30:02,358 INFO L226 Difference]: Without dead ends: 606 [2021-11-06 10:30:02,358 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-11-06 10:30:02,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-11-06 10:30:02,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 516. [2021-11-06 10:30:02,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 506 states have (on average 1.2292490118577075) internal successors, (622), 515 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:02,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 622 transitions. [2021-11-06 10:30:02,376 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 622 transitions. Word has length 71 [2021-11-06 10:30:02,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:30:02,376 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 622 transitions. [2021-11-06 10:30:02,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:02,377 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 622 transitions. [2021-11-06 10:30:02,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-06 10:30:02,378 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:30:02,378 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:30:02,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 10:30:02,379 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:30:02,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:30:02,379 INFO L85 PathProgramCache]: Analyzing trace with hash -587952146, now seen corresponding path program 1 times [2021-11-06 10:30:02,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:30:02,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594570211] [2021-11-06 10:30:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:30:02,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:30:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:30:03,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:30:03,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:30:03,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594570211] [2021-11-06 10:30:03,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594570211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:30:03,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:30:03,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:30:03,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913655613] [2021-11-06 10:30:03,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:30:03,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:30:03,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:30:03,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:30:03,045 INFO L87 Difference]: Start difference. First operand 516 states and 622 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:04,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:30:04,030 INFO L93 Difference]: Finished difference Result 1103 states and 1311 transitions. [2021-11-06 10:30:04,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 10:30:04,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-06 10:30:04,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:30:04,033 INFO L225 Difference]: With dead ends: 1103 [2021-11-06 10:30:04,033 INFO L226 Difference]: Without dead ends: 593 [2021-11-06 10:30:04,034 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:30:04,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-11-06 10:30:04,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 512. [2021-11-06 10:30:04,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 502 states have (on average 1.207171314741036) internal successors, (606), 511 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:04,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 606 transitions. [2021-11-06 10:30:04,051 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 606 transitions. Word has length 71 [2021-11-06 10:30:04,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:30:04,052 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 606 transitions. [2021-11-06 10:30:04,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:04,052 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 606 transitions. [2021-11-06 10:30:04,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 10:30:04,053 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:30:04,054 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:30:04,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 10:30:04,054 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:30:04,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:30:04,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1728302235, now seen corresponding path program 1 times [2021-11-06 10:30:04,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:30:04,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687275511] [2021-11-06 10:30:04,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:30:04,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:30:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:30:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:30:10,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:30:10,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687275511] [2021-11-06 10:30:10,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687275511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:30:10,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:30:10,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:30:10,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894615707] [2021-11-06 10:30:10,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:30:10,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:30:10,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:30:10,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:30:10,039 INFO L87 Difference]: Start difference. First operand 512 states and 606 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:13,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:30:13,384 INFO L93 Difference]: Finished difference Result 1053 states and 1239 transitions. [2021-11-06 10:30:13,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:30:13,384 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-06 10:30:13,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:30:13,386 INFO L225 Difference]: With dead ends: 1053 [2021-11-06 10:30:13,386 INFO L226 Difference]: Without dead ends: 578 [2021-11-06 10:30:13,387 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:30:13,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-11-06 10:30:13,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 504. [2021-11-06 10:30:13,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 494 states have (on average 1.2024291497975708) internal successors, (594), 503 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:13,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 594 transitions. [2021-11-06 10:30:13,404 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 594 transitions. Word has length 73 [2021-11-06 10:30:13,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:30:13,404 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 594 transitions. [2021-11-06 10:30:13,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:13,404 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 594 transitions. [2021-11-06 10:30:13,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 10:30:13,405 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:30:13,406 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:30:13,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 10:30:13,406 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:30:13,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:30:13,407 INFO L85 PathProgramCache]: Analyzing trace with hash -869292575, now seen corresponding path program 1 times [2021-11-06 10:30:13,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:30:13,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87345079] [2021-11-06 10:30:13,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:30:13,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:30:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:30:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:30:13,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:30:13,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87345079] [2021-11-06 10:30:13,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87345079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:30:13,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:30:13,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:30:13,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266103818] [2021-11-06 10:30:13,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:30:13,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:30:13,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:30:13,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:30:13,598 INFO L87 Difference]: Start difference. First operand 504 states and 594 