./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_rbegin_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 3bef4637cc296c755ba815d09f028f51f0bde7e0d2e6155f2b5c648b5201a193 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:27:36,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:27:36,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:27:36,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:27:36,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:27:36,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:27:36,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:27:36,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:27:36,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:27:36,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:27:36,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:27:36,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:27:36,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:27:36,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:27:36,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:27:36,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:27:36,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:27:36,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:27:36,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:27:36,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:27:36,566 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:27:36,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:27:36,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:27:36,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:27:36,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:27:36,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:27:36,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:27:36,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:27:36,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:27:36,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:27:36,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:27:36,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:27:36,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:27:36,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:27:36,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:27:36,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:27:36,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:27:36,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:27:36,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:27:36,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:27:36,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:27:36,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:27:36,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:27:36,610 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:27:36,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:27:36,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:27:36,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:27:36,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:27:36,614 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:27:36,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:27:36,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:27:36,614 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:27:36,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:27:36,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:27:36,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:27:36,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:27:36,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:27:36,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:27:36,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:27:36,617 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:27:36,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:27:36,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:27:36,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:27:36,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:27:36,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:27:36,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:27:36,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:27:36,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:27:36,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:27:36,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:27:36,619 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:27:36,619 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:27:36,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:27:36,620 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bef4637cc296c755ba815d09f028f51f0bde7e0d2e6155f2b5c648b5201a193 [2022-07-22 22:27:36,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:27:36,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:27:36,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:27:36,829 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:27:36,829 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:27:36,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2022-07-22 22:27:36,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d98b00a32/8b13d3c4418d4ad6b6a09c638ba5760b/FLAG89c5be62c [2022-07-22 22:27:37,488 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:27:37,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2022-07-22 22:27:37,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d98b00a32/8b13d3c4418d4ad6b6a09c638ba5760b/FLAG89c5be62c [2022-07-22 22:27:37,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d98b00a32/8b13d3c4418d4ad6b6a09c638ba5760b [2022-07-22 22:27:37,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:27:37,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:27:37,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:27:37,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:27:37,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:27:37,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:27:37" (1/1) ... [2022-07-22 22:27:37,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e473dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:37, skipping insertion in model container [2022-07-22 22:27:37,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:27:37" (1/1) ... [2022-07-22 22:27:37,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:27:37,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:27:38,203 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_rbegin_harness.i[4496,4509] [2022-07-22 22:27:38,207 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_rbegin_harness.i[4556,4569] [2022-07-22 22:27:38,745 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:38,748 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:38,748 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:38,749 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:38,750 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:38,758 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:38,759 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:38,764 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:38,768 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:38,770 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:38,771 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:38,772 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:38,772 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:39,014 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:27:39,015 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:27:39,016 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:27:39,016 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:27:39,017 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:27:39,018 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:27:39,018 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:27:39,019 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:27:39,019 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:27:39,020 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:27:39,098 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:27:39,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:27:39,130 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:27:39,140 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_rbegin_harness.i[4496,4509] [2022-07-22 22:27:39,141 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_rbegin_harness.i[4556,4569] [2022-07-22 22:27:39,189 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:39,198 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:39,199 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:39,199 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:39,212 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:39,218 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:39,218 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:39,219 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:39,219 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:39,220 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:39,220 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:39,220 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:39,221 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:39,260 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:27:39,261 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:27:39,261 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:27:39,262 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:27:39,263 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:27:39,263 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:27:39,263 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:27:39,264 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:27:39,264 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:27:39,265 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:27:39,281 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:27:39,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:27:39,480 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:27:39,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:39 WrapperNode [2022-07-22 22:27:39,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:27:39,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:27:39,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:27:39,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:27:39,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:39" (1/1) ... [2022-07-22 22:27:39,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:39" (1/1) ... [2022-07-22 22:27:39,613 INFO L137 Inliner]: procedures = 679, calls = 1041, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 142 [2022-07-22 22:27:39,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:27:39,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:27:39,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:27:39,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:27:39,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:39" (1/1) ... [2022-07-22 22:27:39,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:39" (1/1) ... [2022-07-22 