./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_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 ce5362e495562dfaea277a751eacbf753e9d90aa85c88e38ea1b10dbc078ec49 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:46:31,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:46:31,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:46:31,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:46:31,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:46:31,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:46:31,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:46:31,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:46:31,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:46:31,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:46:31,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:46:31,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:46:31,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:46:31,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:46:31,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:46:31,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:46:31,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:46:31,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:46:31,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:46:31,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:46:31,233 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:46:31,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:46:31,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:46:31,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:46:31,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:46:31,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:46:31,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:46:31,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:46:31,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:46:31,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:46:31,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:46:31,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:46:31,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:46:31,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:46:31,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:46:31,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:46:31,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:46:31,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:46:31,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:46:31,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:46:31,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:46:31,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:46:31,260 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:46:31,289 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:46:31,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:46:31,290 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:46:31,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:46:31,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:46:31,291 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:46:31,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:46:31,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:46:31,293 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:46:31,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:46:31,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:46:31,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:46:31,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:46:31,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:46:31,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:46:31,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:46:31,295 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:46:31,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:46:31,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:46:31,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:46:31,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:46:31,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:46:31,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:46:31,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:46:31,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:46:31,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:46:31,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:46:31,297 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:46:31,298 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:46:31,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:46:31,298 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce5362e495562dfaea277a751eacbf753e9d90aa85c88e38ea1b10dbc078ec49 [2022-07-21 09:46:31,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:46:31,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:46:31,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:46:31,627 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:46:31,629 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:46:31,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i [2022-07-21 09:46:31,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e83a6be4/37828babf1d847e88b8aed18237f477a/FLAG9d622c661 [2022-07-21 09:46:32,375 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:46:32,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i [2022-07-21 09:46:32,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e83a6be4/37828babf1d847e88b8aed18237f477a/FLAG9d622c661 [2022-07-21 09:46:32,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e83a6be4/37828babf1d847e88b8aed18237f477a [2022-07-21 09:46:32,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:46:32,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:46:32,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:46:32,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:46:32,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:46:32,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:46:32" (1/1) ... [2022-07-21 09:46:32,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bf7e334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:46:32, skipping insertion in model container [2022-07-21 09:46:32,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:46:32" (1/1) ... [2022-07-21 09:46:32,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:46:32,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:46:32,818 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_linked_list_rend_harness.i[4494,4507] [2022-07-21 09:46:32,825 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_linked_list_rend_harness.i[4554,4567] [2022-07-21 09:46:33,340 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,341 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,341 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,342 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,343 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,354 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,354 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,356 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,356 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,358 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,358 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,359 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,359 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,587 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:46:33,592 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:46:33,593 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:46:33,595 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:46:33,599 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:46:33,600 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:46:33,601 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:46:33,602 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:46:33,602 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:46:33,605 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:46:33,707 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:46:33,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:46:33,736 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:46:33,757 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_linked_list_rend_harness.i[4494,4507] [2022-07-21 09:46:33,766 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_linked_list_rend_harness.i[4554,4567] [2022-07-21 09:46:33,814 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,826 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,826 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,827 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,827 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,833 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,836 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,837 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,837 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,838 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,842 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,842 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,843 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:46:33,890 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:46:33,899 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:46:33,901 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:46:33,902 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:46:33,902 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:46:33,905 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:46:33,906 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:46:33,908 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:46:33,909 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:46:33,909 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:46:33,935 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:46:33,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:46:34,206 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:46:34,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:46:34 WrapperNode [2022-07-21 09:46:34,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:46:34,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:46:34,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:46:34,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:46:34,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:46:34" (1/1) ... [2022-07-21 09:46:34,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:46:34" (1/1) ... [2022-07-21 09:46:34,340 INFO L137 Inliner]: procedures = 679, calls = 1040, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 136 [2022-07-21 09:46:34,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:46:34,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:46:34,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:46:34,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:46:34,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:46:34" (1/1) ... [2022-07-21 09:46:34,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:46:34" (1/1) ... [2022-07-21 09:46:34,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:46:34" (1/1) ... [2022-07-21 09:46:34,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:46:34" (1/1) ... [2022-07-21 09:46:34,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:46:34" (1/1) ... [2022-07-21 09:46:34,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:46:34" (1/1) ... [2022-07-21 09:46:34,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:46:34" (1/1) ... [2022-07-21 09:46:34,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:46:34,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:46:34,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:46:34,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:46:34,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:46:34" (1/1) ... [2022-07-21 09:46:34,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:46:34,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:46:34,449 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) [2022-07-21 09:46:34,469 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 [2022-07-21 09:46:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:46:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:46:34,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:46:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-07-21 09:46:34,488 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-07-21 09:46:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:46:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-07-21 09:46:34,489 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-07-21 09:46:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:46:34,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:46:34,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:46:34,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:46:34,490 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:46:34,490 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:46:34,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:46:34,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:46:34,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:46:34,491 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-21 09:46:34,491 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-21 09:46:34,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:46:34,726 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:46:34,727 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:46:34,965 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:46:34,970 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:46:34,971 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 09:46:34,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:46:34 BoogieIcfgContainer [2022-07-21 09:46:34,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:46:34,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:46:34,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:46:34,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:46:34,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:46:32" (1/3) ... [2022-07-21 09:46:34,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bbe087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:46:34, skipping insertion in model container [2022-07-21 09:46:34,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:46:34" (2/3) ... [2022-07-21 09:46:34,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bbe087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:46:34, skipping insertion in model container [2022-07-21 09:46:34,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:46:34" (3/3) ... [2022-07-21 09:46:34,979 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_rend_harness.i [2022-07-21 09:46:34,991 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:46:34,991 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:46:35,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:46:35,051 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@76f8be1e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4ab061ae [2022-07-21 09:46:35,052 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 09:46:35,056 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 49 states have internal predecessors, (65), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-21 09:46:35,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 09:46:35,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:46:35,066 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:46:35,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:46:35,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:46:35,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2107862704, now seen corresponding path program 1 times [2022-07-21 09:46:35,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:46:35,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227575176] [2022-07-21 09:46:35,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:35,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:46:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:35,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:46:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:35,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:46:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:35,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:46:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:35,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 09:46:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:35,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:46:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:35,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 09:46:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:35,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:46:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:35,515 