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:13,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:30:13,960 INFO L93 Difference]: Finished difference Result 965 states and 1132 transitions. [2021-11-06 10:30:13,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:30:13,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-06 10:30:13,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:30:13,963 INFO L225 Difference]: With dead ends: 965 [2021-11-06 10:30:13,963 INFO L226 Difference]: Without dead ends: 456 [2021-11-06 10:30:13,964 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:30:13,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-06 10:30:13,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 432. [2021-11-06 10:30:13,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 422 states have (on average 1.1872037914691944) internal successors, (501), 431 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:13,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 501 transitions. [2021-11-06 10:30:13,978 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 501 transitions. Word has length 80 [2021-11-06 10:30:13,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:30:13,978 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 501 transitions. [2021-11-06 10:30:13,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:13,979 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 501 transitions. [2021-11-06 10:30:13,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 10:30:13,980 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:30:13,980 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:30:13,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 10:30:13,980 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:30:13,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:30:13,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1530248741, now seen corresponding path program 1 times [2021-11-06 10:30:13,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:30:13,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012518187] [2021-11-06 10:30:13,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:30:13,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:30:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:30:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:30:14,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:30:14,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012518187] [2021-11-06 10:30:14,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012518187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:30:14,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:30:14,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:30:14,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605347494] [2021-11-06 10:30:14,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:30:14,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:30:14,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:30:14,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:30:14,908 INFO L87 Difference]: Start difference. First operand 432 states and 501 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:20,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:30:20,600 INFO L93 Difference]: Finished difference Result 999 states and 1152 transitions. [2021-11-06 10:30:20,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:30:20,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-06 10:30:20,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:30:20,603 INFO L225 Difference]: With dead ends: 999 [2021-11-06 10:30:20,604 INFO L226 Difference]: Without dead ends: 729 [2021-11-06 10:30:20,604 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:30:20,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-11-06 10:30:20,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 440. [2021-11-06 10:30:20,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 430 states have (on average 1.1837209302325582) internal successors, (509), 439 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:20,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 509 transitions. [2021-11-06 10:30:20,623 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 509 transitions. Word has length 80 [2021-11-06 10:30:20,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:30:20,623 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 509 transitions. [2021-11-06 10:30:20,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:20,624 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 509 transitions. [2021-11-06 10:30:20,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 10:30:20,625 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:30:20,625 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:30:20,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 10:30:20,625 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:30:20,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:30:20,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2090948519, now seen corresponding path program 1 times [2021-11-06 10:30:20,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:30:20,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755379767] [2021-11-06 10:30:20,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:30:20,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:30:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:30:25,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:30:25,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:30:25,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755379767] [2021-11-06 10:30:25,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755379767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:30:25,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:30:25,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:30:25,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660832055] [2021-11-06 10:30:25,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:30:25,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:30:25,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:30:25,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:30:25,593 INFO L87 Difference]: Start difference. First operand 440 states and 509 transitions. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:42,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:30:42,519 INFO L93 Difference]: Finished difference Result 898 states and 1037 transitions. [2021-11-06 10:30:42,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-06 10:30:42,520 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-06 10:30:42,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:30:42,522 INFO L225 Difference]: With dead ends: 898 [2021-11-06 10:30:42,522 INFO L226 Difference]: Without dead ends: 848 [2021-11-06 10:30:42,523 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2021-11-06 10:30:42,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2021-11-06 10:30:42,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 633. [2021-11-06 10:30:42,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 623 states have (on average 1.1829855537720706) internal successors, (737), 632 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:42,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 737 transitions. [2021-11-06 10:30:42,548 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 737 transitions. Word has length 80 [2021-11-06 10:30:42,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:30:42,548 INFO L470 AbstractCegarLoop]: Abstraction has 633 states and 737 transitions. [2021-11-06 10:30:42,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:42,548 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 737 transitions. [2021-11-06 10:30:42,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 10:30:42,550 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:30:42,550 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:30:42,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-06 10:30:42,551 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:30:42,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:30:42,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1700948645, now seen corresponding path program 1 times [2021-11-06 10:30:42,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:30:42,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472578482] [2021-11-06 10:30:42,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:30:42,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:30:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:30:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:30:42,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:30:42,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472578482] [2021-11-06 10:30:42,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472578482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:30:42,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:30:42,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:30:42,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010615353] [2021-11-06 