22:27:39,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:39" (1/1) ... [2022-07-22 22:27:39,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:39" (1/1) ... [2022-07-22 22:27:39,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:39" (1/1) ... [2022-07-22 22:27:39,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:39" (1/1) ... [2022-07-22 22:27:39,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:39" (1/1) ... [2022-07-22 22:27:39,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:27:39,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:27:39,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:27:39,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:27:39,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:39" (1/1) ... [2022-07-22 22:27:39,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:27:39,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:39,700 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) [2022-07-22 22:27:39,724 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 [2022-07-22 22:27:39,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:27:39,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:27:39,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:27:39,742 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-07-22 22:27:39,742 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-07-22 22:27:39,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:27:39,743 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-07-22 22:27:39,743 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-07-22 22:27:39,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:27:39,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:27:39,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:27:39,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:27:39,745 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:27:39,745 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:27:39,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:27:39,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:27:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:27:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-22 22:27:39,746 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-22 22:27:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:27:39,961 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:27:39,962 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:27:40,160 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:27:40,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:27:40,166 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 22:27:40,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:27:40 BoogieIcfgContainer [2022-07-22 22:27:40,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:27:40,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:27:40,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:27:40,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:27:40,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:27:37" (1/3) ... [2022-07-22 22:27:40,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425b2776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:27:40, skipping insertion in model container [2022-07-22 22:27:40,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:39" (2/3) ... [2022-07-22 22:27:40,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425b2776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:27:40, skipping insertion in model container [2022-07-22 22:27:40,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:27:40" (3/3) ... [2022-07-22 22:27:40,176 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_rbegin_harness.i [2022-07-22 22:27:40,200 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:27:40,200 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:27:40,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:27:40,275 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@7c043ceb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7516451a [2022-07-22 22:27:40,277 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:27:40,281 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 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) [2022-07-22 22:27:40,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 22:27:40,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:40,291 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] [2022-07-22 22:27:40,291 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:40,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:40,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1062572114, now seen corresponding path program 1 times [2022-07-22 22:27:40,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:40,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071152964] [2022-07-22 22:27:40,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:40,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:40,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:40,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:40,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:27:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:40,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 22:27:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:40,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 22:27:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:40,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 22:27:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:40,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 22:27:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-22 22:27:40,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:40,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071152964] [2022-07-22 22:27:40,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071152964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:27:40,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:27:40,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 22:27:40,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691367231] [2022-07-22 22:27:40,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:27:40,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 22:27:40,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:27:40,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 22:27:40,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 22:27:40,845 INFO L87 Difference]: Start difference. First operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 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) [2022-07-22 22:27:40,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:27:40,872 INFO L93 Difference]: Finished difference Result 130 states and 186 transitions. [2022-07-22 22:27:40,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 22:27:40,874 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 [2022-07-22 22:27:40,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:27:40,886 INFO L225 Difference]: With dead ends: 130 [2022-07-22 22:27:40,886 INFO L226 Difference]: Without dead ends: 64 [2022-07-22 22:27:40,890 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 [2022-07-22 22:27:40,897 INFO L413 NwaCegarLoop]: 88 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, 88 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 [2022-07-22 22:27:40,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:27:40,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-22 22:27:40,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-07-22 22:27:40,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 45 states have (on average 1.288888888888889) internal successors, (58), 46 states have internal predecessors, (58), 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) [2022-07-22 22:27:40,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2022-07-22 22:27:40,948 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 68 [2022-07-22 22:27:40,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:27:40,949 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2022-07-22 22:27:40,949 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) [2022-07-22 22:27:40,950 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2022-07-22 22:27:40,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 22:27:40,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:40,953 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] [2022-07-22 22:27:40,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 22:27:40,954 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:40,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:40,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1946087212, now seen corresponding path program 1 times [2022-07-22 22:27:40,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:40,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623686866] [2022-07-22 22:27:40,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:40,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:41,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:41,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:41,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:27:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:41,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 22:27:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:41,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 22:27:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:41,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 22:27:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:41,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 22:27:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:41,299 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 22:27:41,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:41,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623686866] [2022-07-22 22:27:41,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623686866] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:27:41,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405439111] [2022-07-22 22:27:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:41,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:41,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:41,304 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) [2022-07-22 22:27:41,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:27:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:41,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-22 22:27:41,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:27:41,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:27:41,625 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 [2022-07-22 22:27:41,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:27:41,641 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 [2022-07-22 22:27:41,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:27:41,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:27:41,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:27:41,722 