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 09:46:35,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:46:35,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227575176] [2022-07-21 09:46:35,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227575176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:46:35,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:46:35,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 09:46:35,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137486887] [2022-07-21 09:46:35,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:46:35,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 09:46:35,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:46:35,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 09:46:35,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 09:46:35,558 INFO L87 Difference]: Start difference. First operand has 68 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 49 states have internal predecessors, (65), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 09:46:35,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:46:35,583 INFO L93 Difference]: Finished difference Result 128 states and 184 transitions. [2022-07-21 09:46:35,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 09:46:35,585 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-07-21 09:46:35,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:46:35,591 INFO L225 Difference]: With dead ends: 128 [2022-07-21 09:46:35,591 INFO L226 Difference]: Without dead ends: 63 [2022-07-21 09:46:35,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 09:46:35,597 INFO L413 NwaCegarLoop]: 87 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, 87 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 [2022-07-21 09:46:35,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:46:35,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-07-21 09:46:35,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-07-21 09:46:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 45 states have internal predecessors, (57), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-21 09:46:35,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2022-07-21 09:46:35,638 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 68 [2022-07-21 09:46:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:46:35,638 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2022-07-21 09:46:35,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 09:46:35,639 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2022-07-21 09:46:35,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 09:46:35,648 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:46:35,648 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:46:35,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:46:35,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:46:35,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:46:35,655 INFO L85 PathProgramCache]: Analyzing trace with hash 900796622, now seen corresponding path program 1 times [2022-07-21 09:46:35,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:46:35,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290627543] [2022-07-21 09:46:35,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:35,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:46:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:35,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:46:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:35,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:46:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:35,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:46:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:35,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 09:46:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:35,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:46:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:35,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 09:46:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:35,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:46:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-21 09:46:36,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:46:36,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290627543] [2022-07-21 09:46:36,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290627543] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:46:36,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700631997] [2022-07-21 09:46:36,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:36,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:36,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:46:36,016 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) [2022-07-21 09:46:36,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:46:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:36,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-21 09:46:36,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:46:36,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:46:36,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-07-21 09:46:36,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:46:36,300 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-07-21 09:46:36,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:46:36,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:46:36,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:46:36,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-07-21 09:46:36,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:46:36,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:46:36,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:46:36,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-07-21 09:46:36,694 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 09:46:36,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:46:36,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700631997] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:46:36,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:46:36,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2022-07-21 09:46:36,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732515025] [2022-07-21 09:46:36,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:46:36,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:46:36,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:46:36,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:46:36,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:46:36,698 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 09:46:36,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:46:36,876 INFO L93 Difference]: Finished difference Result 144 states and 195 transitions. [2022-07-21 09:46:36,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:46:36,877 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2022-07-21 09:46:36,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:46:36,881 INFO L225 Difference]: With dead ends: 144 [2022-07-21 09:46:36,882 INFO L226 Difference]: Without dead ends: 93 [2022-07-21 09:46:36,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:46:36,883 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 32 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:46:36,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 276 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 27 Unchecked, 0.1s Time] [2022-07-21 09:46:36,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-07-21 09:46:36,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 79. [2022-07-21 09:46:36,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 60 states have internal predecessors, (77), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) [2022-07-21 09:46:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 105 transitions. [2022-07-21 09:46:36,898 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 105 transitions. Word has length 68 [2022-07-21 09:46:36,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:46:36,898 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 105 transitions. [2022-07-21 09:46:36,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 09:46:36,899 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 105 transitions. [2022-07-21 09:46:36,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 09:46:36,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:46:36,901 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:46:36,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 09:46:37,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:37,128 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:46:37,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:46:37,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1148591220, now seen corresponding path program 1 times [2022-07-21 09:46:37,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:46:37,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926877849] [2022-07-21 09:46:37,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:37,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:46:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:37,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:46:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:37,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:46:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:37,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:46:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:37,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 09:46:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:37,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:46:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:37,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 09:46:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:37,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:46:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-21 09:46:37,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:46:37,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926877849] [2022-07-21 09:46:37,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926877849] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:46:37,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635569785] [2022-07-21 09:46:37,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:37,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:37,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:46:37,342 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:46:37,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:46:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:37,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-21 09:46:37,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:46:37,649 INFO L356 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2022-07-21 09:46:37,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 78 [2022-07-21 09:46:37,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-07-21 09:46:37,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-07-21 09:46:37,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 26 [2022-07-21 09:46:37,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-21 09:46:39,927 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 09:46:39,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:46:39,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635569785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:46:39,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:46:39,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2022-07-21 09:46:39,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016745470] [2022-07-21 09:46:39,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:46:39,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 09:46:39,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:46:39,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 09:46:39,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=174, Unknown=3, NotChecked=0, Total=210 [2022-07-21 09:46:39,930 INFO L87 Difference]: Start difference. First operand 79 states and 105 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 09:46:40,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:46:40,156 INFO L93 Difference]: Finished difference Result 198 states and 269 transitions. [2022-07-21 09:46:40,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 09:46:40,156 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2022-07-21 09:46:40,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:46:40,158 INFO L225 Difference]: With dead ends: 198 [2022-07-21 09:46:40,158 INFO L226 Difference]: Without dead ends: 143 [2022-07-21 09:46:40,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=249, Unknown=5, NotChecked=0, Total=306 [2022-07-21 09:46:40,160 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 159 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:46:40,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 671 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 35 Invalid, 0 Unknown, 138 Unchecked, 0.1s Time] [2022-07-21 09:46:40,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-07-21 09:46:40,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 137. [2022-07-21 09:46:40,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 102 states have (on average 1.3431372549019607) internal successors, (137), 104 states have internal predecessors, (137), 24 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (26), 22 states have call predecessors, (26), 22 states have call successors, (26) [2022-07-21 09:46:40,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 187 transitions. [2022-07-21 09:46:40,176 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 187 transitions. Word has length 68 [2022-07-21 09:46:40,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:46:40,176 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 187 transitions. [2022-07-21 09:46:40,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 09:46:40,177 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 187 transitions. [2022-07-21 09:46:40,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 09:46:40,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:46:40,180 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:46:40,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-21 09:46:40,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-21 09:46:40,399 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:46:40,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:46:40,399 INFO L85 PathProgramCache]: Analyzing trace with hash 779681482, now seen corresponding path program 1 times [2022-07-21 09:46:40,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:46:40,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503894515] [2022-07-21 09:46:40,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:40,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:46:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:40,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:46:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:40,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:46:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:40,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:46:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:40,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 09:46:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:40,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:46:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:40,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 09:46:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:40,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:46:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:40,533 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-21 09:46:40,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:46:40,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503894515] [2022-07-21 09:46:40,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503894515] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:46:40,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346900761] [2022-07-21 09:46:40,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:40,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:40,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:46:40,536 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:46:40,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:46:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:40,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-21 09:46:40,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:46:40,725 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:46:40,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 09:46:40,735 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:46:40,736 