10:30:42,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:30:42,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:30:42,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:30:42,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:30:42,796 INFO L87 Difference]: Start difference. First operand 633 states and 737 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:43,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:30:43,177 INFO L93 Difference]: Finished difference Result 1218 states and 1405 transitions. [2021-11-06 10:30:43,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:30:43,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-06 10:30:43,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:30:43,179 INFO L225 Difference]: With dead ends: 1218 [2021-11-06 10:30:43,179 INFO L226 Difference]: Without dead ends: 602 [2021-11-06 10:30:43,180 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:30:43,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-06 10:30:43,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 532. [2021-11-06 10:30:43,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 522 states have (on average 1.1494252873563218) internal successors, (600), 531 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:43,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 600 transitions. [2021-11-06 10:30:43,202 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 600 transitions. Word has length 82 [2021-11-06 10:30:43,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:30:43,203 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 600 transitions. [2021-11-06 10:30:43,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:43,203 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 600 transitions. [2021-11-06 10:30:43,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 10:30:43,204 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:30:43,204 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:30:43,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-06 10:30:43,205 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:30:43,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:30:43,205 INFO L85 PathProgramCache]: Analyzing trace with hash -819891869, now seen corresponding path program 1 times [2021-11-06 10:30:43,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:30:43,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559182538] [2021-11-06 10:30:43,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:30:43,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:30:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:30:44,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:30:44,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:30:44,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559182538] [2021-11-06 10:30:44,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559182538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:30:44,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:30:44,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:30:44,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178778498] [2021-11-06 10:30:44,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:30:44,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:30:44,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:30:44,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:30:44,367 INFO L87 Difference]: Start difference. First operand 532 states and 600 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:48,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:30:48,288 INFO L93 Difference]: Finished difference Result 1042 states and 1184 transitions. [2021-11-06 10:30:48,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 10:30:48,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-06 10:30:48,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:30:48,291 INFO L225 Difference]: With dead ends: 1042 [2021-11-06 10:30:48,291 INFO L226 Difference]: Without dead ends: 773 [2021-11-06 10:30:48,292 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:30:48,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2021-11-06 10:30:48,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 562. [2021-11-06 10:30:48,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 552 states have (on average 1.141304347826087) internal successors, (630), 561 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:48,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 630 transitions. [2021-11-06 10:30:48,315 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 630 transitions. Word has length 82 [2021-11-06 10:30:48,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:30:48,316 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 630 transitions. [2021-11-06 10:30:48,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:48,316 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 630 transitions. [2021-11-06 10:30:48,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 10:30:48,317 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:30:48,318 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:30:48,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-06 10:30:48,318 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:30:48,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:30:48,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1886727525, now seen corresponding path program 1 times [2021-11-06 10:30:48,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:30:48,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189472516] [2021-11-06 10:30:48,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:30:48,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:30:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:30:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:30:49,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:30:49,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189472516] [2021-11-06 10:30:49,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189472516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:30:49,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:30:49,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:30:49,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50277766] [2021-11-06 10:30:49,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:30:49,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:30:49,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:30:49,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:30:49,478 INFO L87 Difference]: Start difference. First operand 562 states and 630 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:56,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:30:56,399 INFO L93 Difference]: Finished difference Result 885 states and 991 transitions. [2021-11-06 10:30:56,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 10:30:56,400 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-06 10:30:56,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:30:56,402 INFO L225 Difference]: With dead ends: 885 [2021-11-06 10:30:56,402 INFO L226 Difference]: Without dead ends: 788 [2021-11-06 10:30:56,403 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-11-06 10:30:56,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-11-06 10:30:56,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 577. [2021-11-06 10:30:56,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 567 states have (on average 1.1481481481481481) internal successors, (651), 576 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:56,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 651 transitions. [2021-11-06 10:30:56,430 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 651 transitions. Word has length 82 [2021-11-06 10:30:56,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:30:56,430 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 651 transitions. [2021-11-06 10:30:56,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:30:56,430 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 651 transitions. [2021-11-06 10:30:56,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 10:30:56,432 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:30:56,432 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:30:56,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-06 10:30:56,433 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:30:56,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:30:56,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1628562087, now seen corresponding path program 1 times [2021-11-06 10:30:56,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:30:56,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886224760] [2021-11-06 