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 [2022-07-22 22:27:41,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:27:41,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:27:41,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:27:41,734 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 [2022-07-22 22:27:42,245 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 22:27:42,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:27:42,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405439111] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:27:42,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:27:42,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2022-07-22 22:27:42,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408041470] [2022-07-22 22:27:42,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:27:42,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:27:42,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:27:42,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:27:42,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:27:42,249 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 22:27:42,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:27:42,315 INFO L93 Difference]: Finished difference Result 136 states and 180 transitions. [2022-07-22 22:27:42,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:27:42,316 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 68 [2022-07-22 22:27:42,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:27:42,319 INFO L225 Difference]: With dead ends: 136 [2022-07-22 22:27:42,319 INFO L226 Difference]: Without dead ends: 89 [2022-07-22 22:27:42,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:27:42,320 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 17 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:27:42,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 397 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 67 Unchecked, 0.0s Time] [2022-07-22 22:27:42,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-07-22 22:27:42,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-07-22 22:27:42,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 64 states have (on average 1.3125) internal successors, (84), 67 states have internal predecessors, (84), 16 states have call successors, (16), 7 states have call predecessors, (16), 8 states have return successors, (18), 14 states have call predecessors, (18), 15 states have call successors, (18) [2022-07-22 22:27:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2022-07-22 22:27:42,333 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 68 [2022-07-22 22:27:42,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:27:42,333 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2022-07-22 22:27:42,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 22:27:42,334 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2022-07-22 22:27:42,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 22:27:42,335 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:42,336 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] [2022-07-22 22:27:42,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 22:27:42,552 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 [2022-07-22 22:27:42,553 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:42,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:42,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2008126826, now seen corresponding path program 1 times [2022-07-22 22:27:42,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:42,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970016041] [2022-07-22 22:27:42,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:42,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:42,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:42,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:42,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:27:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:42,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 22:27:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:42,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 22:27:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:42,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 22:27:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:42,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 22:27:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 22:27:42,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:42,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970016041] [2022-07-22 22:27:42,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970016041] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:27:42,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485420789] [2022-07-22 22:27:42,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:42,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:42,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:42,800 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) [2022-07-22 22:27:42,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:27:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:42,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 53 conjunts are in the unsatisfiable core [2022-07-22 22:27:42,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:27:43,050 INFO L356 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2022-07-22 22:27:43,051 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 [2022-07-22 22:27:43,067 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:27:43,067 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 [2022-07-22 22:27:43,079 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 [2022-07-22 22:27:43,094 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 [2022-07-22 22:27:43,162 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 40 treesize of output 13 [2022-07-22 22:27:43,167 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 7 treesize of output 3 [2022-07-22 22:27:43,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:27:43,423 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 22:27:43,423 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 38 treesize of output 22 [2022-07-22 22:27:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:27:43,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:27:44,272 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:27:44,272 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 118 treesize of output 120 [2022-07-22 22:27:44,278 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 144 treesize of output 136 [2022-07-22 22:27:44,283 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 67 treesize of output 63 [2022-07-22 22:27:44,291 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 138 treesize of output 126 [2022-07-22 22:27:44,299 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 126 treesize of output 118 [2022-07-22 22:27:44,307 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 118 treesize of output 102 [2022-07-22 22:27:44,369 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 7 treesize of output 3 [2022-07-22 22:27:44,374 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 79 treesize of output 71 [2022-07-22 22:27:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 22:27:44,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485420789] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:27:44,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:27:44,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 17, 15] total 33 [2022-07-22 22:27:44,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589425113] [2022-07-22 22:27:44,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:27:44,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-22 22:27:44,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:27:44,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-22 22:27:44,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=949, Unknown=0, NotChecked=0, Total=1056 [2022-07-22 22:27:44,459 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand has 33 states, 30 states have (on average 3.3666666666666667) internal successors, (101), 29 states have internal predecessors, (101), 10 states have call successors, (18), 4 states have call predecessors, (18), 9 states have return successors, (17), 6 states have call predecessors, (17), 10 states have call successors, (17) [2022-07-22 22:27:45,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:27:45,787 INFO L93 Difference]: Finished difference Result 298 states and 449 transitions. [2022-07-22 22:27:45,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-22 22:27:45,787 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 3.3666666666666667) internal successors, (101), 29 states have internal predecessors, (101), 10 states have call successors, (18), 4 states have call predecessors, (18), 9 states have return successors, (17), 6 states have call predecessors, (17), 10 states have call successors, (17) Word has length 68 [2022-07-22 22:27:45,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:27:45,791 INFO L225 Difference]: With dead ends: 298 [2022-07-22 22:27:45,791 INFO L226 Difference]: Without dead ends: 201 [2022-07-22 22:27:45,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=289, Invalid=2903, Unknown=0, NotChecked=0, Total=3192 [2022-07-22 22:27:45,793 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 259 mSDsluCounter, 2093 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 2239 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 426 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:27:45,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 2239 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 934 Invalid, 0 Unknown, 426 Unchecked, 0.7s Time] [2022-07-22 22:27:45,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-22 22:27:45,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 177. [2022-07-22 22:27:45,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 137 states have (on average 1.3795620437956204) internal successors, (189), 144 states have internal predecessors, (189), 25 states have call successors, (25), 9 states have call predecessors, (25), 14 states have return successors, (49), 23 states have call predecessors, (49), 24 states have call successors, (49) [2022-07-22 22:27:45,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 263 transitions. [2022-07-22 22:27:45,824 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 263 transitions. Word has length 68 [2022-07-22 22:27:45,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:27:45,825 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 263 transitions. [2022-07-22 22:27:45,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 3.3666666666666667) internal successors, (101), 29 states have internal predecessors, (101), 10 states have call successors, (18), 4 states have call predecessors, (18), 9 states have return successors, (17), 6 states have call predecessors, (17), 