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 09:46:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 09:46:41,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:46:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 09:46:42,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346900761] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:46:42,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:46:42,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 12] total 28 [2022-07-21 09:46:42,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113034288] [2022-07-21 09:46:42,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:46:42,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-21 09:46:42,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:46:42,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-21 09:46:42,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2022-07-21 09:46:42,042 INFO L87 Difference]: Start difference. First operand 137 states and 187 transitions. Second operand has 28 states, 27 states have (on average 3.4444444444444446) internal successors, (93), 25 states have internal predecessors, (93), 9 states have call successors, (19), 3 states have call predecessors, (19), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2022-07-21 09:46:43,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:46:43,772 INFO L93 Difference]: Finished difference Result 409 states and 690 transitions. [2022-07-21 09:46:43,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-21 09:46:43,773 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.4444444444444446) internal successors, (93), 25 states have internal predecessors, (93), 9 states have call successors, (19), 3 states have call predecessors, (19), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) Word has length 68 [2022-07-21 09:46:43,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:46:43,778 INFO L225 Difference]: With dead ends: 409 [2022-07-21 09:46:43,778 INFO L226 Difference]: Without dead ends: 307 [2022-07-21 09:46:43,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 131 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=401, Invalid=2905, Unknown=0, NotChecked=0, Total=3306 [2022-07-21 09:46:43,782 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 230 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 218 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 09:46:43,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 1394 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1205 Invalid, 0 Unknown, 218 Unchecked, 0.9s Time] [2022-07-21 09:46:43,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-07-21 09:46:43,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 230. [2022-07-21 09:46:43,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 171 states have (on average 1.3567251461988303) internal successors, (232), 179 states have internal predecessors, (232), 38 states have call successors, (38), 14 states have call predecessors, (38), 20 states have return successors, (106), 36 states have call predecessors, (106), 36 states have call successors, (106) [2022-07-21 09:46:43,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 376 transitions. [2022-07-21 09:46:43,850 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 376 transitions. Word has length 68 [2022-07-21 09:46:43,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:46:43,851 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 376 transitions. [2022-07-21 09:46:43,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.4444444444444446) internal successors, (93), 25 states have internal predecessors, (93), 9 states have call successors, (19), 3 states have call predecessors, (19), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2022-07-21 09:46:43,852 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 376 transitions. [2022-07-21 09:46:43,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-21 09:46:43,860 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:46:43,860 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:46:43,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-21 09:46:44,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:44,083 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:46:44,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:46:44,084 INFO L85 PathProgramCache]: Analyzing trace with hash 577933322, now seen corresponding path program 1 times [2022-07-21 09:46:44,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:46:44,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361035851] [2022-07-21 09:46:44,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:44,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:46:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:44,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:46:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:44,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:46:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:44,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:46:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:44,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 09:46:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:44,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:46:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:44,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 09:46:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:44,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 09:46:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:44,204 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 09:46:44,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:46:44,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361035851] [2022-07-21 09:46:44,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361035851] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:46:44,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420365672] [2022-07-21 09:46:44,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:44,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:44,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:46:44,207 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:46:44,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:46:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:44,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:46:44,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:46:44,406 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 09:46:44,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:46:44,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420365672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:46:44,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:46:44,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-07-21 09:46:44,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700714982] [2022-07-21 09:46:44,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:46:44,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:46:44,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:46:44,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:46:44,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:46:44,409 INFO L87 Difference]: Start difference. First operand 230 states and 376 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 09:46:44,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:46:44,549 INFO L93 Difference]: Finished difference Result 423 states and 733 transitions. [2022-07-21 09:46:44,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:46:44,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-07-21 09:46:44,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:46:44,553 INFO L225 Difference]: With dead ends: 423 [2022-07-21 09:46:44,553 INFO L226 Difference]: Without dead ends: 242 [2022-07-21 09:46:44,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:46:44,555 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 105 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:46:44,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 239 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:46:44,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-07-21 09:46:44,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2022-07-21 09:46:44,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 179 states have (on average 1.329608938547486) internal successors, (238), 191 states have internal predecessors, (238), 38 states have call successors, (38), 14 states have call predecessors, (38), 24 states have return successors, (137), 36 states have call predecessors, (137), 36 states have call successors, (137) [2022-07-21 09:46:44,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 413 transitions. [2022-07-21 09:46:44,587 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 413 transitions. Word has length 70 [2022-07-21 09:46:44,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:46:44,588 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 413 transitions. [2022-07-21 09:46:44,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 09:46:44,588 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 413 transitions. [2022-07-21 09:46:44,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 09:46:44,590 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:46:44,591 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:46:44,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-21 09:46:44,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:44,803 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:46:44,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:46:44,804 INFO L85 PathProgramCache]: Analyzing trace with hash -34807881, now seen corresponding path program 1 times [2022-07-21 09:46:44,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:46:44,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131371674] [2022-07-21 09:46:44,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:44,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:46:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:44,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:46:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:44,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:46:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:44,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:46:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:44,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:46:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:44,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:46:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:44,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:46:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:44,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:46:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:44,934 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-21 09:46:44,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:46:44,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131371674] [2022-07-21 09:46:44,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131371674] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:46:44,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298962374] [2022-07-21 09:46:44,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:44,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:44,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:46:44,937 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:46:44,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:46:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:45,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:46:45,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:46:45,148 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 09:46:45,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:46:45,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298962374] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:46:45,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:46:45,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2022-07-21 09:46:45,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961181880] [2022-07-21 09:46:45,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:46:45,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:46:45,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:46:45,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:46:45,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:46:45,151 INFO L87 Difference]: Start difference. First operand 242 states and 413 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 09:46:45,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:46:45,360 INFO L93 Difference]: Finished difference Result 485 states and 903 transitions. [2022-07-21 09:46:45,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:46:45,361 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), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-21 09:46:45,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:46:45,365 INFO L225 Difference]: With dead ends: 485 [2022-07-21 09:46:45,365 INFO L226 Difference]: Without dead ends: 290 [2022-07-21 09:46:45,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:46:45,371 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 142 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:46:45,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 279 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:46:45,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-07-21 09:46:45,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 250. [2022-07-21 09:46:45,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 187 states have (on average 1.3262032085561497) internal successors, (248), 199 states have internal predecessors, (248), 38 states have call successors, (38), 14 states have call predecessors, (38), 24 states have return successors, (137), 36 states have call predecessors, (137), 36 states have call successors, (137) [2022-07-21 09:46:45,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 423 transitions. [2022-07-21 09:46:45,410 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 423 transitions. Word has length 72 [2022-07-21 09:46:45,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:46:45,411 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 423 transitions. [2022-07-21 09:46:45,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 09:46:45,411 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 423 transitions. [2022-07-21 09:46:45,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 09:46:45,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:46:45,414 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:46:45,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 09:46:45,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:45,629 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:46:45,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:46:45,630 INFO L85 PathProgramCache]: Analyzing trace with hash 387052583, now seen corresponding path program 1 times [2022-07-21 09:46:45,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:46:45,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353972810] [2022-07-21 09:46:45,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:45,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:46:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:45,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:46:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:45,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:46:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:45,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:46:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:45,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:46:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:45,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:46:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:45,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:46:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:45,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:46:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:45,746 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-21 09:46:45,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:46:45,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353972810] [2022-07-21 09:46:45,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353972810] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:46:45,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165694337] [2022-07-21 09:46:45,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:45,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:45,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:46:45,748 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:46:45,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 