./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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_array_eq_ignore_case_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 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 19:04:12,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 19:04:12,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 19:04:12,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 19:04:12,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 19:04:12,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 19:04:12,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 19:04:12,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 19:04:12,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 19:04:12,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 19:04:12,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 19:04:12,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 19:04:12,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 19:04:12,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 19:04:12,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 19:04:12,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 19:04:12,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 19:04:12,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 19:04:12,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 19:04:12,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 19:04:12,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 19:04:12,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 19:04:12,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 19:04:12,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 19:04:12,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 19:04:12,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 19:04:12,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 19:04:12,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 19:04:12,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 19:04:12,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 19:04:12,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 19:04:12,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 19:04:12,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 19:04:12,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 19:04:12,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 19:04:12,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 19:04:12,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 19:04:12,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 19:04:12,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 19:04:12,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 19:04:12,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 19:04:12,167 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 19:04:12,193 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 19:04:12,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 19:04:12,194 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 19:04:12,194 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 19:04:12,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 19:04:12,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 19:04:12,195 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 19:04:12,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 19:04:12,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 19:04:12,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 19:04:12,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 19:04:12,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 19:04:12,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 19:04:12,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 19:04:12,197 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 19:04:12,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 19:04:12,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 19:04:12,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 19:04:12,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 19:04:12,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 19:04:12,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 19:04:12,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 19:04:12,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 19:04:12,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 19:04:12,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 19:04:12,199 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 19:04:12,199 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 19:04:12,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 19:04:12,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 19:04:12,199 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 [2021-11-22 19:04:12,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 19:04:12,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 19:04:12,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 19:04:12,422 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 19:04:12,423 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 19:04:12,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2021-11-22 19:04:12,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae71037e2/5cb674e39c34457aaa3f012c1343258b/FLAG804034d65 [2021-11-22 19:04:13,004 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 19:04:13,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2021-11-22 19:04:13,038 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae71037e2/5cb674e39c34457aaa3f012c1343258b/FLAG804034d65 [2021-11-22 19:04:13,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae71037e2/5cb674e39c34457aaa3f012c1343258b [2021-11-22 19:04:13,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 19:04:13,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 19:04:13,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 19:04:13,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 19:04:13,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 19:04:13,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:04:13" (1/1) ... [2021-11-22 19:04:13,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e1797f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:04:13, skipping insertion in model container [2021-11-22 19:04:13,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:04:13" (1/1) ... [2021-11-22 19:04:13,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 19:04:13,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 19:04:13,543 WARN L230 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_array_eq_ignore_case_harness.i[4498,4511] [2021-11-22 19:04:13,550 WARN L230 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_array_eq_ignore_case_harness.i[4558,4571] [2021-11-22 19:04:14,052 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,053 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,053 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,053 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,054 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,061 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,062 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,065 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,066 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,284 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 19:04:14,285 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 19:04:14,286 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 19:04:14,287 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 19:04:14,288 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 19:04:14,288 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 19:04:14,289 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 19:04:14,289 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 19:04:14,289 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 19:04:14,290 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 19:04:14,372 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 19:04:14,428 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,429 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 19:04:14,551 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 19:04:14,578 WARN L230 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_array_eq_ignore_case_harness.i[4498,4511] [2021-11-22 19:04:14,579 WARN L230 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_array_eq_ignore_case_harness.i[4558,4571] [2021-11-22 19:04:14,611 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,612 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,612 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,613 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,614 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,628 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,628 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,629 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,630 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,659 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 19:04:14,659 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 19:04:14,660 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 19:04:14,660 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 19:04:14,661 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 19:04:14,661 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 19:04:14,661 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 19:04:14,662 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 19:04:14,662 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 19:04:14,662 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 19:04:14,679 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 19:04:14,750 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,750 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:04:14,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 19:04:14,933 INFO L208 MainTranslator]: Completed translation [2021-11-22 19:04:14,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:04:14 WrapperNode [2021-11-22 19:04:14,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 19:04:14,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 19:04:14,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 19:04:14,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 19:04:14,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:04:14" (1/1) ... [2021-11-22 19:04:15,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:04:14" (1/1) ... [2021-11-22 19:04:15,089 INFO L137 Inliner]: procedures = 691, calls = 2615, calls flagged for inlining = 954, calls inlined = 30, statements flattened = 933 [2021-11-22 19:04:15,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 19:04:15,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 19:04:15,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 19:04:15,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 19:04:15,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:04:14" (1/1) ... [2021-11-22 19:04:15,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:04:14" (1/1) ... [2021-11-22 19:04:15,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:04:14" (1/1) ... [2021-11-22 19:04:15,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:04:14" (1/1) ... [2021-11-22 19:04:15,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:04:14" (1/1) ... [2021-11-22 19:04:15,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:04:14" (1/1) ... [2021-11-22 19:04:15,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:04:14" (1/1) ... [2021-11-22 19:04:15,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 19:04:15,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 19:04:15,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 19:04:15,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 19:04:15,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:04:14" (1/1) ... [2021-11-22 19:04:15,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 19:04:15,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:04:15,250 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) [2021-11-22 19:04:15,332 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 [2021-11-22 19:04:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 19:04:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 19:04:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 19:04:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 19:04:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 19:04:15,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 19:04:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 19:04:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 19:04:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 19:04:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 19:04:15,514 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 19:04:15,515 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 19:04:16,608 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 19:04:16,614 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 19:04:16,617 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 19:04:16,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:04:16 BoogieIcfgContainer [2021-11-22 19:04:16,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 19:04:16,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 19:04:16,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 19:04:16,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 19:04:16,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 07:04:13" (1/3) ... [2021-11-22 19:04:16,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c81dd97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:04:16, skipping insertion in model container [2021-11-22 19:04:16,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:04:14" (2/3) ... [2021-11-22 19:04:16,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c81dd97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:04:16, skipping insertion in model container [2021-11-22 19:04:16,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:04:16" (3/3) ... [2021-11-22 19:04:16,624 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_eq_ignore_case_harness.i [2021-11-22 19:04:16,631 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 19:04:16,631 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-22 19:04:16,673 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 19:04:16,686 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 [2021-11-22 19:04:16,687 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-22 19:04:16,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 70 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:16,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-22 19:04:16,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:04:16,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:04:16,704 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:04:16,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:04:16,708 INFO L85 PathProgramCache]: Analyzing trace with hash 2061851998, now seen corresponding path program 1 times [2021-11-22 19:04:16,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:04:16,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823960839] [2021-11-22 19:04:16,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:04:16,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:04:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:04:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:04:17,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:04:17,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823960839] [2021-11-22 