10:30:56,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:30:56,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:30:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:31:00,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:31:00,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:31:00,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886224760] [2021-11-06 10:31:00,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886224760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:31:00,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:31:00,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-06 10:31:00,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317939850] [2021-11-06 10:31:00,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-06 10:31:00,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:31:00,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-06 10:31:00,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-11-06 10:31:00,045 INFO L87 Difference]: Start difference. First operand 577 states and 651 transitions. Second operand has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 18 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:22,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:31:22,815 INFO L93 Difference]: Finished difference Result 957 states and 1064 transitions. [2021-11-06 10:31:22,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-06 10:31:22,815 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 18 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-06 10:31:22,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:31:22,817 INFO L225 Difference]: With dead ends: 957 [2021-11-06 10:31:22,817 INFO L226 Difference]: Without dead ends: 858 [2021-11-06 10:31:22,818 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=391, Invalid=1771, Unknown=0, NotChecked=0, Total=2162 [2021-11-06 10:31:22,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2021-11-06 10:31:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 575. [2021-11-06 10:31:22,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 565 states have (on average 1.1486725663716815) internal successors, (649), 574 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:22,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 649 transitions. [2021-11-06 10:31:22,841 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 649 transitions. Word has length 82 [2021-11-06 10:31:22,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:31:22,842 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 649 transitions. [2021-11-06 10:31:22,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 18 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:22,842 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 649 transitions. [2021-11-06 10:31:22,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 10:31:22,843 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:31:22,843 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:31:22,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-06 10:31:22,844 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:31:22,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:31:22,844 INFO L85 PathProgramCache]: Analyzing trace with hash 195551905, now seen corresponding path program 1 times [2021-11-06 10:31:22,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:31:22,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446064534] [2021-11-06 10:31:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:31:22,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:31:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:31:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:31:23,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:31:23,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446064534] [2021-11-06 10:31:23,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446064534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:31:23,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:31:23,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:31:23,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052697442] [2021-11-06 10:31:23,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:31:23,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:31:23,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:31:23,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:31:23,714 INFO L87 Difference]: Start difference. First operand 575 states and 649 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:30,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:31:30,308 INFO L93 Difference]: Finished difference Result 846 states and 947 transitions. [2021-11-06 10:31:30,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:31:30,308 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-06 10:31:30,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:31:30,310 INFO L225 Difference]: With dead ends: 846 [2021-11-06 10:31:30,310 INFO L226 Difference]: Without dead ends: 764 [2021-11-06 10:31:30,311 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:31:30,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-11-06 10:31:30,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 596. [2021-11-06 10:31:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 586 states have (on average 1.1433447098976108) internal successors, (670), 595 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:30,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 670 transitions. [2021-11-06 10:31:30,340 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 670 transitions. Word has length 82 [2021-11-06 10:31:30,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:31:30,341 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 670 transitions. [2021-11-06 10:31:30,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:30,341 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 670 transitions. [2021-11-06 10:31:30,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 10:31:30,342 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:31:30,342 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:31:30,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-06 10:31:30,343 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:31:30,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:31:30,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1103336165, now seen corresponding path program 1 times [2021-11-06 10:31:30,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:31:30,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479229743] [2021-11-06 10:31:30,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:31:30,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:31:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:31:31,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:31:31,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:31:31,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479229743] [2021-11-06 10:31:31,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479229743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:31:31,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:31:31,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:31:31,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033807129] [2021-11-06 10:31:31,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:31:31,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:31:31,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:31:31,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:31:31,487 INFO L87 Difference]: Start difference. First operand 596 states and 670 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:46,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:31:46,380 INFO L93 Difference]: Finished difference Result 742 states and 826 transitions. [2021-11-06 10:31:46,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 10:31:46,380 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-06 10:31:46,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:31:46,382 INFO L225 Difference]: With dead ends: 742 [2021-11-06 10:31:46,382 INFO L226 Difference]: Without dead ends: 602 [2021-11-06 10:31:46,382 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-11-06 10:31:46,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-06 10:31:46,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 562. [2021-11-06 10:31:46,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 552 states have (on average 1.1358695652173914) internal successors, (627), 561 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:46,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 627 transitions. [2021-11-06 10:31:46,405 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 627 transitions. Word has length 82 [2021-11-06 10:31:46,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:31:46,406 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 627 transitions. [2021-11-06 10:31:46,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:31:46,406 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 