09:46:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:45,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 09:46:45,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:46:45,899 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 09:46:45,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:46:45,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165694337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:46:45,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:46:45,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-21 09:46:45,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312245907] [2022-07-21 09:46:45,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:46:45,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:46:45,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:46:45,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:46:45,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:46:45,901 INFO L87 Difference]: Start difference. First operand 250 states and 423 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 09:46:45,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:46:45,941 INFO L93 Difference]: Finished difference Result 481 states and 932 transitions. [2022-07-21 09:46:45,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:46:45,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-07-21 09:46:45,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:46:45,945 INFO L225 Difference]: With dead ends: 481 [2022-07-21 09:46:45,945 INFO L226 Difference]: Without dead ends: 278 [2022-07-21 09:46:45,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:46:45,948 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 6 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:46:45,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:46:45,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-07-21 09:46:45,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 243. [2022-07-21 09:46:45,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 182 states have (on average 1.3241758241758241) internal successors, (241), 192 states have internal predecessors, (241), 38 states have call successors, (38), 14 states have call predecessors, (38), 22 states have return successors, (135), 36 states have call predecessors, (135), 36 states have call successors, (135) [2022-07-21 09:46:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 414 transitions. [2022-07-21 09:46:45,985 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 414 transitions. Word has length 73 [2022-07-21 09:46:45,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:46:45,985 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 414 transitions. [2022-07-21 09:46:45,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 09:46:45,985 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 414 transitions. [2022-07-21 09:46:45,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-21 09:46:45,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:46:45,989 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:46:46,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 09:46:46,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:46,208 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:46:46,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:46:46,209 INFO L85 PathProgramCache]: Analyzing trace with hash -186702901, now seen corresponding path program 1 times [2022-07-21 09:46:46,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:46:46,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957263725] [2022-07-21 09:46:46,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:46,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:46:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:46,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:46:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:46,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:46:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:46,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 09:46:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:46,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:46:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:46,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 09:46:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:46,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:46:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:46,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 09:46:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:46,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:46:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:46,372 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 09:46:46,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:46:46,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957263725] [2022-07-21 09:46:46,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957263725] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:46:46,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441455305] [2022-07-21 09:46:46,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:46,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:46,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:46:46,374 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:46:46,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 09:46:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:46,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-21 09:46:46,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:46:46,585 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:46:46,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 09:46:46,599 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:46:46,599 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 09:46:47,231 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 09:46:47,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:46:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 09:46:47,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441455305] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:46:47,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:46:47,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14, 10] total 26 [2022-07-21 09:46:47,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829642096] [2022-07-21 09:46:47,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:46:47,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:46:47,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:46:47,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:46:47,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:46:47,685 INFO L87 Difference]: Start difference. First operand 243 states and 414 transitions. Second operand has 26 states, 25 states have (on average 4.8) internal successors, (120), 23 states have internal predecessors, (120), 10 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2022-07-21 09:46:48,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:46:48,443 INFO L93 Difference]: Finished difference Result 632 states and 1329 transitions. [2022-07-21 09:46:48,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-21 09:46:48,444 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.8) internal successors, (120), 23 states have internal predecessors, (120), 10 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) Word has length 83 [2022-07-21 09:46:48,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:46:48,448 INFO L225 Difference]: With dead ends: 632 [2022-07-21 09:46:48,448 INFO L226 Difference]: Without dead ends: 425 [2022-07-21 09:46:48,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 164 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=306, Invalid=2046, Unknown=0, NotChecked=0, Total=2352 [2022-07-21 09:46:48,452 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 150 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 211 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:46:48,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1070 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 478 Invalid, 0 Unknown, 211 Unchecked, 0.3s Time] [2022-07-21 09:46:48,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-07-21 09:46:48,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 359. [2022-07-21 09:46:48,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 271 states have (on average 1.3321033210332103) internal successors, (361), 288 states have internal predecessors, (361), 50 states have call successors, (50), 22 states have call predecessors, (50), 37 states have return successors, (247), 48 states have call predecessors, (247), 48 states have call successors, (247) [2022-07-21 09:46:48,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 658 transitions. [2022-07-21 09:46:48,494 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 658 transitions. Word has length 83 [2022-07-21 09:46:48,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:46:48,495 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 658 transitions. [2022-07-21 09:46:48,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.8) internal successors, (120), 23 states have internal predecessors, (120), 10 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2022-07-21 09:46:48,495 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 658 transitions. [2022-07-21 09:46:48,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-21 09:46:48,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:46:48,499 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:46:48,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 09:46:48,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:48,718 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:46:48,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:46:48,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1220157194, now seen corresponding path program 1 times [2022-07-21 09:46:48,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:46:48,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922254035] [2022-07-21 09:46:48,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:48,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:46:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:48,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:46:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:48,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:46:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:48,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 09:46:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:48,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:46:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:48,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:46:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:48,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:46:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:48,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:46:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:48,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:46:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:48,877 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 09:46:48,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:46:48,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922254035] [2022-07-21 09:46:48,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922254035] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:46:48,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669907933] [2022-07-21 09:46:48,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:48,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:48,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:46:48,880 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:46:48,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 09:46:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:49,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-21 09:46:49,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:46:49,119 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:46:49,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 09:46:49,128 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:46:49,128 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 09:46:50,037 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| Int) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|) 0))) (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| Int) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|) 0)))) is different from true [2022-07-21 09:46:50,125 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 09:46:50,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:46:50,199 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 09:46:50,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669907933] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:46:50,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:46:50,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 8] total 18 [2022-07-21 09:46:50,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964101072] [2022-07-21 09:46:50,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:46:50,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 09:46:50,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:46:50,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 09:46:50,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=228, Unknown=1, NotChecked=30, Total=306 [2022-07-21 09:46:50,201 INFO L87 Difference]: Start difference. First operand 359 states and 658 transitions. Second operand has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-21 09:46:50,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:46:50,771 INFO L93 Difference]: Finished difference Result 858 states and 1812 transitions. [2022-07-21 09:46:50,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:46:50,772 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) Word has length 85 [2022-07-21 09:46:50,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:46:50,778 INFO L225 Difference]: With dead ends: 858 [2022-07-21 09:46:50,778 INFO L226 Difference]: Without dead ends: 543 [2022-07-21 09:46:50,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=110, Invalid=445, Unknown=1, NotChecked=44, Total=600 [2022-07-21 09:46:50,782 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 195 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 210 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:46:50,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 771 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 558 Invalid, 0 Unknown, 210 Unchecked, 0.4s Time] [2022-07-21 09:46:50,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-07-21 09:46:50,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 384. [2022-07-21 09:46:50,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 293 states have (on average 1.341296928327645) internal successors, (393), 310 states have internal predecessors, (393), 52 states have call successors, (52), 23 states have call predecessors, (52), 38 states have return successors, (251), 50 states have call predecessors, (251), 50 states have call successors, (251) [2022-07-21 09:46:50,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 696 transitions. [2022-07-21 09:46:50,838 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 696 transitions. Word has length 85 [2022-07-21 09:46:50,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:46:50,838 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 696 transitions. [2022-07-21 09:46:50,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-21 09:46:50,839 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 696 transitions. [2022-07-21 09:46:50,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-21 09:46:50,842 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:46:50,842 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:46:50,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 09:46:51,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-21 09:46:51,064 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:46:51,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:46:51,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1637553800, now seen corresponding path program 1 times [2022-07-21 09:46:51,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:46:51,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711110621] [2022-07-21 09:46:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:51,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:46:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:51,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:46:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:51,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:46:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:51,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 