19:04:17,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823960839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:04:17,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:04:17,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 19:04:17,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493489242] [2021-11-22 19:04:17,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:04:17,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 19:04:17,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:04:17,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 19:04:17,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 19:04:17,083 INFO L87 Difference]: Start difference. First operand has 71 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 70 states have internal predecessors, (97), 0 states have call successors, (0), 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 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:17,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:04:17,103 INFO L93 Difference]: Finished difference Result 139 states and 190 transitions. [2021-11-22 19:04:17,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 19:04:17,105 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-22 19:04:17,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:04:17,110 INFO L225 Difference]: With dead ends: 139 [2021-11-22 19:04:17,111 INFO L226 Difference]: Without dead ends: 64 [2021-11-22 19:04:17,113 INFO L932 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 [2021-11-22 19:04:17,118 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:04:17,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:04:17,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-22 19:04:17,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-22 19:04:17,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 63 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:17,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2021-11-22 19:04:17,151 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 28 [2021-11-22 19:04:17,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:04:17,151 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2021-11-22 19:04:17,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:17,152 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2021-11-22 19:04:17,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-22 19:04:17,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:04:17,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:04:17,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 19:04:17,156 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:04:17,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:04:17,157 INFO L85 PathProgramCache]: Analyzing trace with hash 398248612, now seen corresponding path program 1 times [2021-11-22 19:04:17,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:04:17,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151895005] [2021-11-22 19:04:17,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:04:17,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:04:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:04:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:04:17,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:04:17,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151895005] [2021-11-22 19:04:17,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151895005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:04:17,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:04:17,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 19:04:17,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7093425] [2021-11-22 19:04:17,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:04:17,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 19:04:17,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:04:17,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 19:04:17,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:04:17,341 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:17,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:04:17,380 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2021-11-22 19:04:17,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 19:04:17,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-22 19:04:17,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:04:17,382 INFO L225 Difference]: With dead ends: 94 [2021-11-22 19:04:17,382 INFO L226 Difference]: Without dead ends: 78 [2021-11-22 19:04:17,382 INFO L932 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 [2021-11-22 19:04:17,383 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 14 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:04:17,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 211 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:04:17,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-22 19:04:17,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 66. [2021-11-22 19:04:17,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 65 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:17,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2021-11-22 19:04:17,396 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 28 [2021-11-22 19:04:17,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:04:17,396 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2021-11-22 19:04:17,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:17,396 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2021-11-22 19:04:17,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-22 19:04:17,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:04:17,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:04:17,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 19:04:17,398 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:04:17,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:04:17,398 INFO L85 PathProgramCache]: Analyzing trace with hash 475362066, now seen corresponding path program 1 times [2021-11-22 19:04:17,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:04:17,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576480915] [2021-11-22 19:04:17,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:04:17,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:04:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:04:17,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:04:17,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:04:17,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576480915] [2021-11-22 19:04:17,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576480915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:04:17,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:04:17,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 19:04:17,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186159157] [2021-11-22 19:04:17,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:04:17,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 19:04:17,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:04:17,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 19:04:17,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 19:04:17,629 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:17,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:04:17,711 INFO L93 Difference]: Finished difference Result 219 states and 251 transitions. [2021-11-22 19:04:17,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 19:04:17,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-11-22 19:04:17,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:04:17,712 INFO L225 Difference]: With dead ends: 219 [2021-11-22 19:04:17,713 INFO L226 Difference]: Without dead ends: 209 [2021-11-22 19:04:17,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-22 19:04:17,714 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 172 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:04:17,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 417 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:04:17,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-22 19:04:17,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 111. [2021-11-22 19:04:17,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 108 states have (on average 1.212962962962963) internal successors, (131), 110 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2021-11-22 19:04:17,721 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 30 [2021-11-22 19:04:17,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:04:17,722 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2021-11-22 19:04:17,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:17,722 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2021-11-22 19:04:17,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-22 19:04:17,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:04:17,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:04:17,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 19:04:17,723 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:04:17,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:04:17,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1805601715, now seen corresponding path program 1 times [2021-11-22 19:04:17,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:04:17,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860313545] [2021-11-22 19:04:17,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:04:17,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:04:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:04:18,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:04:18,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:04:18,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860313545] [2021-11-22 19:04:18,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860313545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:04:18,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:04:18,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 19:04:18,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884059197] [2021-11-22 19:04:18,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:04:18,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 19:04:18,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:04:18,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 19:04:18,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 19:04:18,175 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:18,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:04:18,512 INFO L93 Difference]: Finished difference Result 299 states and 347 transitions. [2021-11-22 19:04:18,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 19:04:18,512 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-11-22 19:04:18,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:04:18,514 INFO L225 Difference]: With dead ends: 299 [2021-11-22 19:04:18,515 INFO L226 Difference]: Without dead ends: 297 [2021-11-22 19:04:18,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-11-22 19:04:18,517 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 366 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 19:04:18,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 580 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 19:04:18,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-22 19:04:18,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 165. [2021-11-22 19:04:18,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 162 states have (on average 1.2160493827160495) internal successors, (197), 164 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:18,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 197 transitions. [2021-11-22 19:04:18,539 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 197 transitions. Word has length 30 [2021-11-22 19:04:18,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:04:18,540 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 197 transitions. [2021-11-22 19:04:18,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:18,541 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 197 transitions. [2021-11-22 19:04:18,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-22 19:04:18,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:04:18,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:04:18,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 19:04:18,544 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:04:18,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:04:18,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1868530673, now seen corresponding path program 1 times [2021-11-22 19:04:18,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:04:18,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534818775] [2021-11-22 19:04:18,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:04:18,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:04:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:04:18,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:04:18,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:04:18,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534818775] [2021-11-22 19:04:18,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534818775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:04:18,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:04:18,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 19:04:18,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391505197] [2021-11-22 19:04:18,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:04:18,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 19:04:18,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:04:18,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 19:04:18,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 19:04:18,679 INFO L87 Difference]: Start difference. First operand 165 states and 197 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:18,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:04:18,812 INFO L93 Difference]: Finished difference Result 260 states and 304 transitions. [2021-11-22 19:04:18,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 19:04:18,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-22 19:04:18,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:04:18,815 INFO L225 Difference]: With dead ends: 260 [2021-11-22 19:04:18,815 INFO L226 Difference]: Without dead ends: 217 [2021-11-22 19:04:18,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-22 19:04:18,816 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 249 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:04:18,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 503 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:04:18,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-22 19:04:18,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 202. [2021-11-22 19:04:18,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 199 states have (on average 1.1909547738693467) internal successors, (237), 201 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) [2021-11-22 19:04:18,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 237 transitions. [2021-11-22 19:04:18,821 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 237 transitions. Word has length 31 [2021-11-22 19:04:18,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:04:18,821 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 237 transitions. [2021-11-22 