627 transitions. [2021-11-06 10:31:46,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 10:31:46,407 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:31:46,407 INFO L513 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] [2021-11-06 10:31:46,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-06 10:31:46,408 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:31:46,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:31:46,408 INFO L85 PathProgramCache]: Analyzing trace with hash -745433638, now seen corresponding path program 1 times [2021-11-06 10:31:46,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:31:46,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200419135] [2021-11-06 10:31:46,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:31:46,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:31:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:31:47,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:31:47,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:31:47,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200419135] [2021-11-06 10:31:47,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200419135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:31:47,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:31:47,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:31:47,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853103182] [2021-11-06 10:31:47,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:31:47,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:31:47,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:31:47,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:31:47,845 INFO L87 Difference]: Start difference. First operand 562 states and 627 transitions. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:02,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:32:02,246 INFO L93 Difference]: Finished difference Result 671 states and 742 transitions. [2021-11-06 10:32:02,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-06 10:32:02,246 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-06 10:32:02,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:32:02,248 INFO L225 Difference]: With dead ends: 671 [2021-11-06 10:32:02,249 INFO L226 Difference]: Without dead ends: 632 [2021-11-06 10:32:02,249 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2021-11-06 10:32:02,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-06 10:32:02,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 546. [2021-11-06 10:32:02,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 536 states have (on average 1.1361940298507462) internal successors, (609), 545 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:02,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 609 transitions. [2021-11-06 10:32:02,274 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 609 transitions. Word has length 84 [2021-11-06 10:32:02,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:32:02,275 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 609 transitions. [2021-11-06 10:32:02,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:02,275 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 609 transitions. [2021-11-06 10:32:02,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 10:32:02,276 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:32:02,277 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:32:02,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-06 10:32:02,277 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:32:02,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:32:02,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1191985021, now seen corresponding path program 1 times [2021-11-06 10:32:02,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:32:02,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316947122] [2021-11-06 10:32:02,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:32:02,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:32:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:32:05,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:32:05,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:32:05,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316947122] [2021-11-06 10:32:05,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316947122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:32:05,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:32:05,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-06 10:32:05,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805065280] [2021-11-06 10:32:05,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-06 10:32:05,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:32:05,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-06 10:32:05,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-11-06 10:32:05,321 INFO L87 Difference]: Start difference. First operand 546 states and 609 transitions. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:31,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:32:31,040 INFO L93 Difference]: Finished difference Result 926 states and 1023 transitions. [2021-11-06 10:32:31,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-06 10:32:31,040 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 10:32:31,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:32:31,042 INFO L225 Difference]: With dead ends: 926 [2021-11-06 10:32:31,043 INFO L226 Difference]: Without dead ends: 876 [2021-11-06 10:32:31,043 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=285, Invalid=1121, Unknown=0, NotChecked=0, Total=1406 [2021-11-06 10:32:31,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-11-06 10:32:31,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 652. [2021-11-06 10:32:31,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 642 states have (on average 1.1370716510903427) internal successors, (730), 651 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 730 transitions. [2021-11-06 10:32:31,068 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 730 transitions. Word has length 85 [2021-11-06 10:32:31,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:32:31,068 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 730 transitions. [2021-11-06 10:32:31,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:31,068 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 730 transitions. [2021-11-06 10:32:31,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 10:32:31,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:32:31,069 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:32:31,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-06 10:32:31,070 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:32:31,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:32:31,070 INFO L85 PathProgramCache]: Analyzing trace with hash -831391237, now seen corresponding path program 1 times [2021-11-06 10:32:31,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:32:31,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511576481] [2021-11-06 10:32:31,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:32:31,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:32:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:32:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:32:32,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:32:32,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511576481] [2021-11-06 10:32:32,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511576481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:32:32,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:32:32,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:32:32,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468413155] [2021-11-06 10:32:32,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:32:32,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:32:32,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:32:32,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:32:32,509 INFO L87 Difference]: Start difference. First operand 652 states and 730 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:43,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:32:43,955 INFO L93 Difference]: Finished difference Result 837 states and 926 transitions. [2021-11-06 10:32:43,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-06 10:32:43,956 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 10:32:43,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:32:43,957 INFO L225 Difference]: With dead ends: 837 [2021-11-06 10:32:43,957 INFO L226 Difference]: Without dead ends: 619 [2021-11-06 10:32:43,958 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-11-06 10:32:43,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-11-06 10:32:43,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 557. [2021-11-06 10:32:43,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 547 states have (on