09:46:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:51,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:46:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:51,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:46:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:51,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:46:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:51,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:46:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:51,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:46:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:51,203 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 09:46:51,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:46:51,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711110621] [2022-07-21 09:46:51,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711110621] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:46:51,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583056109] [2022-07-21 09:46:51,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:51,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:51,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:46:51,205 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:46:51,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 09:46:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:51,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:46:51,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:46:51,371 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-21 09:46:51,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:46:51,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583056109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:46:51,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:46:51,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-07-21 09:46:51,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400810463] [2022-07-21 09:46:51,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:46:51,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:46:51,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:46:51,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:46:51,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:46:51,374 INFO L87 Difference]: Start difference. First operand 384 states and 696 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 09:46:51,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:46:51,405 INFO L93 Difference]: Finished difference Result 674 states and 1261 transitions. [2022-07-21 09:46:51,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:46:51,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 85 [2022-07-21 09:46:51,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:46:51,409 INFO L225 Difference]: With dead ends: 674 [2022-07-21 09:46:51,410 INFO L226 Difference]: Without dead ends: 365 [2022-07-21 09:46:51,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:46:51,413 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 8 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:46:51,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 244 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:46:51,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-07-21 09:46:51,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 355. [2022-07-21 09:46:51,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 264 states have (on average 1.3068181818181819) internal successors, (345), 281 states have internal predecessors, (345), 52 states have call successors, (52), 23 states have call predecessors, (52), 38 states have return successors, (251), 50 states have call predecessors, (251), 50 states have call successors, (251) [2022-07-21 09:46:51,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 648 transitions. [2022-07-21 09:46:51,461 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 648 transitions. Word has length 85 [2022-07-21 09:46:51,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:46:51,461 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 648 transitions. [2022-07-21 09:46:51,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 09:46:51,462 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 648 transitions. [2022-07-21 09:46:51,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-21 09:46:51,465 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:46:51,465 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:46:51,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-21 09:46:51,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 09:46:51,683 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:46:51,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:46:51,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1051920264, now seen corresponding path program 1 times [2022-07-21 09:46:51,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:46:51,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868045147] [2022-07-21 09:46:51,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:51,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:46:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:51,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:46:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:51,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:46:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:51,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:46:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:51,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:46:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:51,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 09:46:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:51,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:46:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:51,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 09:46:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:51,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:46:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 09:46:51,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:46:51,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868045147] [2022-07-21 09:46:51,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868045147] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:46:51,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455901829] [2022-07-21 09:46:51,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:51,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:51,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:46:51,896 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:46:51,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 09:46:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:52,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:46:52,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:46:52,076 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 09:46:52,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:46:52,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455901829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:46:52,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:46:52,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-21 09:46:52,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202437911] [2022-07-21 09:46:52,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:46:52,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:46:52,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:46:52,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:46:52,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:46:52,079 INFO L87 Difference]: Start difference. First operand 355 states and 648 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 09:46:52,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:46:52,107 INFO L93 Difference]: Finished difference Result 536 states and 1019 transitions. [2022-07-21 09:46:52,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:46:52,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2022-07-21 09:46:52,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:46:52,109 INFO L225 Difference]: With dead ends: 536 [2022-07-21 09:46:52,109 INFO L226 Difference]: Without dead ends: 208 [2022-07-21 09:46:52,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:46:52,114 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 2 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:46:52,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 235 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:46:52,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-21 09:46:52,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 177. [2022-07-21 09:46:52,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 131 states have (on average 1.1984732824427482) internal successors, (157), 140 states have internal predecessors, (157), 26 states have call successors, (26), 12 states have call predecessors, (26), 19 states have return successors, (62), 24 states have call predecessors, (62), 25 states have call successors, (62) [2022-07-21 09:46:52,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 245 transitions. [2022-07-21 09:46:52,127 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 245 transitions. Word has length 83 [2022-07-21 09:46:52,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:46:52,127 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 245 transitions. [2022-07-21 09:46:52,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 09:46:52,127 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 245 transitions. [2022-07-21 09:46:52,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 09:46:52,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:46:52,129 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:46:52,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 09:46:52,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 09:46:52,351 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:46:52,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:46:52,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1102022726, now seen corresponding path program 1 times [2022-07-21 09:46:52,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:46:52,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309932352] [2022-07-21 09:46:52,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:52,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:46:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:52,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:46:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:52,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:46:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:52,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:46:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:52,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:46:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:52,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:46:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:52,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:46:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:52,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 09:46:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:52,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:46:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:52,504 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-21 09:46:52,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:46:52,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309932352] [2022-07-21 09:46:52,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309932352] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:46:52,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708432339] [2022-07-21 09:46:52,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:52,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:52,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:46:52,507 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:46:52,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 09:46:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:52,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 86 conjunts are in the unsatisfiable core [2022-07-21 09:46:52,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:46:52,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-07-21 09:46:52,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:46:52,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:46:53,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-07-21 09:46:53,898 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 09:46:53,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:46:54,621 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:46:54,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 493 treesize of output 477 [2022-07-21 09:46:54,629 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-21 09:46:54,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 589 treesize of output 565 [2022-07-21 09:46:54,637 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-21 09:46:54,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 565 treesize of output 553 [2022-07-21 09:46:54,711 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-21 09:46:54,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 90 [2022-07-21 09:46:54,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:46:54,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2022-07-21 09:46:54,752 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2022-07-21 09:46:54,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-07-21 09:46:54,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-07-21 09:46:54,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-07-21 09:46:54,875 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 09:46:54,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708432339] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:46:54,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:46:54,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 20, 17] total 39 [2022-07-21 09:46:54,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138830613] [2022-07-21 09:46:54,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:46:54,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-21 09:46:54,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:46:54,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-21 09:46:54,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1342, Unknown=0, NotChecked=0, Total=1482 [2022-07-21 09:46:54,878 INFO L87 Difference]: Start difference. First operand 177 states and 245 transitions. Second operand has 39 states, 38 states have (on average 3.6842105263157894) internal successors, (140), 36 states have internal predecessors, (140), 13 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (24), 11 states have call predecessors, (24), 13 states have call successors, (24) [2022-07-21 09:46:56,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:46:56,518 INFO L93 Difference]: Finished difference Result 407 states and 554 transitions. [2022-07-21 09:46:56,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-21 09:46:56,519 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 3.6842105263157894) internal successors, (140), 36 states have internal predecessors, (140), 13 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (24), 11 states have call predecessors, (24), 13 states have call successors, (24) Word has length 84 [2022-07-21 09:46:56,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:46:56,520 INFO L225 Difference]: With dead ends: 407 [2022-07-21 09:46:56,521 INFO L226 Difference]: Without dead ends: 221 [2022-07-21 09:46:56,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 150 SyntacticMatches, 7 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=432, Invalid=4124, Unknown=0, NotChecked=0, Total=4556 [2022-07-21 09:46:56,523 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 155 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 555 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:46:56,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 1761 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1117 Invalid, 0 Unknown, 555 Unchecked, 0.7s Time] [2022-07-21 09:46:56,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-07-21 09:46:56,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 184. [2022-07-21 09:46:56,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 133 states have (on average 1.1954887218045114) internal successors, (159), 142 states have internal predecessors, (159), 29 states have call successors, (29), 14 states have call predecessors, (29), 21 states have return successors, (69), 27 states have call predecessors, (69), 27 states have call