19:04:18,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:18,822 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 237 transitions. [2021-11-22 19:04:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-22 19:04:18,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:04:18,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:04:18,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 19:04:18,823 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:04:18,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:04:18,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1284815223, now seen corresponding path program 1 times [2021-11-22 19:04:18,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:04:18,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952255940] [2021-11-22 19:04:18,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:04:18,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:04:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:04:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:04:19,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:04:19,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952255940] [2021-11-22 19:04:19,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952255940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:04:19,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:04:19,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 19:04:19,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898335214] [2021-11-22 19:04:19,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:04:19,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 19:04:19,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:04:19,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 19:04:19,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-22 19:04:19,067 INFO L87 Difference]: Start difference. First operand 202 states and 237 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:19,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:04:19,501 INFO L93 Difference]: Finished difference Result 317 states and 361 transitions. [2021-11-22 19:04:19,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-22 19:04:19,502 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-22 19:04:19,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:04:19,503 INFO L225 Difference]: With dead ends: 317 [2021-11-22 19:04:19,503 INFO L226 Difference]: Without dead ends: 300 [2021-11-22 19:04:19,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2021-11-22 19:04:19,504 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 633 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 19:04:19,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 533 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 19:04:19,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-22 19:04:19,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 250. [2021-11-22 19:04:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 247 states have (on average 1.1983805668016194) internal successors, (296), 249 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:19,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 296 transitions. [2021-11-22 19:04:19,511 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 296 transitions. Word has length 33 [2021-11-22 19:04:19,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:04:19,512 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 296 transitions. [2021-11-22 19:04:19,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:19,512 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 296 transitions. [2021-11-22 19:04:19,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-22 19:04:19,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:04:19,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:04:19,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 19:04:19,513 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:04:19,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:04:19,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1191774764, now seen corresponding path program 1 times [2021-11-22 19:04:19,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:04:19,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461954684] [2021-11-22 19:04:19,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:04:19,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:04:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:04:19,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:04:19,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:04:19,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461954684] [2021-11-22 19:04:19,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461954684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:04:19,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:04:19,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 19:04:19,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195886196] [2021-11-22 19:04:19,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:04:19,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 19:04:19,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:04:19,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 19:04:19,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:04:19,629 INFO L87 Difference]: Start difference. First operand 250 states and 296 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:19,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:04:19,664 INFO L93 Difference]: Finished difference Result 274 states and 320 transitions. [2021-11-22 19:04:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 19:04:19,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-11-22 19:04:19,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:04:19,666 INFO L225 Difference]: With dead ends: 274 [2021-11-22 19:04:19,666 INFO L226 Difference]: Without dead ends: 243 [2021-11-22 19:04:19,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:04:19,667 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 31 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:04:19,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 185 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:04:19,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-22 19:04:19,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 232. [2021-11-22 19:04:19,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 229 states have (on average 1.1877729257641922) internal successors, (272), 231 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 272 transitions. [2021-11-22 19:04:19,672 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 272 transitions. Word has length 34 [2021-11-22 19:04:19,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:04:19,673 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 272 transitions. [2021-11-22 19:04:19,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 272 transitions. [2021-11-22 19:04:19,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-22 19:04:19,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:04:19,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:04:19,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 19:04:19,674 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:04:19,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:04:19,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1967932426, now seen corresponding path program 1 times [2021-11-22 19:04:19,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:04:19,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918303915] [2021-11-22 19:04:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:04:19,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:04:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:04:19,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:04:19,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:04:19,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918303915] [2021-11-22 19:04:19,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918303915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:04:19,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:04:19,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-22 19:04:19,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493831887] [2021-11-22 19:04:19,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:04:19,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 19:04:19,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:04:19,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 19:04:19,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-22 19:04:19,970 INFO L87 Difference]: Start difference. First operand 232 states and 272 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:20,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:04:20,950 INFO L93 Difference]: Finished difference Result 325 states and 362 transitions. [2021-11-22 19:04:20,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-22 19:04:20,950 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-22 19:04:20,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:04:20,951 INFO L225 Difference]: With dead ends: 325 [2021-11-22 19:04:20,951 INFO L226 Difference]: Without dead ends: 293 [2021-11-22 19:04:20,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=313, Invalid=877, Unknown=0, NotChecked=0, Total=1190 [2021-11-22 19:04:20,952 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 682 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:04:20,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 752 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 19:04:20,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-22 19:04:20,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 232. [2021-11-22 19:04:20,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 229 states have (on average 1.1834061135371179) internal successors, (271), 231 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 271 transitions. [2021-11-22 19:04:20,958 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 271 transitions. Word has length 36 [2021-11-22 19:04:20,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:04:20,959 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 271 transitions. [2021-11-22 19:04:20,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:20,959 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 271 transitions. [2021-11-22 19:04:20,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-22 19:04:20,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:04:20,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:04:20,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 19:04:20,960 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:04:20,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:04:20,960 INFO L85 PathProgramCache]: Analyzing trace with hash -137053540, now seen corresponding path program 1 times [2021-11-22 19:04:20,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:04:20,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568137643] [2021-11-22 19:04:20,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:04:20,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:04:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:04:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:04:21,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:04:21,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568137643] [2021-11-22 19:04:21,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568137643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:04:21,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:04:21,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 19:04:21,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050342210] [2021-11-22 19:04:21,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:04:21,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 19:04:21,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:04:21,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 19:04:21,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-22 19:04:21,645 INFO L87 Difference]: Start difference. First operand 232 states and 271 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:22,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:04:22,248 INFO L93 Difference]: Finished difference Result 284 states and 321 transitions. [2021-11-22 19:04:22,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 19:04:22,248 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-22 19:04:22,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:04:22,249 INFO L225 Difference]: With dead ends: 284 [2021-11-22 19:04:22,249 INFO L226 Difference]: Without dead ends: 253 [2021-11-22 19:04:22,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-11-22 19:04:22,250 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 208 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:04:22,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 1111 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 19:04:22,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-22 19:04:22,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 225. [2021-11-22 19:04:22,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 222 states have (on average 1.1801801801801801) internal successors, (262), 224 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:22,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 262 transitions. [2021-11-22 19:04:22,257 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 262 transitions. Word has length 36 [2021-11-22 19:04:22,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:04:22,257 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 262 transitions. [2021-11-22 19:04:22,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:22,257 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 262 transitions. [2021-11-22 19:04:22,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-22 19:04:22,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:04:22,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:04:22,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 19:04:22,258 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:04:22,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:04:22,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2056384587, now seen corresponding path program 1 times [2021-11-22 19:04:22,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:04:22,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376200884] [2021-11-22 19:04:22,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:04:22,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:04:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:04:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:04:22,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:04:22,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376200884] [2021-11-22 19:04:22,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376200884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:04:22,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:04:22,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 19:04:22,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164454790] [2021-11-22 19:04:22,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:04:22,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 19:04:22,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:04:22,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 19:04:22,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 19:04:22,601 INFO L87 Difference]: Start