average 1.13345521023766) internal successors, (620), 556 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:43,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 620 transitions. [2021-11-06 10:32:43,981 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 620 transitions. Word has length 85 [2021-11-06 10:32:43,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:32:43,982 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 620 transitions. [2021-11-06 10:32:43,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:32:43,982 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 620 transitions. [2021-11-06 10:32:43,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 10:32:43,983 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:32:43,983 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:32:43,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-06 10:32:43,984 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:32:43,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:32:43,984 INFO L85 PathProgramCache]: Analyzing trace with hash 298498683, now seen corresponding path program 1 times [2021-11-06 10:32:43,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:32:43,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301168671] [2021-11-06 10:32:43,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:32:43,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:32:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:32:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:32:50,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:32:50,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301168671] [2021-11-06 10:32:50,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301168671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:32:50,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:32:50,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-06 10:32:50,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381487714] [2021-11-06 10:32:50,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 10:32:50,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:32:50,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 10:32:50,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:32:50,794 INFO L87 Difference]: Start difference. First operand 557 states and 620 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:33:12,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:33:12,386 INFO L93 Difference]: Finished difference Result 825 states and 913 transitions. [2021-11-06 10:33:12,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-06 10:33:12,387 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 10:33:12,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:33:12,388 INFO L225 Difference]: With dead ends: 825 [2021-11-06 10:33:12,389 INFO L226 Difference]: Without dead ends: 599 [2021-11-06 10:33:12,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2021-11-06 10:33:12,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-11-06 10:33:12,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 472. [2021-11-06 10:33:12,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 462 states have (on average 1.1233766233766234) internal successors, (519), 471 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:33:12,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 519 transitions. [2021-11-06 10:33:12,412 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 519 transitions. Word has length 85 [2021-11-06 10:33:12,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:33:12,412 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 519 transitions. [2021-11-06 10:33:12,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:33:12,412 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 519 transitions. [2021-11-06 10:33:12,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 10:33:12,413 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:33:12,413 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:33:12,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-06 10:33:12,413 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:33:12,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:33:12,414 INFO L85 PathProgramCache]: Analyzing trace with hash 353688179, now seen corresponding path program 1 times [2021-11-06 10:33:12,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:33:12,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7575674] [2021-11-06 10:33:12,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:33:12,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:33:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:33:14,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:33:14,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:33:14,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7575674] [2021-11-06 10:33:14,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7575674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:33:14,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:33:14,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 10:33:14,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313243489] [2021-11-06 10:33:14,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 10:33:14,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:33:14,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 10:33:14,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:33:14,026 INFO L87 Difference]: Start difference. First operand 472 states and 519 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:33:29,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:33:29,160 INFO L93 Difference]: Finished difference Result 768 states and 844 transitions. [2021-11-06 10:33:29,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 10:33:29,161 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 10:33:29,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:33:29,162 INFO L225 Difference]: With dead ends: 768 [2021-11-06 10:33:29,162 INFO L226 Difference]: Without dead ends: 621 [2021-11-06 10:33:29,163 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:33:29,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-11-06 10:33:29,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 500. [2021-11-06 10:33:29,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 490 states have (on average 1.1183673469387756) internal successors, (548), 499 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:33:29,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 548 transitions. [2021-11-06 10:33:29,186 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 548 transitions. Word has length 85 [2021-11-06 10:33:29,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:33:29,186 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 548 transitions. [2021-11-06 10:33:29,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:33:29,186 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 548 transitions. [2021-11-06 10:33:29,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 10:33:29,187 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:33:29,187 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:33:29,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-06 10:33:29,188 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:33:29,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:33:29,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1234659723, now seen corresponding path program 1 times [2021-11-06 10:33:29,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:33:29,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634265835] [2021-11-06 10:33:29,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:33:29,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:33:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:33:30,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:33:30,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:33:30,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634265835] [2021-11-06 10:33:30,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634265835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:33:30,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:33:30,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-06 10:33:30,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121016121] [2021-11-06 10:33:30,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-06 10:33:30,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:33:30,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-06 10:33:30,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-11-06 10:33:30,815 INFO L87 Difference]: Start difference. First operand 500 states and 548 transitions. Second operand has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 19 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:01,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:34:01,271 INFO L93 Difference]: Finished difference Result 696 states and 759 transitions. [2021-11-06 