10 states have call successors, (17) [2022-07-22 22:27:45,825 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 263 transitions. [2022-07-22 22:27:45,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 22:27:45,828 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:45,828 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] [2022-07-22 22:27:45,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:27:46,043 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 [2022-07-22 22:27:46,043 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:46,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:46,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1195332088, now seen corresponding path program 1 times [2022-07-22 22:27:46,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:46,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574142680] [2022-07-22 22:27:46,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:46,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:46,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:46,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:46,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:27:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:46,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 22:27:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:46,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:27:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:46,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 22:27:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:46,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:27:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:46,178 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 22:27:46,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:46,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574142680] [2022-07-22 22:27:46,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574142680] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:27:46,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266792949] [2022-07-22 22:27:46,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:46,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:46,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:46,181 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) [2022-07-22 22:27:46,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:27:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:46,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 22:27:46,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:27:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 22:27:46,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:27:46,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266792949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:27:46,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:27:46,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-07-22 22:27:46,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395742557] [2022-07-22 22:27:46,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:27:46,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:27:46,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:27:46,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:27:46,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:27:46,390 INFO L87 Difference]: Start difference. First operand 177 states and 263 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) [2022-07-22 22:27:46,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:27:46,540 INFO L93 Difference]: Finished difference Result 318 states and 481 transitions. [2022-07-22 22:27:46,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:27:46,541 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 [2022-07-22 22:27:46,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:27:46,543 INFO L225 Difference]: With dead ends: 318 [2022-07-22 22:27:46,543 INFO L226 Difference]: Without dead ends: 193 [2022-07-22 22:27:46,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:27:46,545 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 107 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 243 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 [2022-07-22 22:27:46,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 243 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:27:46,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-07-22 22:27:46,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 184. [2022-07-22 22:27:46,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 142 states have (on average 1.352112676056338) internal successors, (192), 151 states have internal predecessors, (192), 25 states have call successors, (25), 9 states have call predecessors, (25), 16 states have return successors, (55), 23 states have call predecessors, (55), 24 states have call successors, (55) [2022-07-22 22:27:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 272 transitions. [2022-07-22 22:27:46,574 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 272 transitions. Word has length 70 [2022-07-22 22:27:46,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:27:46,574 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 272 transitions. [2022-07-22 22:27:46,574 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) [2022-07-22 22:27:46,575 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 272 transitions. [2022-07-22 22:27:46,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 22:27:46,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:46,577 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] [2022-07-22 22:27:46,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:27:46,802 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 [2022-07-22 22:27:46,802 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:46,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:46,803 INFO L85 PathProgramCache]: Analyzing trace with hash -316025515, now seen corresponding path program 1 times [2022-07-22 22:27:46,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:46,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912911399] [2022-07-22 22:27:46,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:46,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:46,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:46,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:46,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:27:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:46,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 22:27:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:46,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:27:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:46,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 22:27:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:46,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 22:27:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:46,929 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 22:27:46,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:46,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912911399] [2022-07-22 22:27:46,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912911399] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:27:46,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310108629] [2022-07-22 22:27:46,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:46,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:46,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:46,931 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) [2022-07-22 22:27:46,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:27:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:47,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:27:47,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:27:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 22:27:47,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:27:47,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310108629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:27:47,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:27:47,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-07-22 22:27:47,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485271658] [2022-07-22 22:27:47,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:27:47,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:27:47,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:27:47,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:27:47,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:27:47,141 INFO L87 Difference]: Start difference. First operand 184 states and 272 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) [2022-07-22 22:27:47,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:27:47,349 INFO L93 Difference]: Finished difference Result 351 states and 531 transitions. [2022-07-22 22:27:47,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:27:47,349 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 [2022-07-22 22:27:47,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:27:47,351 INFO L225 Difference]: With dead ends: 351 [2022-07-22 22:27:47,351 INFO L226 Difference]: Without dead ends: 217 [2022-07-22 22:27:47,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:27:47,353 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 144 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 284 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 [2022-07-22 22:27:47,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 284 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:27:47,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-07-22 22:27:47,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 188. [2022-07-22 22:27:47,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 146 states have (on average 1.3356164383561644) internal successors, (195), 155 states have internal predecessors, (195), 25 states have call successors, (25), 9 states have call predecessors, (25), 16 states have return successors, (55), 23 states have call predecessors, (55), 24 states have call successors, (55) [2022-07-22 22:27:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 275 transitions. [2022-07-22 22:27:47,373 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 275 transitions. Word has length 72 [2022-07-22 22:27:47,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:27:47,373 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 275 transitions. [2022-07-22 22:27:47,373 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) [2022-07-22 22:27:47,373 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 275 transitions. [2022-07-22 22:27:47,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-22 22:27:47,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:47,375 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] [2022-07-22 22:27:47,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 22:27:47,599 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 [2022-07-22 22:27:47,599 