difference. First operand 225 states and 262 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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) [2021-11-22 19:04:22,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:04:22,679 INFO L93 Difference]: Finished difference Result 250 states and 287 transitions. [2021-11-22 19:04:22,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 19:04:22,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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 [2021-11-22 19:04:22,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:04:22,680 INFO L225 Difference]: With dead ends: 250 [2021-11-22 19:04:22,680 INFO L226 Difference]: Without dead ends: 236 [2021-11-22 19:04:22,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:04:22,681 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 157 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:04:22,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 230 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:04:22,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-11-22 19:04:22,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 225. [2021-11-22 19:04:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 222 states have (on average 1.1756756756756757) internal successors, (261), 224 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:22,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 261 transitions. [2021-11-22 19:04:22,687 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 261 transitions. Word has length 39 [2021-11-22 19:04:22,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:04:22,687 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 261 transitions. [2021-11-22 19:04:22,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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) [2021-11-22 19:04:22,688 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 261 transitions. [2021-11-22 19:04:22,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-22 19:04:22,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:04:22,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:04:22,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 19:04:22,689 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:04:22,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:04:22,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1881349823, now seen corresponding path program 1 times [2021-11-22 19:04:22,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:04:22,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309173330] [2021-11-22 19:04:22,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:04:22,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:04:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:04:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:04:23,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:04:23,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309173330] [2021-11-22 19:04:23,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309173330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:04:23,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:04:23,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-22 19:04:23,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327552756] [2021-11-22 19:04:23,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:04:23,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 19:04:23,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:04:23,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 19:04:23,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-22 19:04:23,341 INFO L87 Difference]: Start difference. First operand 225 states and 261 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 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) [2021-11-22 19:04:24,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:04:24,938 INFO L93 Difference]: Finished difference Result 260 states and 291 transitions. [2021-11-22 19:04:24,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-22 19:04:24,939 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 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 [2021-11-22 19:04:24,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:04:24,940 INFO L225 Difference]: With dead ends: 260 [2021-11-22 19:04:24,940 INFO L226 Difference]: Without dead ends: 236 [2021-11-22 19:04:24,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=335, Invalid=1225, Unknown=0, NotChecked=0, Total=1560 [2021-11-22 19:04:24,941 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 696 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 19:04:24,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 1062 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 19:04:24,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-11-22 19:04:24,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 203. [2021-11-22 19:04:24,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 200 states have (on average 1.18) internal successors, (236), 202 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:24,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 236 transitions. [2021-11-22 19:04:24,947 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 236 transitions. Word has length 39 [2021-11-22 19:04:24,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:04:24,947 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 236 transitions. [2021-11-22 19:04:24,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 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) [2021-11-22 19:04:24,948 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 236 transitions. [2021-11-22 19:04:24,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-22 19:04:24,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:04:24,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:04:24,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 19:04:24,949 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:04:24,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:04:24,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1037332491, now seen corresponding path program 1 times [2021-11-22 19:04:24,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:04:24,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169076429] [2021-11-22 19:04:24,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:04:24,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:04:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:04:25,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:04:25,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:04:25,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169076429] [2021-11-22 19:04:25,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169076429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:04:25,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:04:25,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-22 19:04:25,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344113325] [2021-11-22 19:04:25,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:04:25,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 19:04:25,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:04:25,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 19:04:25,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-22 19:04:25,354 INFO L87 Difference]: Start difference. First operand 203 states and 236 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 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) [2021-11-22 19:04:26,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:04:26,087 INFO L93 Difference]: Finished difference Result 287 states and 324 transitions. [2021-11-22 19:04:26,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 19:04:26,088 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 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 [2021-11-22 19:04:26,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:04:26,089 INFO L225 Difference]: With dead ends: 287 [2021-11-22 19:04:26,089 INFO L226 Difference]: Without dead ends: 257 [2021-11-22 19:04:26,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2021-11-22 19:04:26,089 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 211 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:04:26,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 927 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 19:04:26,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-11-22 19:04:26,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 205. [2021-11-22 19:04:26,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 202 states have (on average 1.1782178217821782) internal successors, (238), 204 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:26,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 238 transitions. [2021-11-22 19:04:26,096 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 238 transitions. Word has length 39 [2021-11-22 19:04:26,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:04:26,096 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 238 transitions. [2021-11-22 19:04:26,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 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) [2021-11-22 19:04:26,096 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 238 transitions. [2021-11-22 19:04:26,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-22 19:04:26,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:04:26,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:04:26,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 19:04:26,098 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:04:26,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:04:26,098 INFO L85 PathProgramCache]: Analyzing trace with hash -472978791, now seen corresponding path program 1 times [2021-11-22 19:04:26,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:04:26,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786146655] [2021-11-22 19:04:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:04:26,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:04:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:04:26,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:04:26,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:04:26,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786146655] [2021-11-22 19:04:26,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786146655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:04:26,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:04:26,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-22 19:04:26,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300326724] [2021-11-22 19:04:26,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:04:26,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 19:04:26,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:04:26,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 19:04:26,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-22 19:04:26,311 INFO L87 Difference]: Start difference. First operand 205 states and 238 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:26,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:04:26,719 INFO L93 Difference]: Finished difference Result 325 states and 375 transitions. [2021-11-22 19:04:26,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 19:04:26,719 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-11-22 19:04:26,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:04:26,720 INFO L225 Difference]: With dead ends: 325 [2021-11-22 19:04:26,720 INFO L226 Difference]: Without dead ends: 309 [2021-11-22 19:04:26,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2021-11-22 19:04:26,721 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 575 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 19:04:26,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 676 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 19:04:26,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-22 19:04:26,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 233. [2021-11-22 19:04:26,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 230 states have (on average 1.1608695652173913) internal successors, (267), 232 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:26,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 267 transitions. [2021-11-22 19:04:26,729 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 267 transitions. Word has length 40 [2021-11-22 19:04:26,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:04:26,729 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 267 transitions. [2021-11-22 19:04:26,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:04:26,729 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 267 transitions. [2021-11-22 19:04:26,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-22 19:04:26,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:04:26,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:04:26,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 19:04:26,730 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:04:26,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:04:26,731 INFO L85 PathProgramCache]: Analyzing trace with hash -348225776, now seen corresponding path program 1 times [2021-11-22 19:04:26,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:04:26,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690256168] [2021-11-22 19:04:26,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:04:26,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:04:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:04:59,642 WARN L227 SmtUtils]: Spent 8.52s on a formula simplification. DAG size of input: 158 DAG size of output: 89 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 19:05:57,776 WARN L227 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 172 DAG size of output: 82 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 19:06:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:06:09,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:06:09,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690256168] [2021-11-22 19:06:09,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690256168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:06:09,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:06:09,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-22 19:06:09,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100539255] [2021-11-22 19:06:09,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:06:09,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-22 19:06:09,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:06:09,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-22 19:06:09,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=357, Unknown=2, NotChecked=0, Total=420 [2021-11-22 19:06:09,677 INFO L87 Difference]: Start difference. First operand 233 states and 267 transitions. Second operand has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:06:24,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:06:24,329 INFO L93 Difference]: Finished difference Result 289 states and 325 transitions. [2021-11-22 19:06:24,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 19:06:24,329 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-22 19:06:24,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:06:24,330 INFO L225 Difference]: With dead ends: 289 [2021-11-22 19:06:24,330 INFO L226 Difference]: Without dead ends: 287 [2021-11-22 