10:34:01,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-06 10:34:01,271 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 19 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 10:34:01,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:34:01,273 INFO L225 Difference]: With dead ends: 696 [2021-11-06 10:34:01,273 INFO L226 Difference]: Without dead ends: 639 [2021-11-06 10:34:01,273 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=311, Invalid=1021, Unknown=0, NotChecked=0, Total=1332 [2021-11-06 10:34:01,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-11-06 10:34:01,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 490. [2021-11-06 10:34:01,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 480 states have (on average 1.1208333333333333) internal successors, (538), 489 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:01,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 538 transitions. [2021-11-06 10:34:01,290 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 538 transitions. Word has length 85 [2021-11-06 10:34:01,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:34:01,291 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 538 transitions. [2021-11-06 10:34:01,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 19 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:01,291 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 538 transitions. [2021-11-06 10:34:01,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 10:34:01,291 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:34:01,292 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:34:01,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-06 10:34:01,292 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:34:01,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:34:01,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1192781619, now seen corresponding path program 1 times [2021-11-06 10:34:01,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:34:01,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030066569] [2021-11-06 10:34:01,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:34:01,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:34:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:34:04,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:34:04,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:34:04,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030066569] [2021-11-06 10:34:04,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030066569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:34:04,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:34:04,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 10:34:04,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905231980] [2021-11-06 10:34:04,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:34:04,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:34:04,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:34:04,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:34:04,838 INFO L87 Difference]: Start difference. First operand 490 states and 538 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:26,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:34:26,230 INFO L93 Difference]: Finished difference Result 785 states and 859 transitions. [2021-11-06 10:34:26,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-06 10:34:26,230 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 10:34:26,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:34:26,232 INFO L225 Difference]: With dead ends: 785 [2021-11-06 10:34:26,232 INFO L226 Difference]: Without dead ends: 579 [2021-11-06 10:34:26,232 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2021-11-06 10:34:26,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-11-06 10:34:26,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 441. [2021-11-06 10:34:26,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 431 states have (on average 1.1206496519721578) internal successors, (483), 440 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:26,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 483 transitions. [2021-11-06 10:34:26,251 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 483 transitions. Word has length 85 [2021-11-06 10:34:26,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:34:26,251 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 483 transitions. [2021-11-06 10:34:26,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:26,252 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 483 transitions. [2021-11-06 10:34:26,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 10:34:26,252 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:34:26,253 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:34:26,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-06 10:34:26,253 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:34:26,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:34:26,254 INFO L85 PathProgramCache]: Analyzing trace with hash -778964213, now seen corresponding path program 1 times [2021-11-06 10:34:26,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:34:26,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531645576] [2021-11-06 10:34:26,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:34:26,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:34:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:34:26,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:34:26,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:34:26,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531645576] [2021-11-06 10:34:26,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531645576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:34:26,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:34:26,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:34:26,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262388283] [2021-11-06 10:34:26,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:34:26,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:34:26,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:34:26,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:34:26,685 INFO L87 Difference]: Start difference. First operand 441 states and 483 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:26,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:34:26,820 INFO L93 Difference]: Finished difference Result 618 states and 681 transitions. [2021-11-06 10:34:26,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:34:26,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-06 10:34:26,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:34:26,822 INFO L225 Difference]: With dead ends: 618 [2021-11-06 10:34:26,822 INFO L226 Difference]: Without dead ends: 479 [2021-11-06 10:34:26,822 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:34:26,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-11-06 10:34:26,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 412. [2021-11-06 10:34:26,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 402 states have (on average 1.1169154228855722) internal successors, (449), 411 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:26,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 449 transitions. [2021-11-06 10:34:26,839 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 449 transitions. Word has length 86 [2021-11-06 10:34:26,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:34:26,839 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 449 transitions. [2021-11-06 10:34:26,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:26,839 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 449 transitions. [2021-11-06 10:34:26,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 10:34:26,840 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:34:26,840 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:34:26,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-06 10:34:26,840 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:34:26,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:34:26,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2119490476, now seen corresponding path program 1 times [2021-11-06 10:34:26,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:34:26,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954163384] [2021-11-06 10:34:26,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:34:26,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:34:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:34:27,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:34:27,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:34:27,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954163384] [2021-11-06 10:34:27,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954163384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:34:27,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:34:27,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:34:27,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520613477] [2021-11-06 