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:47,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:47,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1928092350, now seen corresponding path program 1 times [2022-07-22 22:27:47,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:47,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72771793] [2022-07-22 22:27:47,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:47,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:47,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:47,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:47,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:27:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:47,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:27:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:47,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:27:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:47,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:27:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:47,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:27:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-22 22:27:47,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:47,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72771793] [2022-07-22 22:27:47,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72771793] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:27:47,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763281058] [2022-07-22 22:27:47,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:47,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:47,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:47,705 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) [2022-07-22 22:27:47,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:27:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:47,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 22:27:47,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:27:47,848 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 22:27:47,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:27:47,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763281058] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:27:47,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:27:47,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-22 22:27:47,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578430931] [2022-07-22 22:27:47,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:27:47,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 22:27:47,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:27:47,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 22:27:47,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:27:47,850 INFO L87 Difference]: Start difference. First operand 188 states and 275 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) [2022-07-22 22:27:47,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:27:47,868 INFO L93 Difference]: Finished difference Result 296 states and 441 transitions. [2022-07-22 22:27:47,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 22:27:47,869 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 [2022-07-22 22:27:47,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:27:47,870 INFO L225 Difference]: With dead ends: 296 [2022-07-22 22:27:47,870 INFO L226 Difference]: Without dead ends: 151 [2022-07-22 22:27:47,871 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 [2022-07-22 22:27:47,871 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 162 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 [2022-07-22 22:27:47,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 162 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:27:47,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-22 22:27:47,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 113. [2022-07-22 22:27:47,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 88 states have (on average 1.3409090909090908) internal successors, (118), 91 states have internal predecessors, (118), 16 states have call successors, (16), 7 states have call predecessors, (16), 8 states have return successors, (22), 14 states have call predecessors, (22), 15 states have call successors, (22) [2022-07-22 22:27:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 156 transitions. [2022-07-22 22:27:47,891 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 156 transitions. Word has length 73 [2022-07-22 22:27:47,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:27:47,892 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 156 transitions. [2022-07-22 22:27:47,892 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) [2022-07-22 22:27:47,892 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 156 transitions. [2022-07-22 22:27:47,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-22 22:27:47,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:47,893 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] [2022-07-22 22:27:47,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 22:27:48,111 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 [2022-07-22 22:27:48,111 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:48,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:48,112 INFO L85 PathProgramCache]: Analyzing trace with hash 137287748, now seen corresponding path program 1 times [2022-07-22 22:27:48,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:48,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14673683] [2022-07-22 22:27:48,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:48,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:48,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:48,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:48,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:27:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:48,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:27:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:48,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 22:27:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:48,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 22:27:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:48,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:27:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:48,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:27:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 22:27:48,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:48,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14673683] [2022-07-22 22:27:48,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14673683] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:27:48,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114060593] [2022-07-22 22:27:48,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:48,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:48,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:48,241 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) [2022-07-22 22:27:48,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:27:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:48,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 51 conjunts are in the unsatisfiable core [2022-07-22 22:27:48,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:27:48,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:27:48,444 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 [2022-07-22 22:27:48,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:27:48,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2022-07-22 22:27:48,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:27:48,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:27:48,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:27:48,503 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 [2022-07-22 22:27:48,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:27:48,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:27:48,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:27:48,509 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 [2022-07-22 22:27:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-22 22:27:49,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:27:49,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114060593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:27:49,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:27:49,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2022-07-22 22:27:49,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756204633] [2022-07-22 22:27:49,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:27:49,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:27:49,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:27:49,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:27:49,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:27:49,381 INFO L87 Difference]: Start difference. First operand 113 states and 156 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 22:27:49,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:27:49,468 INFO L93 Difference]: Finished difference Result 251 states and 354 transitions. [2022-07-22 22:27:49,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 22:27:49,468 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 81 [2022-07-22 22:27:49,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:27:49,470 INFO L225 Difference]: With dead ends: 251 [2022-07-22 22:27:49,470 INFO L226 Difference]: Without dead ends: 194 [2022-07-22 22:27:49,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 82 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:27:49,471 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 27 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:27:49,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 605 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 129 Unchecked, 0.0s Time] [2022-07-22 22:27:49,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-07-22 22:27:49,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 173. [2022-07-22 22:27:49,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 135 states have (on average 1.3555555555555556) internal successors, (183), 141 states have internal predecessors, (183), 23 states have call successors, (23), 10 states have call predecessors, (23), 14 states have return successors, (35), 21 states have call predecessors, (35), 22 states have call successors, (35) [2022-07-22 22:27:49,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 241 transitions. [2022-07-22 22:27:49,484 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 241 transitions. Word has length 81 [2022-07-22 22:27:49,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:27:49,484 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 241 transitions. [2022-07-22 22:27:49,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 22:27:49,485 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 241 transitions. [2022-07-22 22:27:49,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-22 