19:06:24,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 45.3s TimeCoverageRelationStatistics Valid=307, Invalid=1172, Unknown=3, NotChecked=0, Total=1482 [2021-11-22 19:06:24,331 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 542 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:06:24,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 1041 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-22 19:06:24,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-22 19:06:24,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 235. [2021-11-22 19:06:24,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 232 states have (on average 1.1637931034482758) internal successors, (270), 234 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:06:24,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 270 transitions. [2021-11-22 19:06:24,339 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 270 transitions. Word has length 41 [2021-11-22 19:06:24,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:06:24,339 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 270 transitions. [2021-11-22 19:06:24,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:06:24,339 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 270 transitions. [2021-11-22 19:06:24,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-22 19:06:24,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:06:24,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:06:24,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 19:06:24,340 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:06:24,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:06:24,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1015691329, now seen corresponding path program 1 times [2021-11-22 19:06:24,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:06:24,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763430059] [2021-11-22 19:06:24,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:06:24,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:06:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:06:38,805 WARN L227 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 103 DAG size of output: 43 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 19:06:57,935 WARN L227 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 98 DAG size of output: 44 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 19:06:57,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:06:57,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:06:57,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763430059] [2021-11-22 19:06:57,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763430059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:06:57,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:06:57,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-22 19:06:57,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107585181] [2021-11-22 19:06:57,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:06:57,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 19:06:57,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:06:57,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 19:06:57,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-22 19:06:57,958 INFO L87 Difference]: Start difference. First operand 235 states and 270 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:01,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:07:01,412 INFO L93 Difference]: Finished difference Result 306 states and 345 transitions. [2021-11-22 19:07:01,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-22 19:07:01,412 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-22 19:07:01,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:07:01,413 INFO L225 Difference]: With dead ends: 306 [2021-11-22 19:07:01,413 INFO L226 Difference]: Without dead ends: 292 [2021-11-22 19:07:01,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=240, Invalid=882, Unknown=0, NotChecked=0, Total=1122 [2021-11-22 19:07:01,414 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 453 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 19:07:01,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 939 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 19:07:01,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-22 19:07:01,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 235. [2021-11-22 19:07:01,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 232 states have (on average 1.1637931034482758) internal successors, (270), 234 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 270 transitions. [2021-11-22 19:07:01,426 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 270 transitions. Word has length 42 [2021-11-22 19:07:01,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:07:01,426 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 270 transitions. [2021-11-22 19:07:01,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:01,426 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 270 transitions. [2021-11-22 19:07:01,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-22 19:07:01,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:07:01,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:07:01,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 19:07:01,427 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:07:01,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:07:01,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1949036318, now seen corresponding path program 1 times [2021-11-22 19:07:01,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:07:01,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657823075] [2021-11-22 19:07:01,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:07:01,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:07:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:07:01,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:07:01,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:07:01,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657823075] [2021-11-22 19:07:01,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657823075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:07:01,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:07:01,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 19:07:01,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84941685] [2021-11-22 19:07:01,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:07:01,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 19:07:01,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:07:01,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 19:07:01,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-22 19:07:01,893 INFO L87 Difference]: Start difference. First operand 235 states and 270 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:02,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:07:02,535 INFO L93 Difference]: Finished difference Result 312 states and 347 transitions. [2021-11-22 19:07:02,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 19:07:02,535 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-22 19:07:02,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:07:02,536 INFO L225 Difference]: With dead ends: 312 [2021-11-22 19:07:02,536 INFO L226 Difference]: Without dead ends: 295 [2021-11-22 19:07:02,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2021-11-22 19:07:02,538 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 321 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:07:02,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 701 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 19:07:02,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-22 19:07:02,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 236. [2021-11-22 19:07:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 233 states have (on average 1.1630901287553648) internal successors, (271), 235 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:02,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 271 transitions. [2021-11-22 19:07:02,553 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 271 transitions. Word has length 42 [2021-11-22 19:07:02,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:07:02,553 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 271 transitions. [2021-11-22 19:07:02,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 271 transitions. [2021-11-22 19:07:02,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-22 19:07:02,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:07:02,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:07:02,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 19:07:02,554 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:07:02,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:07:02,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1516079942, now seen corresponding path program 1 times [2021-11-22 19:07:02,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:07:02,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082572367] [2021-11-22 19:07:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:07:02,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:07:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:07:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:07:03,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:07:03,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082572367] [2021-11-22 19:07:03,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082572367] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:07:03,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:07:03,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-22 19:07:03,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933561899] [2021-11-22 19:07:03,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:07:03,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-22 19:07:03,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:07:03,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-22 19:07:03,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-11-22 19:07:03,259 INFO L87 Difference]: Start difference. First operand 236 states and 271 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:05,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:07:05,023 INFO L93 Difference]: Finished difference Result 316 states and 344 transitions. [2021-11-22 19:07:05,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-22 19:07:05,024 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-22 19:07:05,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:07:05,025 INFO L225 Difference]: With dead ends: 316 [2021-11-22 19:07:05,025 INFO L226 Difference]: Without dead ends: 297 [2021-11-22 19:07:05,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=447, Invalid=1275, Unknown=0, NotChecked=0, Total=1722 [2021-11-22 19:07:05,026 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 877 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 19:07:05,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [877 Valid, 1090 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 19:07:05,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-22 19:07:05,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 236. [2021-11-22 19:07:05,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 233 states have (on average 1.1587982832618027) internal successors, (270), 235 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:05,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 270 transitions. [2021-11-22 19:07:05,038 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 270 transitions. Word has length 42 [2021-11-22 19:07:05,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:07:05,038 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 270 transitions. [2021-11-22 19:07:05,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:05,038 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 270 transitions. [2021-11-22 19:07:05,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-22 19:07:05,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:07:05,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:07:05,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 19:07:05,039 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:07:05,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:07:05,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1857147581, now seen corresponding path program 1 times [2021-11-22 19:07:05,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:07:05,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975064446] [2021-11-22 19:07:05,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:07:05,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:07:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:07:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:07:05,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:07:05,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975064446] [2021-11-22 19:07:05,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975064446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:07:05,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:07:05,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-22 19:07:05,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457398539] [2021-11-22 19:07:05,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:07:05,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 19:07:05,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:07:05,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 19:07:05,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-22 19:07:05,597 INFO L87 Difference]: Start difference. First operand 236 states and 270 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:06,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:07:06,346 INFO L93 Difference]: Finished difference Result 287 states and 318 transitions. [2021-11-22 19:07:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 19:07:06,347 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-22 19:07:06,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:07:06,347 INFO L225 Difference]: With dead ends: 287 [2021-11-22 19:07:06,347 INFO L226 Difference]: Without dead ends: 267 [2021-11-22 19:07:06,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-22 19:07:06,348 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 425 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:07:06,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 635 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 19:07:06,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-22 19:07:06,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 236. [2021-11-22 19:07:06,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 233 states have (on average 1.1545064377682404) internal successors, (269), 235 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:06,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 269 transitions. [2021-11-22 19:07:06,369 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 269 transitions. Word has length 42 [2021-11-22 19:07:06,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:07:06,370 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 269 transitions. [2021-11-22 19:07:06,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:06,370 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 269 transitions. [2021-11-22 19:07:06,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-22 