successors, (69) [2022-07-21 09:46:56,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 257 transitions. [2022-07-21 09:46:56,542 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 257 transitions. Word has length 84 [2022-07-21 09:46:56,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:46:56,544 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 257 transitions. [2022-07-21 09:46:56,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 3.6842105263157894) internal successors, (140), 36 states have internal predecessors, (140), 13 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (24), 11 states have call predecessors, (24), 13 states have call successors, (24) [2022-07-21 09:46:56,544 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 257 transitions. [2022-07-21 09:46:56,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-21 09:46:56,545 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:46:56,546 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:46:56,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 09:46:56,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-21 09:46:56,759 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:46:56,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:46:56,760 INFO L85 PathProgramCache]: Analyzing trace with hash 742701248, now seen corresponding path program 1 times [2022-07-21 09:46:56,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:46:56,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134036885] [2022-07-21 09:46:56,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:56,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:46:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:56,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:46:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:56,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:46:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:56,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:46:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:56,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:46:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:56,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:46:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:56,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:46:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:56,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 09:46:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:56,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:46:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:56,994 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 09:46:56,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:46:56,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134036885] [2022-07-21 09:46:56,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134036885] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:46:56,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122745425] [2022-07-21 09:46:56,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:56,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:56,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:46:56,997 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:46:57,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 09:46:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:57,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:46:57,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:46:57,277 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 09:46:57,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:46:57,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122745425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:46:57,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:46:57,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-21 09:46:57,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851680730] [2022-07-21 09:46:57,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:46:57,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:46:57,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:46:57,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:46:57,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-21 09:46:57,279 INFO L87 Difference]: Start difference. First operand 184 states and 257 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 09:46:57,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:46:57,449 INFO L93 Difference]: Finished difference Result 290 states and 409 transitions. [2022-07-21 09:46:57,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:46:57,450 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 86 [2022-07-21 09:46:57,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:46:57,451 INFO L225 Difference]: With dead ends: 290 [2022-07-21 09:46:57,451 INFO L226 Difference]: Without dead ends: 181 [2022-07-21 09:46:57,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-07-21 09:46:57,453 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 109 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:46:57,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 277 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:46:57,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-21 09:46:57,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-07-21 09:46:57,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 131 states have (on average 1.183206106870229) internal successors, (155), 139 states have internal predecessors, (155), 29 states have call successors, (29), 14 states have call predecessors, (29), 20 states have return successors, (63), 27 states have call predecessors, (63), 27 states have call successors, (63) [2022-07-21 09:46:57,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 247 transitions. [2022-07-21 09:46:57,470 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 247 transitions. Word has length 86 [2022-07-21 09:46:57,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:46:57,470 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 247 transitions. [2022-07-21 09:46:57,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 09:46:57,471 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 247 transitions. [2022-07-21 09:46:57,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-21 09:46:57,472 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:46:57,472 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:46:57,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 09:46:57,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 09:46:57,694 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:46:57,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:46:57,694 INFO L85 PathProgramCache]: Analyzing trace with hash -2006332033, now seen corresponding path program 1 times [2022-07-21 09:46:57,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:46:57,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647048494] [2022-07-21 09:46:57,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:57,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:46:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:57,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:46:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:57,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:46:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:57,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:46:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:57,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:46:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:57,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:46:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:57,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:46:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:57,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:46:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:57,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:46:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:57,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:46:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-21 09:46:57,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:46:57,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647048494] [2022-07-21 09:46:57,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647048494] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:46:57,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580646945] [2022-07-21 09:46:57,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:57,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:57,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:46:57,876 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:46:57,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 09:46:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:58,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-21 09:46:58,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:46:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 09:46:58,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:46:58,353 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-21 09:46:58,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580646945] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:46:58,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:46:58,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 7] total 18 [2022-07-21 09:46:58,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839888956] [2022-07-21 09:46:58,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:46:58,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 09:46:58,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:46:58,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 09:46:58,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-07-21 09:46:58,356 INFO L87 Difference]: Start difference. First operand 181 states and 247 transitions. Second operand has 18 states, 15 states have (on average 4.866666666666666) internal successors, (73), 14 states have internal predecessors, (73), 5 states have call successors, (12), 2 states have call predecessors, (12), 8 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-21 09:46:58,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:46:58,541 INFO L93 Difference]: Finished difference Result 288 states and 410 transitions. [2022-07-21 09:46:58,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 09:46:58,542 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 4.866666666666666) internal successors, (73), 14 states have internal predecessors, (73), 5 states have call successors, (12), 2 states have call predecessors, (12), 8 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 97 [2022-07-21 09:46:58,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:46:58,544 INFO L225 Difference]: With dead ends: 288 [2022-07-21 09:46:58,544 INFO L226 Difference]: Without dead ends: 190 [2022-07-21 09:46:58,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-07-21 09:46:58,547 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 15 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:46:58,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1030 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:46:58,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-21 09:46:58,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 173. [2022-07-21 09:46:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 126 states have (on average 1.1825396825396826) internal successors, (149), 131 states have internal predecessors, (149), 29 states have call successors, (29), 14 states have call predecessors, (29), 17 states have return successors, (47), 27 states have call predecessors, (47), 27 states have call successors, (47) [2022-07-21 09:46:58,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2022-07-21 09:46:58,565 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 225 transitions. Word has length 97 [2022-07-21 09:46:58,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:46:58,565 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 225 transitions. [2022-07-21 09:46:58,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 4.866666666666666) internal successors, (73), 14 states have internal predecessors, (73), 5 states have call successors, (12), 2 states have call predecessors, (12), 8 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-21 09:46:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 225 transitions. [2022-07-21 09:46:58,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-21 09:46:58,567 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:46:58,567 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:46:58,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-07-21 09:46:58,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-21 09:46:58,783 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:46:58,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:46:58,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1654399678, now seen corresponding path program 1 times [2022-07-21 09:46:58,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:46:58,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709608954] [2022-07-21 09:46:58,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:58,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:46:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:58,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:46:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:58,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:46:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:58,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:46:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:58,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:46:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:58,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:46:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:58,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:46:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:59,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:46:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:59,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:46:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:59,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:46:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:59,168 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 33 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-21 09:46:59,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:46:59,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709608954] [2022-07-21 09:46:59,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709608954] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:46:59,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476933517] [2022-07-21 09:46:59,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:46:59,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:46:59,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:46:59,172 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:46:59,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 09:46:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:46:59,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-21 09:46:59,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:46:59,438 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:46:59,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 09:46:59,451 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:46:59,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 09:47:00,412 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 09:47:00,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:47:00,804 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-21 09:47:00,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476933517] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:47:00,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:47:00,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 12] total 30 [2022-07-21 09:47:00,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082947936] [2022-07-21 09:47:00,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:47:00,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-21 09:47:00,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:00,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-21 09:47:00,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-07-21 09:47:00,807 INFO L87 Difference]: Start difference. First operand 173 states and 225 transitions. Second operand has 30 states, 30 states have (on average 4.7) internal successors, (141), 28 states have internal predecessors, (141), 12 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 11 states have call predecessors, (24), 11 states have call successors, (24) [2022-07-21 