22:27:49,486 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:49,486 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] [2022-07-22 22:27:49,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 22:27:49,699 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 [2022-07-22 22:27:49,699 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:49,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:49,700 INFO L85 PathProgramCache]: Analyzing trace with hash -672058878, now seen corresponding path program 1 times [2022-07-22 22:27:49,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:49,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668964539] [2022-07-22 22:27:49,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:49,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:49,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:49,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:49,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:27:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:49,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:27:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:49,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 22:27:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:49,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 22:27:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:49,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:27:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:49,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:27:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 22:27:49,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:49,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668964539] [2022-07-22 22:27:49,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668964539] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:27:49,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474650246] [2022-07-22 22:27:49,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:49,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:49,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:49,836 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) [2022-07-22 22:27:49,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 22:27:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:49,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 53 conjunts are in the unsatisfiable core [2022-07-22 22:27:49,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:27:50,073 INFO L356 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2022-07-22 22:27:50,074 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 [2022-07-22 22:27:50,085 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:27:50,085 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 [2022-07-22 22:27:50,101 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 [2022-07-22 22:27:50,107 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 [2022-07-22 22:27:50,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2022-07-22 22:27:50,137 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 7 treesize of output 3 [2022-07-22 22:27:50,498 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:27:50,504 INFO L356 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-07-22 22:27:50,504 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 25 [2022-07-22 22:27:50,757 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 22:27:50,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:27:51,220 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:27:51,221 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 118 treesize of output 120 [2022-07-22 22:27:51,225 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 144 treesize of output 136 [2022-07-22 22:27:51,232 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 67 treesize of output 63 [2022-07-22 22:27:51,238 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 58 [2022-07-22 22:27:51,244 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 58 treesize of output 54 [2022-07-22 22:27:51,249 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 54 treesize of output 46 [2022-07-22 22:27:51,295 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 79 treesize of output 71 [2022-07-22 22:27:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 22:27:51,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474650246] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:27:51,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:27:51,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 17, 15] total 34 [2022-07-22 22:27:51,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763506004] [2022-07-22 22:27:51,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:27:51,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-22 22:27:51,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:27:51,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-22 22:27:51,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1013, Unknown=0, NotChecked=0, Total=1122 [2022-07-22 22:27:51,386 INFO L87 Difference]: Start difference. First operand 173 states and 241 transitions. Second operand has 34 states, 31 states have (on average 4.096774193548387) internal successors, (127), 33 states have internal predecessors, (127), 11 states have call successors, (22), 4 states have call predecessors, (22), 9 states have return successors, (21), 9 states have call predecessors, (21), 11 states have call successors, (21) [2022-07-22 22:27:52,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:27:52,883 INFO L93 Difference]: Finished difference Result 514 states and 768 transitions. [2022-07-22 22:27:52,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-22 22:27:52,883 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 4.096774193548387) internal successors, (127), 33 states have internal predecessors, (127), 11 states have call successors, (22), 4 states have call predecessors, (22), 9 states have return successors, (21), 9 states have call predecessors, (21), 11 states have call successors, (21) Word has length 81 [2022-07-22 22:27:52,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:27:52,886 INFO L225 Difference]: With dead ends: 514 [2022-07-22 22:27:52,886 INFO L226 Difference]: Without dead ends: 352 [2022-07-22 22:27:52,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 150 SyntacticMatches, 7 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=363, Invalid=4059, Unknown=0, NotChecked=0, Total=4422 [2022-07-22 22:27:52,891 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 314 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2737 SdHoareTripleChecker+Invalid, 2194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 759 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:27:52,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 2737 Invalid, 2194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1344 Invalid, 0 Unknown, 759 Unchecked, 0.8s Time] [2022-07-22 22:27:52,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-07-22 22:27:52,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 228. [2022-07-22 22:27:52,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 184 states have (on average 1.3532608695652173) internal successors, (249), 193 states have internal predecessors, (249), 23 states have call successors, (23), 14 states have call predecessors, (23), 20 states have return successors, (46), 20 states have call predecessors, (46), 22 states have call successors, (46) [2022-07-22 22:27:52,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 318 transitions. [2022-07-22 22:27:52,915 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 318 transitions. Word has length 81 [2022-07-22 22:27:52,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:27:52,916 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 318 transitions. [2022-07-22 22:27:52,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 4.096774193548387) internal successors, (127), 33 states have internal predecessors, (127), 11 states have call successors, (22), 4 states have call predecessors, (22), 9 states have return successors, (21), 9 states have call predecessors, (21), 11 states have call successors, (21) [2022-07-22 22:27:52,916 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 318 transitions. [2022-07-22 22:27:52,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-22 22:27:52,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:52,917 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] [2022-07-22 22:27:52,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 22:27:53,131 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 [2022-07-22 22:27:53,132 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:53,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:53,132 INFO L85 PathProgramCache]: Analyzing trace with hash 431382673, now seen corresponding path program 1 times [2022-07-22 22:27:53,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:53,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950917040] [2022-07-22 22:27:53,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:53,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:53,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:53,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:53,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:27:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:53,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:27:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:53,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:27:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:53,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:27:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:53,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:27:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:53,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:27:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-22 22:27:53,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:53,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950917040] [2022-07-22 22:27:53,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950917040] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:27:53,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738813927] [2022-07-22 22:27:53,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:53,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:53,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:53,275 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) [2022-07-22 22:27:53,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 22:27:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:53,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-22 22:27:53,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:27:53,491 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:27:53,491 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 [2022-07-22 22:27:53,501 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:27:53,501 