19:07:06,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:07:06,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:07:06,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 19:07:06,371 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:07:06,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:07:06,372 INFO L85 PathProgramCache]: Analyzing trace with hash 433606968, now seen corresponding path program 1 times [2021-11-22 19:07:06,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:07:06,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534201870] [2021-11-22 19:07:06,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:07:06,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:07:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:07:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:07:27,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:07:27,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534201870] [2021-11-22 19:07:27,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534201870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:07:27,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:07:27,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-22 19:07:27,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870820268] [2021-11-22 19:07:27,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:07:27,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 19:07:27,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:07:27,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 19:07:27,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-22 19:07:27,266 INFO L87 Difference]: Start difference. First operand 236 states and 269 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:28,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:07:28,063 INFO L93 Difference]: Finished difference Result 256 states and 286 transitions. [2021-11-22 19:07:28,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 19:07:28,063 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-11-22 19:07:28,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:07:28,064 INFO L225 Difference]: With dead ends: 256 [2021-11-22 19:07:28,064 INFO L226 Difference]: Without dead ends: 240 [2021-11-22 19:07:28,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2021-11-22 19:07:28,066 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 379 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:07:28,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 864 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 19:07:28,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-22 19:07:28,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 179. [2021-11-22 19:07:28,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 176 states have (on average 1.1022727272727273) internal successors, (194), 178 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:28,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 194 transitions. [2021-11-22 19:07:28,093 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 194 transitions. Word has length 43 [2021-11-22 19:07:28,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:07:28,093 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 194 transitions. [2021-11-22 19:07:28,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:28,093 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 194 transitions. [2021-11-22 19:07:28,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 19:07:28,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:07:28,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:07:28,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 19:07:28,094 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:07:28,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:07:28,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1323277501, now seen corresponding path program 1 times [2021-11-22 19:07:28,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:07:28,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111917410] [2021-11-22 19:07:28,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:07:28,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:07:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:07:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:07:28,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:07:28,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111917410] [2021-11-22 19:07:28,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111917410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:07:28,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:07:28,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 19:07:28,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939905048] [2021-11-22 19:07:28,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:07:28,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 19:07:28,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:07:28,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 19:07:28,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:07:28,202 INFO L87 Difference]: Start difference. First operand 179 states and 194 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:28,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:07:28,313 INFO L93 Difference]: Finished difference Result 229 states and 246 transitions. [2021-11-22 19:07:28,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 19:07:28,314 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2021-11-22 19:07:28,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:07:28,314 INFO L225 Difference]: With dead ends: 229 [2021-11-22 19:07:28,314 INFO L226 Difference]: Without dead ends: 223 [2021-11-22 19:07:28,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-11-22 19:07:28,316 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 302 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:07:28,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 390 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:07:28,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-22 19:07:28,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 179. [2021-11-22 19:07:28,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 176 states have (on average 1.0965909090909092) internal successors, (193), 178 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:28,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 193 transitions. [2021-11-22 19:07:28,333 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 193 transitions. Word has length 44 [2021-11-22 19:07:28,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:07:28,333 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 193 transitions. [2021-11-22 19:07:28,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:28,333 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 193 transitions. [2021-11-22 19:07:28,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-22 19:07:28,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:07:28,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:07:28,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 19:07:28,334 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:07:28,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:07:28,334 INFO L85 PathProgramCache]: Analyzing trace with hash 2100853940, now seen corresponding path program 1 times [2021-11-22 19:07:28,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:07:28,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647102047] [2021-11-22 19:07:28,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:07:28,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:07:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:07:28,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:07:28,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:07:28,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647102047] [2021-11-22 19:07:28,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647102047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:07:28,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:07:28,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 19:07:28,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122491604] [2021-11-22 19:07:28,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:07:28,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 19:07:28,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:07:28,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 19:07:28,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 19:07:28,425 INFO L87 Difference]: Start difference. First operand 179 states and 193 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:28,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:07:28,481 INFO L93 Difference]: Finished difference Result 216 states and 232 transitions. [2021-11-22 19:07:28,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 19:07:28,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-22 19:07:28,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:07:28,482 INFO L225 Difference]: With dead ends: 216 [2021-11-22 19:07:28,482 INFO L226 Difference]: Without dead ends: 185 [2021-11-22 19:07:28,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:07:28,483 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 72 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:07:28,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 358 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:07:28,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-22 19:07:28,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 165. [2021-11-22 19:07:28,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 162 states have (on average 1.0925925925925926) internal successors, (177), 164 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:28,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 177 transitions. [2021-11-22 19:07:28,492 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 177 transitions. Word has length 45 [2021-11-22 19:07:28,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:07:28,492 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 177 transitions. [2021-11-22 19:07:28,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:28,492 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 177 transitions. [2021-11-22 19:07:28,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-22 19:07:28,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:07:28,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:07:28,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 19:07:28,493 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:07:28,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:07:28,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1477200140, now seen corresponding path program 1 times [2021-11-22 19:07:28,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:07:28,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107184443] [2021-11-22 19:07:28,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:07:28,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:07:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:07:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:07:28,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:07:28,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107184443] [2021-11-22 19:07:28,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107184443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:07:28,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:07:28,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 19:07:28,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465539575] [2021-11-22 19:07:28,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:07:28,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 19:07:28,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:07:28,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 19:07:28,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 19:07:28,653 INFO L87 Difference]: Start difference. First operand 165 states and 177 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:28,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:07:28,839 INFO L93 Difference]: Finished difference Result 185 states and 197 transitions. [2021-11-22 19:07:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 19:07:28,841 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-22 19:07:28,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:07:28,841 INFO L225 Difference]: With dead ends: 185 [2021-11-22 19:07:28,841 INFO L226 Difference]: Without dead ends: 156 [2021-11-22 19:07:28,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-22 19:07:28,842 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 36 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:07:28,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 546 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:07:28,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-22 19:07:28,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-11-22 19:07:28,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 153 states have (on average 1.091503267973856) internal successors, (167), 155 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:28,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 167 transitions. [2021-11-22 19:07:28,849 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 167 transitions. Word has length 45 [2021-11-22 19:07:28,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:07:28,850 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 167 transitions. [2021-11-22 19:07:28,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:28,850 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 167 transitions. [2021-11-22 19:07:28,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-22 19:07:28,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:07:28,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:07:28,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 19:07:28,854 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:07:28,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:07:28,854 INFO L85 PathProgramCache]: Analyzing trace with hash -23237443, now seen corresponding path program 1 times [2021-11-22 19:07:28,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:07:28,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801230039] [2021-11-22 19:07:28,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:07:28,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:07:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:07:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:07:29,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:07:29,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801230039] [2021-11-22 19:07:29,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801230039] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:07:29,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:07:29,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-22 19:07:29,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464628841] [2021-11-22 19:07:29,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:07:29,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-22 19:07:29,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:07:29,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-22 19:07:29,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-11-22 19:07:29,349 INFO L87 Difference]: Start difference. First operand 156 states and 167 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:30,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:07:30,026 