10:34:27,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:34:27,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:34:27,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:34:27,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:34:27,667 INFO L87 Difference]: Start difference. First operand 412 states and 449 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:40,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:34:40,542 INFO L93 Difference]: Finished difference Result 661 states and 717 transitions. [2021-11-06 10:34:40,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 10:34:40,548 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-06 10:34:40,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:34:40,549 INFO L225 Difference]: With dead ends: 661 [2021-11-06 10:34:40,550 INFO L226 Difference]: Without dead ends: 587 [2021-11-06 10:34:40,550 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-11-06 10:34:40,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-11-06 10:34:40,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 434. [2021-11-06 10:34:40,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 424 states have (on average 1.1132075471698113) internal successors, (472), 433 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:40,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 472 transitions. [2021-11-06 10:34:40,567 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 472 transitions. Word has length 87 [2021-11-06 10:34:40,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:34:40,567 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 472 transitions. [2021-11-06 10:34:40,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:34:40,568 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 472 transitions. [2021-11-06 10:34:40,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 10:34:40,568 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:34:40,568 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:34:40,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-06 10:34:40,569 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:34:40,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:34:40,569 INFO L85 PathProgramCache]: Analyzing trace with hash -789273426, now seen corresponding path program 1 times [2021-11-06 10:34:40,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:34:40,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883624758] [2021-11-06 10:34:40,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:34:40,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:34:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:34:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:34:42,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:34:42,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883624758] [2021-11-06 10:34:42,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883624758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:34:42,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:34:42,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-06 10:34:42,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663219759] [2021-11-06 10:34:42,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-06 10:34:42,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:34:42,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-06 10:34:42,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-06 10:34:42,265 INFO L87 Difference]: Start difference. First operand 434 states and 472 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:02,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:35:02,487 INFO L93 Difference]: Finished difference Result 592 states and 645 transitions. [2021-11-06 10:35:02,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 10:35:02,487 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-06 10:35:02,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:35:02,489 INFO L225 Difference]: With dead ends: 592 [2021-11-06 10:35:02,489 INFO L226 Difference]: Without dead ends: 440 [2021-11-06 10:35:02,489 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2021-11-06 10:35:02,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-06 10:35:02,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 408. [2021-11-06 10:35:02,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 398 states have (on average 1.1105527638190955) internal successors, (442), 407 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:02,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 442 transitions. [2021-11-06 10:35:02,507 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 442 transitions. Word has length 87 [2021-11-06 10:35:02,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:35:02,507 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 442 transitions. [2021-11-06 10:35:02,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:35:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 442 transitions. [2021-11-06 10:35:02,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-06 10:35:02,508 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:35:02,509 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:35:02,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-06 10:35:02,509 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 10:35:02,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:35:02,509 INFO L85 PathProgramCache]: Analyzing trace with hash -535575669, now seen corresponding path program 1 times [2021-11-06 10:35:02,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:35:02,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343403669] [2021-11-06 10:35:02,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:35:02,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:35:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:35:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:35:03,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:35:03,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343403669] [2021-11-06 10:35:03,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343403669] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 10:35:03,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336629460] [2021-11-06 10:35:03,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:35:03,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:35:03,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:35:03,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 10:35:03,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 10:35:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:35:04,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 3061 conjuncts, 132 conjunts are in the unsatisfiable core [2021-11-06 10:35:04,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:35:04,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-06 10:35:04,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-06 10:35:06,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:35:06,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 17 [2021-11-06 10:35:06,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:35:06,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-06 10:35:06,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 10:35:06,672 INFO L354 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2021-11-06 10:35:06,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 98 [2021-11-06 10:35:06,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:35:06,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:35:07,006 INFO L354 Elim1Store]: treesize reduction 140, result has 24.3 percent of original size [2021-11-06 10:35:07,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 98 treesize of output 148 [2021-11-06 10:35:08,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:35:08,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:35:08,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:35:08,392 INFO L354 Elim1Store]: treesize reduction 71, result has 14.5 percent of original size [2021-11-06 10:35:08,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 82 treesize of output 66 [2021-11-06 10:35:11,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:35:11,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:35:11,097 INFO L354 Elim1Store]: treesize reduction 79, result has 15.1 percent of original size [2021-11-06 10:35:11,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 114 treesize of output 90 [2021-11-06 10:35:13,394 INFO L354 Elim1Store]: treesize reduction 84, result has 66.7 percent of original size [2021-11-06 10:35:13,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 107 treesize of output 236 [2021-11-06 10:35:13,489 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-06 10:35:13,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 236 treesize of output 232 Killed by 15