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 [2022-07-22 22:27:54,388 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 [2022-07-22 22:27:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 22:27:54,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:27:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-22 22:27:54,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738813927] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:27:54,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:27:54,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 8] total 18 [2022-07-22 22:27:54,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685077176] [2022-07-22 22:27:54,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:27:54,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 22:27:54,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:27:54,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 22:27:54,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=228, Unknown=1, NotChecked=30, Total=306 [2022-07-22 22:27:54,636 INFO L87 Difference]: Start difference. First operand 228 states and 318 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2022-07-22 22:27:55,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:27:55,165 INFO L93 Difference]: Finished difference Result 721 states and 1104 transitions. [2022-07-22 22:27:55,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 22:27:55,166 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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 83 [2022-07-22 22:27:55,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:27:55,169 INFO L225 Difference]: With dead ends: 721 [2022-07-22 22:27:55,170 INFO L226 Difference]: Without dead ends: 562 [2022-07-22 22:27:55,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=110, Invalid=445, Unknown=1, NotChecked=44, Total=600 [2022-07-22 22:27:55,173 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 215 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 182 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:27:55,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 589 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 466 Invalid, 0 Unknown, 182 Unchecked, 0.3s Time] [2022-07-22 22:27:55,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-07-22 22:27:55,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 328. [2022-07-22 22:27:55,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 273 states have (on average 1.358974358974359) internal successors, (371), 283 states have internal predecessors, (371), 30 states have call successors, (30), 18 states have call predecessors, (30), 24 states have return successors, (60), 26 states have call predecessors, (60), 29 states have call successors, (60) [2022-07-22 22:27:55,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 461 transitions. [2022-07-22 22:27:55,205 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 461 transitions. Word has length 83 [2022-07-22 22:27:55,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:27:55,206 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 461 transitions. [2022-07-22 22:27:55,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2022-07-22 22:27:55,206 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 461 transitions. [2022-07-22 22:27:55,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-22 22:27:55,208 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:55,209 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] [2022-07-22 22:27:55,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 22:27:55,433 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 [2022-07-22 22:27:55,433 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:55,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:55,434 INFO L85 PathProgramCache]: Analyzing trace with hash 13986067, now seen corresponding path program 1 times [2022-07-22 22:27:55,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:55,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691426356] [2022-07-22 22:27:55,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:55,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:55,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:55,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:55,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:27:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:55,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:27:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:55,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:27:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:55,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:27:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:55,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:27:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:55,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:27:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:55,565 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-22 22:27:55,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:55,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691426356] [2022-07-22 22:27:55,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691426356] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:27:55,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017651264] [2022-07-22 22:27:55,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:55,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:55,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:55,567 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) [2022-07-22 22:27:55,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 22:27:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:55,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:27:55,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:27:55,732 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 22:27:55,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:27:55,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017651264] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:27:55,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:27:55,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-07-22 22:27:55,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218100724] [2022-07-22 22:27:55,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:27:55,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:27:55,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:27:55,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:27:55,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:27:55,736 INFO L87 Difference]: Start difference. First operand 328 states and 461 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-07-22 22:27:55,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:27:55,767 INFO L93 Difference]: Finished difference Result 553 states and 799 transitions. [2022-07-22 22:27:55,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:27:55,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 [2022-07-22 22:27:55,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:27:55,769 INFO L225 Difference]: With dead ends: 553 [2022-07-22 22:27:55,769 INFO L226 Difference]: Without dead ends: 302 [2022-07-22 22:27:55,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:27:55,771 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 8 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 247 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 [2022-07-22 22:27:55,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 247 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:27:55,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-07-22 22:27:55,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 295. [2022-07-22 22:27:55,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 242 states have (on average 1.334710743801653) internal successors, (323), 252 states have internal predecessors, (323), 29 states have call successors, (29), 17 states have call predecessors, (29), 23 states have return successors, (58), 25 states have call predecessors, (58), 28 states have call successors, (58) [2022-07-22 22:27:55,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 410 transitions. [2022-07-22 22:27:55,792 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 410 transitions. Word has length 83 [2022-07-22 22:27:55,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:27:55,793 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 410 transitions. [2022-07-22 22:27:55,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-07-22 22:27:55,793 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 410 transitions. [2022-07-22 22:27:55,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-22 22:27:55,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:55,794 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] [2022-07-22 22:27:55,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 22:27:56,018 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 [2022-07-22 22:27:56,019 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:56,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:56,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1975560725, now seen corresponding path program 1 times [2022-07-22 22:27:56,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:56,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243220561] [2022-07-22 22:27:56,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:56,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:27:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:27:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:27:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:27:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:27:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:27:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 22:27:56,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:56,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243220561] [2022-07-22 22:27:56,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243220561] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:27:56,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345448910] [2022-07-22 22:27:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:56,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:56,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:56,221 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) [2022-07-22 22:27:56,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 22:27:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:27:56,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:27:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 22:27:56,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:27:56,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345448910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:27:56,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:27:56,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-22 