INFO L93 Difference]: Finished difference Result 184 states and 195 transitions. [2021-11-22 19:07:30,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-22 19:07:30,027 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-22 19:07:30,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:07:30,027 INFO L225 Difference]: With dead ends: 184 [2021-11-22 19:07:30,027 INFO L226 Difference]: Without dead ends: 178 [2021-11-22 19:07:30,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=275, Invalid=717, Unknown=0, NotChecked=0, Total=992 [2021-11-22 19:07:30,028 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 342 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:07:30,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 656 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 19:07:30,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-22 19:07:30,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 156. [2021-11-22 19:07:30,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 153 states have (on average 1.091503267973856) internal successors, (167), 155 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:30,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 167 transitions. [2021-11-22 19:07:30,038 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 167 transitions. Word has length 45 [2021-11-22 19:07:30,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:07:30,039 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 167 transitions. [2021-11-22 19:07:30,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:30,039 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 167 transitions. [2021-11-22 19:07:30,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-22 19:07:30,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:07:30,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:07:30,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 19:07:30,040 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:07:30,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:07:30,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1124331407, now seen corresponding path program 1 times [2021-11-22 19:07:30,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:07:30,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331691815] [2021-11-22 19:07:30,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:07:30,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:07:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:07:30,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:07:30,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:07:30,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331691815] [2021-11-22 19:07:30,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331691815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:07:30,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:07:30,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-22 19:07:30,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289905650] [2021-11-22 19:07:30,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:07:30,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 19:07:30,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:07:30,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 19:07:30,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-22 19:07:30,556 INFO L87 Difference]: Start difference. First operand 156 states and 167 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:31,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:07:31,699 INFO L93 Difference]: Finished difference Result 210 states and 221 transitions. [2021-11-22 19:07:31,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 19:07:31,700 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-22 19:07:31,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:07:31,700 INFO L225 Difference]: With dead ends: 210 [2021-11-22 19:07:31,700 INFO L226 Difference]: Without dead ends: 204 [2021-11-22 19:07:31,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2021-11-22 19:07:31,701 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 458 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:07:31,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 586 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 19:07:31,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-22 19:07:31,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 141. [2021-11-22 19:07:31,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 138 states have (on average 1.1014492753623188) internal successors, (152), 140 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:31,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 152 transitions. [2021-11-22 19:07:31,708 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 152 transitions. Word has length 45 [2021-11-22 19:07:31,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:07:31,708 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 152 transitions. [2021-11-22 19:07:31,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:31,709 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 152 transitions. [2021-11-22 19:07:31,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-22 19:07:31,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:07:31,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:07:31,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 19:07:31,710 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:07:31,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:07:31,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1788373026, now seen corresponding path program 1 times [2021-11-22 19:07:31,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:07:31,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029458792] [2021-11-22 19:07:31,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:07:31,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:07:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:07:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:07:31,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:07:31,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029458792] [2021-11-22 19:07:31,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029458792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:07:31,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:07:31,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 19:07:31,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392973956] [2021-11-22 19:07:31,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:07:31,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 19:07:31,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:07:31,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 19:07:31,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-22 19:07:31,911 INFO L87 Difference]: Start difference. First operand 141 states and 152 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:32,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:07:32,089 INFO L93 Difference]: Finished difference Result 166 states and 177 transitions. [2021-11-22 19:07:32,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 19:07:32,090 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-22 19:07:32,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:07:32,090 INFO L225 Difference]: With dead ends: 166 [2021-11-22 19:07:32,090 INFO L226 Difference]: Without dead ends: 123 [2021-11-22 19:07:32,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-11-22 19:07:32,091 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 26 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:07:32,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 493 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:07:32,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-22 19:07:32,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-11-22 19:07:32,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.1) internal successors, (132), 122 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:32,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 132 transitions. [2021-11-22 19:07:32,097 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 132 transitions. Word has length 45 [2021-11-22 19:07:32,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:07:32,097 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 132 transitions. [2021-11-22 19:07:32,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:07:32,097 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 132 transitions. [2021-11-22 19:07:32,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-22 19:07:32,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:07:32,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:07:32,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 19:07:32,098 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:07:32,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:07:32,098 INFO L85 PathProgramCache]: Analyzing trace with hash 619729676, now seen corresponding path program 1 times [2021-11-22 19:07:32,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:07:32,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558087270] [2021-11-22 19:07:32,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:07:32,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:07:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:08:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:08:20,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:08:20,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558087270] [2021-11-22 19:08:20,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558087270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:08:20,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:08:20,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-22 19:08:20,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054522594] [2021-11-22 19:08:20,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:08:20,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 19:08:20,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:08:20,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 19:08:20,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-22 19:08:20,221 INFO L87 Difference]: Start difference. First operand 123 states and 132 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 17 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:08:21,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:08:21,634 INFO L93 Difference]: Finished difference Result 125 states and 134 transitions. [2021-11-22 19:08:21,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-22 19:08:21,635 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 17 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-22 19:08:21,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:08:21,635 INFO L225 Difference]: With dead ends: 125 [2021-11-22 19:08:21,635 INFO L226 Difference]: Without dead ends: 82 [2021-11-22 19:08:21,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2021-11-22 19:08:21,636 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 407 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:08:21,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 421 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 19:08:21,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-22 19:08:21,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-11-22 19:08:21,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 80 states have (on average 1.1) internal successors, (88), 81 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:08:21,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2021-11-22 19:08:21,641 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 46 [2021-11-22 19:08:21,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:08:21,641 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2021-11-22 19:08:21,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 17 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:08:21,641 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2021-11-22 19:08:21,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-22 19:08:21,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:08:21,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:08:21,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 19:08:21,642 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:08:21,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:08:21,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1401999097, now seen corresponding path program 1 times [2021-11-22 19:08:21,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:08:21,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017857710] [2021-11-22 19:08:21,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:08:21,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:08:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:08:55,406 WARN L227 SmtUtils]: Spent 7.51s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 19:09:23,833 WARN L227 SmtUtils]: Spent 6.24s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 19:10:14,931 WARN L227 SmtUtils]: Spent 6.59s on a formula simplification that was a NOOP. DAG size: 174 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 19:10:55,775 WARN L227 SmtUtils]: Spent 8.61s on a formula simplification that was a NOOP. DAG size: 176 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 19:11:19,324 WARN L227 SmtUtils]: Spent 7.89s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 19:11:45,169 WARN L227 SmtUtils]: Spent 6.75s on a formula simplification that was a NOOP. DAG size: 169 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 19:11:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:11:45,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:11:45,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017857710] [2021-11-22 19:11:45,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017857710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:11:45,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:11:45,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-22 19:11:45,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438959685] [2021-11-22 19:11:45,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:11:45,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 19:11:45,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:11:45,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 19:11:45,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-11-22 19:11:45,239 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:11:48,271 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 19:11:50,282 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 19:12:02,370 WARN L227 SmtUtils]: Spent 12.01s on a formula simplification. DAG size of input: 211 DAG size of output: 204 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 19:12:07,955 WARN L227 SmtUtils]: Spent 5.50s on a formula simplification that was a NOOP. DAG size: 195 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 19:12:24,414 WARN L227 SmtUtils]: Spent 15.70s on a formula simplification. DAG size of input: 255 DAG size of output: 201 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 19:13:05,780 WARN L227 SmtUtils]: Spent 40.54s on a formula simplification. DAG size of input: 392 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 19:13:07,787 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 19:13:07,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:13:07,897 INFO L93 