09:47:01,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:01,836 INFO L93 Difference]: Finished difference Result 354 states and 448 transitions. [2022-07-21 09:47:01,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-21 09:47:01,837 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.7) internal successors, (141), 28 states have internal predecessors, (141), 12 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 11 states have call predecessors, (24), 11 states have call successors, (24) Word has length 100 [2022-07-21 09:47:01,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:01,839 INFO L225 Difference]: With dead ends: 354 [2022-07-21 09:47:01,839 INFO L226 Difference]: Without dead ends: 266 [2022-07-21 09:47:01,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 215 SyntacticMatches, 7 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=443, Invalid=2209, Unknown=0, NotChecked=0, Total=2652 [2022-07-21 09:47:01,842 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 222 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 281 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:01,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 949 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 290 Invalid, 0 Unknown, 281 Unchecked, 0.2s Time] [2022-07-21 09:47:01,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-07-21 09:47:01,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 254. [2022-07-21 09:47:01,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 196 states have (on average 1.1989795918367347) internal successors, (235), 203 states have internal predecessors, (235), 32 states have call successors, (32), 20 states have call predecessors, (32), 25 states have return successors, (49), 30 states have call predecessors, (49), 30 states have call successors, (49) [2022-07-21 09:47:01,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 316 transitions. [2022-07-21 09:47:01,870 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 316 transitions. Word has length 100 [2022-07-21 09:47:01,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:01,871 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 316 transitions. [2022-07-21 09:47:01,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.7) internal successors, (141), 28 states have internal predecessors, (141), 12 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 11 states have call predecessors, (24), 11 states have call successors, (24) [2022-07-21 09:47:01,871 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 316 transitions. [2022-07-21 09:47:01,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-21 09:47:01,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:01,873 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:01,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:02,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:02,087 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:02,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:02,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1912565116, now seen corresponding path program 1 times [2022-07-21 09:47:02,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:02,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390386060] [2022-07-21 09:47:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:02,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:02,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:47:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:02,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:47:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:02,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:47:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:02,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:47:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:02,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:47:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:02,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:47:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:02,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:47:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:02,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:47:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:02,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:47:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 10 proven. 34 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 09:47:02,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:02,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390386060] [2022-07-21 09:47:02,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390386060] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:47:02,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988104445] [2022-07-21 09:47:02,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:02,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:02,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:02,361 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:02,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 09:47:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:02,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-21 09:47:02,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:02,610 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:47:02,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 09:47:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 21 proven. 41 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 09:47:03,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:47:03,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 113 [2022-07-21 09:47:03,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 105 [2022-07-21 09:47:03,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 101 [2022-07-21 09:47:03,691 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 10 proven. 35 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 09:47:03,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988104445] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:47:03,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:47:03,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 15] total 34 [2022-07-21 09:47:03,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871080400] [2022-07-21 09:47:03,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:47:03,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-21 09:47:03,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:03,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-21 09:47:03,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1004, Unknown=0, NotChecked=0, Total=1122 [2022-07-21 09:47:03,694 INFO L87 Difference]: Start difference. First operand 254 states and 316 transitions. Second operand has 34 states, 34 states have (on average 4.264705882352941) internal successors, (145), 32 states have internal predecessors, (145), 14 states have call successors, (22), 3 states have call predecessors, (22), 7 states have return successors, (22), 13 states have call predecessors, (22), 13 states have call successors, (22) [2022-07-21 09:47:04,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:04,597 INFO L93 Difference]: Finished difference Result 537 states and 688 transitions. [2022-07-21 09:47:04,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 09:47:04,597 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.264705882352941) internal successors, (145), 32 states have internal predecessors, (145), 14 states have call successors, (22), 3 states have call predecessors, (22), 7 states have return successors, (22), 13 states have call predecessors, (22), 13 states have call successors, (22) Word has length 100 [2022-07-21 09:47:04,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:04,600 INFO L225 Difference]: With dead ends: 537 [2022-07-21 09:47:04,600 INFO L226 Difference]: Without dead ends: 447 [2022-07-21 09:47:04,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 213 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=319, Invalid=2333, Unknown=0, NotChecked=0, Total=2652 [2022-07-21 09:47:04,602 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 221 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 365 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:04,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1972 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 804 Invalid, 0 Unknown, 365 Unchecked, 0.5s Time] [2022-07-21 09:47:04,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-07-21 09:47:04,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 321. [2022-07-21 09:47:04,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 250 states have (on average 1.2) internal successors, (300), 257 states have internal predecessors, (300), 38 states have call successors, (38), 27 states have call predecessors, (38), 32 states have return successors, (55), 36 states have call predecessors, (55), 36 states have call successors, (55) [2022-07-21 09:47:04,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 393 transitions. [2022-07-21 09:47:04,632 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 393 transitions. Word has length 100 [2022-07-21 09:47:04,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:04,633 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 393 transitions. [2022-07-21 09:47:04,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.264705882352941) internal successors, (145), 32 states have internal predecessors, (145), 14 states have call successors, (22), 3 states have call predecessors, (22), 7 states have return successors, (22), 13 states have call predecessors, (22), 13 states have call successors, (22) [2022-07-21 09:47:04,633 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 393 transitions. [2022-07-21 09:47:04,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-21 09:47:04,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:04,635 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:04,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:04,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-21 09:47:04,851 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:04,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:04,852 INFO L85 PathProgramCache]: Analyzing trace with hash 901447866, now seen corresponding path program 1 times [2022-07-21 09:47:04,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:04,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263915354] [2022-07-21 09:47:04,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:04,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:04,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:47:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:04,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:47:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:04,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:47:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:04,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:47:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:05,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:47:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:05,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:47:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:05,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:47:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:05,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:47:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:05,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:47:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-21 09:47:05,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:05,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263915354] [2022-07-21 09:47:05,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263915354] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:47:05,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237639802] [2022-07-21 09:47:05,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:05,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:05,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:05,060 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:05,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 09:47:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:05,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:47:05,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:05,360 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-21 09:47:05,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:47:05,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237639802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:47:05,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:47:05,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-07-21 09:47:05,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404990853] [2022-07-21 09:47:05,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:47:05,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:47:05,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:47:05,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:47:05,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:47:05,363 INFO L87 Difference]: Start difference. First operand 321 states and 393 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 09:47:05,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:47:05,499 INFO L93 Difference]: Finished difference Result 733 states and 917 transitions. [2022-07-21 09:47:05,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:47:05,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 100 [2022-07-21 09:47:05,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:47:05,503 INFO L225 Difference]: With dead ends: 733 [2022-07-21 09:47:05,503 INFO L226 Difference]: Without dead ends: 314 [2022-07-21 09:47:05,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-07-21 09:47:05,505 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 100 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:47:05,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 347 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:47:05,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-07-21 09:47:05,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2022-07-21 09:47:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 241 states have (on average 1.1742738589211619) internal successors, (283), 249 states have internal predecessors, (283), 38 states have call successors, (38), 26 states have call predecessors, (38), 32 states have return successors, (55), 36 states have call predecessors, (55), 36 states have call successors, (55) [2022-07-21 09:47:05,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 376 transitions. [2022-07-21 09:47:05,530 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 376 transitions. Word has length 100 [2022-07-21 09:47:05,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:47:05,531 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 376 transitions. [2022-07-21 09:47:05,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 09:47:05,531 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 376 transitions. [2022-07-21 09:47:05,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-21 09:47:05,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:47:05,533 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:47:05,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:05,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-21 09:47:05,755 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:47:05,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:47:05,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2065682137, now seen corresponding path program 1 times [2022-07-21 09:47:05,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:47:05,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130229491] [2022-07-21 09:47:05,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:05,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:47:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:05,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:47:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:05,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:47:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:05,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:47:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:06,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:47:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:06,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:47:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:06,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:47:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:06,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:47:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:06,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:47:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:47:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:06,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:47:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-21 