Difference]: Finished difference Result 102 states and 108 transitions. [2021-11-22 19:13:07,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-22 19:13:07,898 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-11-22 19:13:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:13:07,899 INFO L225 Difference]: With dead ends: 102 [2021-11-22 19:13:07,899 INFO L226 Difference]: Without dead ends: 94 [2021-11-22 19:13:07,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 119.3s TimeCoverageRelationStatistics Valid=186, Invalid=744, Unknown=0, NotChecked=0, Total=930 [2021-11-22 19:13:07,899 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 262 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-22 19:13:07,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 294 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 341 Invalid, 3 Unknown, 0 Unchecked, 7.6s Time] [2021-11-22 19:13:07,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-22 19:13:07,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 67. [2021-11-22 19:13:07,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 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) [2021-11-22 19:13:07,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2021-11-22 19:13:07,910 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 48 [2021-11-22 19:13:07,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:13:07,910 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2021-11-22 19:13:07,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:13:07,911 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2021-11-22 19:13:07,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-22 19:13:07,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:13:07,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:13:07,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 19:13:07,911 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:13:07,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:13:07,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1562728550, now seen corresponding path program 1 times [2021-11-22 19:13:07,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:13:07,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516785225] [2021-11-22 19:13:07,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:13:07,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:13:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:13:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:13:08,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:13:08,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516785225] [2021-11-22 19:13:08,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516785225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:13:08,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:13:08,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 19:13:08,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322592566] [2021-11-22 19:13:08,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:13:08,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 19:13:08,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:13:08,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 19:13:08,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:13:08,138 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:13:08,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:13:08,234 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2021-11-22 19:13:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 19:13:08,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-11-22 19:13:08,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:13:08,235 INFO L225 Difference]: With dead ends: 96 [2021-11-22 19:13:08,235 INFO L226 Difference]: Without dead ends: 90 [2021-11-22 19:13:08,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-22 19:13:08,236 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 98 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:13:08,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 203 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:13:08,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-22 19:13:08,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 54. [2021-11-22 19:13:08,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:13:08,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2021-11-22 19:13:08,242 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 48 [2021-11-22 19:13:08,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:13:08,242 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2021-11-22 19:13:08,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:13:08,243 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2021-11-22 19:13:08,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-22 19:13:08,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:13:08,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:13:08,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-22 19:13:08,243 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:13:08,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:13:08,244 INFO L85 PathProgramCache]: Analyzing trace with hash 778345297, now seen corresponding path program 1 times [2021-11-22 19:13:08,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:13:08,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152754965] [2021-11-22 19:13:08,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:13:08,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:13:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:13:08,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:13:08,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:13:08,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152754965] [2021-11-22 19:13:08,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152754965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:13:08,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:13:08,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 19:13:08,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360428363] [2021-11-22 19:13:08,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:13:08,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 19:13:08,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:13:08,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 19:13:08,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-22 19:13:08,449 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:13:08,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:13:08,755 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2021-11-22 19:13:08,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-22 19:13:08,756 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-11-22 19:13:08,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:13:08,756 INFO L225 Difference]: With dead ends: 74 [2021-11-22 19:13:08,756 INFO L226 Difference]: Without dead ends: 54 [2021-11-22 19:13:08,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-11-22 19:13:08,758 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 163 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:13:08,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 205 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:13:08,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-22 19:13:08,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2021-11-22 19:13:08,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:13:08,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2021-11-22 19:13:08,764 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 48 [2021-11-22 19:13:08,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:13:08,765 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2021-11-22 19:13:08,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:13:08,765 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2021-11-22 19:13:08,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-22 19:13:08,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:13:08,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:13:08,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-22 19:13:08,766 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:13:08,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:13:08,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1246696675, now seen corresponding path program 1 times [2021-11-22 19:13:08,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:13:08,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928126724] [2021-11-22 19:13:08,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:13:08,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:13:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:13:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:13:09,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:13:09,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928126724] [2021-11-22 19:13:09,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928126724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:13:09,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:13:09,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 19:13:09,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873767490] [2021-11-22 19:13:09,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:13:09,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 19:13:09,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:13:09,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 19:13:09,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-22 19:13:09,088 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:13:09,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:13:09,426 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2021-11-22 19:13:09,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 19:13:09,426 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-11-22 19:13:09,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:13:09,427 INFO L225 Difference]: With dead ends: 77 [2021-11-22 19:13:09,427 INFO L226 Difference]: Without dead ends: 52 [2021-11-22 19:13:09,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2021-11-22 19:13:09,427 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 221 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:13:09,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 144 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:13:09,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-22 19:13:09,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-22 19:13:09,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:13:09,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-11-22 19:13:09,432 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 48 [2021-11-22 19:13:09,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:13:09,432 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-11-22 19:13:09,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:13:09,432 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-11-22 19:13:09,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-22 19:13:09,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:13:09,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:13:09,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-22 19:13:09,433 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 19:13:09,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:13:09,433 INFO L85 PathProgramCache]: Analyzing trace with hash -540436652, now seen corresponding path program 1 times [2021-11-22 19:13:09,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:13:09,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548466707] [2021-11-22 19:13:09,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:13:09,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:13:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:13:10,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:13:10,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:13:10,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548466707] [2021-11-22 19:13:10,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548466707] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:13:10,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342562233] [2021-11-22 19:13:10,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:13:10,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:13:10,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:13:10,281 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) [2021-11-22 19:13:10,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 19:13:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:13:10,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-22 19:13:10,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:13:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:13:10,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:13:10,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342562233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:13:10,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:13:10,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 23 [2021-11-22 19:13:10,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746905881] [2021-11-22 19:13:10,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:13:10,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 19:13:10,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:13:10,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 19:13:10,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-11-22 19:13:10,868 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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) [2021-11-22 19:13:10,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:13:10,951 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-11-22 19:13:10,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 19:13:10,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 [2021-11-22 19:13:10,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:13:10,952 INFO L225 Difference]: With dead ends: 52 [2021-11-22 19:13:10,952 INFO L226 Difference]: Without dead ends: 0 [2021-11-22 19:13:10,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2021-11-22 19:13:10,952 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 10 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:13:10,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 148 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:13:10,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-22 19:13:10,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-22 19:13:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:13:10,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-22 19:13:10,953 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2021-11-22 19:13:10,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:13:10,953 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 19:13:10,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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) [2021-11-22 19:13:10,953 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-22 19:13:10,953 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-22 19:13:10,955 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-22 19:13:10,955 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-22 19:13:10,955 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-22 19:13:10,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 19:13:11,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:13:11,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Killed by 15