09:47:06,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:47:06,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130229491] [2022-07-21 09:47:06,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130229491] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:47:06,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477728754] [2022-07-21 09:47:06,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:47:06,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:47:06,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:47:06,524 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:47:06,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-21 09:47:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:47:06,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 131 conjunts are in the unsatisfiable core [2022-07-21 09:47:06,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:47:06,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2022-07-21 09:47:06,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:47:06,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2022-07-21 09:47:06,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:47:09,219 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 54 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 09:47:09,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:47:20,352 WARN L233 SmtUtils]: Spent 10.17s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-21 09:47:33,116 WARN L233 SmtUtils]: Spent 10.15s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-21 09:47:34,175 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:47:34,177 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 4698 treesize of output 4266 [2022-07-21 09:47:34,419 INFO L356 Elim1Store]: treesize reduction 23, result has 86.1 percent of original size [2022-07-21 09:47:34,421 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 45459 treesize of output 42138 [2022-07-21 09:47:34,881 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:47:34,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 45690 treesize of output 45284 [2022-07-21 09:47:35,482 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:47:35,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 45117 treesize of output 43374 [2022-07-21 09:47:35,933 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:47:35,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 53033 treesize of output 50936 [2022-07-21 09:47:38,360 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:47:38,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 47792 treesize of output 47635 [2022-07-21 09:47:39,217 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-21 09:47:39,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-21 09:47:39,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-21 09:47:39,442 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger out of long range at java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.computeDerApplicabilityScore(QuantifierPusher.java:545) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.selectBestEliminatee(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:348) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:176) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:251) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-21 09:47:39,445 INFO L158 Benchmark]: Toolchain (without parser) took 66916.84ms. Allocated memory was 56.6MB in the beginning and 461.4MB in the end (delta: 404.8MB). Free memory was 29.2MB in the beginning and 245.2MB in the end (delta: -216.0MB). Peak memory consumption was 294.5MB. Max. memory is 16.1GB. [2022-07-21 09:47:39,445 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 39.3MB in the beginning and 39.3MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 09:47:39,446 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1676.61ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 29.0MB in the beginning and 46.2MB in the end (delta: -17.2MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2022-07-21 09:47:39,446 INFO L158 Benchmark]: Boogie Procedure Inliner took 133.80ms. Allocated memory is still 83.9MB. Free memory was 46.2MB in the beginning and 40.7MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-21 09:47:39,446 INFO L158 Benchmark]: Boogie Preprocessor took 67.79ms. Allocated memory is still 83.9MB. Free memory was 40.7MB in the beginning and 38.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 09:47:39,446 INFO L158 Benchmark]: RCFGBuilder took 561.26ms. Allocated memory is still 83.9MB. Free memory was 38.2MB in the beginning and 36.7MB in the end (delta: 1.5MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2022-07-21 09:47:39,446 INFO L158 Benchmark]: TraceAbstraction took 64470.84ms. Allocated memory was 83.9MB in the beginning and 461.4MB in the end (delta: 377.5MB). Free memory was 36.2MB in the beginning and 245.2MB in the end (delta: -209.0MB). Peak memory consumption was 271.7MB. Max. memory is 16.1GB. [2022-07-21 09:47:39,448 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 39.3MB in the beginning and 39.3MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1676.61ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 29.0MB in the beginning and 46.2MB in the end (delta: -17.2MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 133.80ms. Allocated memory is still 83.9MB. Free memory was 46.2MB in the beginning and 40.7MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.79ms. Allocated memory is still 83.9MB. Free memory was 40.7MB in the beginning and 38.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 561.26ms. Allocated memory is still 83.9MB. Free memory was 38.2MB in the beginning and 36.7MB in the end (delta: 1.5MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * TraceAbstraction took 64470.84ms. Allocated memory was 83.9MB in the beginning and 461.4MB in the end (delta: 377.5MB). Free memory was 36.2MB in the beginning and 245.2MB in the end (delta: -209.0MB). Peak memory consumption was 271.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of long range de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger out of long range: java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-21 09:47:39,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 ce5362e495562dfaea277a751eacbf753e9d90aa85c88e38ea1b10dbc078ec49 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:47:41,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:47:41,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:47:41,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:47:41,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:47:41,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:47:41,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:47:41,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:47:41,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:47:41,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:47:41,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:47:41,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:47:41,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:47:41,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:47:41,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:47:41,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:47:41,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:47:41,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:47:41,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:47:41,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:47:41,374 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:47:41,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:47:41,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:47:41,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:47:41,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:47:41,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:47:41,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:47:41,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:47:41,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:47:41,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:47:41,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:47:41,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:47:41,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:47:41,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:47:41,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:47:41,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:47:41,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:47:41,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:47:41,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:47:41,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:47:41,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:47:41,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:47:41,394 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 09:47:41,429 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:47:41,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:47:41,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:47:41,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:47:41,430 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:47:41,431 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:47:41,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:47:41,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:47:41,432 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:47:41,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:47:41,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:47:41,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:47:41,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:47:41,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:47:41,438 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 09:47:41,439 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 09:47:41,439 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 09:47:41,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:47:41,439 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:47:41,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:47:41,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:47:41,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:47:41,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:47:41,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:47:41,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:47:41,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:47:41,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:47:41,441 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 09:47:41,441 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 09:47:41,441 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:47:41,441 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:47:41,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:47:41,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 09:47:41,442 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce5362e495562dfaea277a751eacbf753e9d90aa85c88e38ea1b10dbc078ec49 [2022-07-21 09:47:41,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:47:41,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:47:41,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:47:41,748 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:47:41,749 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:47:41,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i [2022-07-21 09:47:41,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8afca0f4d/ed3b49e678bb41a4b2bca83d1d48850f/FLAG799296e14 [2022-07-21 09:47:42,490 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:47:42,491 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i [2022-07-21 09:47:42,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8afca0f4d/ed3b49e678bb41a4b2bca83d1d48850f/FLAG799296e14 [2022-07-21 09:47:42,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8afca0f4d/ed3b49e678bb41a4b2bca83d1d48850f [2022-07-21 09:47:42,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:47:42,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:47:42,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:47:42,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:47:42,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:47:42,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:47:42" (1/1) ... [2022-07-21 09:47:42,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7995eba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:47:42, skipping insertion in model container [2022-07-21 09:47:42,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:47:42" (1/1) ... [2022-07-21 09:47:42,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:47:42,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:47:43,165 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_linked_list_rend_harness.i[4494,4507] [2022-07-21 09:47:43,170 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_linked_list_rend_harness.i[4554,4567] [2022-07-21 09:47:43,810 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:43,813 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:43,814 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:43,814 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:43,817 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:43,838 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:43,839 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:43,843 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:43,845 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:43,847 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:43,849 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:43,849 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:43,850 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:47:44,111 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:47:44,112 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:47:44,113 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:47:44,114 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:47:44,115 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:47:44,115 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:47:44,116 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:47:44,116 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:47:44,117 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:47:44,123 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:47:44,217 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:47:44,227 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.ArithmeticException: BigInteger out of int range at java.base/java.math.BigInteger.intValueExact(BigInteger.java:4784) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1009) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:968) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:249) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:2978) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2836) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2138) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:143) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1135) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:211) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-21 09:47:44,232 INFO L158 Benchmark]: Toolchain (without parser) took 1403.14ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 27.9MB in the beginning and 30.0MB in the end (delta: -2.1MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2022-07-21 09:47:44,233 INFO L158 Benchmark]: CDTParser took 0.82ms. Allocated memory is still 44.0MB. Free memory was 25.8MB in the beginning and 25.8MB in the end (delta: 50.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 09:47:44,234 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1399.74ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 27.8MB in the beginning and 30.0MB in the end (delta: -2.2MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2022-07-21 09:47:44,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82ms. Allocated memory is still 44.0MB. Free memory was 25.8MB in the beginning and 25.8MB in the end (delta: 50.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1399.74ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 27.8MB in the beginning and 30.0MB in the end (delta: -2.2MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of int range de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: ArithmeticException: BigInteger out of int range: java.base/java.math.BigInteger.intValueExact(BigInteger.java:4784) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ArithmeticException: BigInteger out of int range