22:27:56,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810315515] [2022-07-22 22:27:56,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:27:56,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:27:56,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:27:56,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:27:56,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:27:56,403 INFO L87 Difference]: Start difference. First operand 295 states and 410 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-07-22 22:27:56,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:27:56,427 INFO L93 Difference]: Finished difference Result 481 states and 679 transitions. [2022-07-22 22:27:56,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:27:56,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 [2022-07-22 22:27:56,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:27:56,429 INFO L225 Difference]: With dead ends: 481 [2022-07-22 22:27:56,429 INFO L226 Difference]: Without dead ends: 216 [2022-07-22 22:27:56,430 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 [2022-07-22 22:27:56,431 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 2 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:27:56,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 237 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:27:56,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-22 22:27:56,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 194. [2022-07-22 22:27:56,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 155 states have (on average 1.238709677419355) internal successors, (192), 161 states have internal predecessors, (192), 21 states have call successors, (21), 14 states have call predecessors, (21), 17 states have return successors, (31), 18 states have call predecessors, (31), 20 states have call successors, (31) [2022-07-22 22:27:56,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 244 transitions. [2022-07-22 22:27:56,444 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 244 transitions. Word has length 83 [2022-07-22 22:27:56,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:27:56,444 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 244 transitions. [2022-07-22 22:27:56,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-07-22 22:27:56,444 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 244 transitions. [2022-07-22 22:27:56,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-22 22:27:56,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:56,446 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-07-22 22:27:56,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 22:27:56,669 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 [2022-07-22 22:27:56,670 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:56,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:56,670 INFO L85 PathProgramCache]: Analyzing trace with hash -233275002, now seen corresponding path program 1 times [2022-07-22 22:27:56,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:56,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379960668] [2022-07-22 22:27:56,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:56,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:27:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:27:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:27:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 22:27:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 22:27:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 22:27:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-22 22:27:56,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:56,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379960668] [2022-07-22 22:27:56,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379960668] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:27:56,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341506333] [2022-07-22 22:27:56,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:56,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:56,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:56,807 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) [2022-07-22 22:27:56,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 22:27:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:56,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-22 22:27:56,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:27:57,021 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:27:57,021 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 [2022-07-22 22:27:57,035 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:27:57,035 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 [2022-07-22 22:27:57,805 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 22:27:57,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:27:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-22 22:27:58,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341506333] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:27:58,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:27:58,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 10] total 25 [2022-07-22 22:27:58,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039122937] [2022-07-22 22:27:58,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:27:58,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 22:27:58,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:27:58,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 22:27:58,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-07-22 22:27:58,192 INFO L87 Difference]: Start difference. First operand 194 states and 244 transitions. Second operand has 25 states, 24 states have (on average 5.041666666666667) internal successors, (121), 22 states have internal predecessors, (121), 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) [2022-07-22 22:27:58,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:27:58,751 INFO L93 Difference]: Finished difference Result 297 states and 373 transitions. [2022-07-22 22:27:58,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-22 22:27:58,752 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.041666666666667) internal successors, (121), 22 states have internal predecessors, (121), 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 84 [2022-07-22 22:27:58,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:27:58,753 INFO L225 Difference]: With dead ends: 297 [2022-07-22 22:27:58,753 INFO L226 Difference]: Without dead ends: 189 [2022-07-22 22:27:58,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 164 SyntacticMatches, 7 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=228, Invalid=1494, Unknown=0, NotChecked=0, Total=1722 [2022-07-22 22:27:58,754 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 110 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:27:58,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 736 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 358 Invalid, 0 Unknown, 56 Unchecked, 0.2s Time] [2022-07-22 22:27:58,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-07-22 22:27:58,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2022-07-22 22:27:58,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 148 states have (on average 1.2162162162162162) internal successors, (180), 153 states have internal predecessors, (180), 21 states have call successors, (21), 14 states have call predecessors, (21), 16 states have return successors, (28), 18 states have call predecessors, (28), 20 states have call successors, (28) [2022-07-22 22:27:58,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 229 transitions. [2022-07-22 22:27:58,766 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 229 transitions. Word has length 84 [2022-07-22 22:27:58,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:27:58,767 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 229 transitions. [2022-07-22 22:27:58,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.041666666666667) internal successors, (121), 22 states have internal predecessors, (121), 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) [2022-07-22 22:27:58,767 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 229 transitions. [2022-07-22 22:27:58,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-22 22:27:58,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:58,768 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] [2022-07-22 22:27:58,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 22:27:58,983 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 [2022-07-22 22:27:58,983 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:58,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:58,984 INFO L85 PathProgramCache]: Analyzing trace with hash -413998114, now seen corresponding path program 1 times [2022-07-22 22:27:58,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:58,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128232569] [2022-07-22 22:27:58,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:58,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:27:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:27:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:27:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 22:27:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 22:27:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 22:27:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,119 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-22 22:27:59,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:59,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128232569] [2022-07-22 22:27:59,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128232569] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:27:59,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908468964] [2022-07-22 22:27:59,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:59,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:59,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:59,122 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) [2022-07-22 22:27:59,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 22:27:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 22:27:59,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:27:59,369 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 22:27:59,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:27:59,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908468964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:27:59,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:27:59,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-07-22 22:27:59,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052396916] [2022-07-22 22:27:59,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:27:59,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:27:59,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:27:59,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:27:59,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:27:59,372 INFO L87 Difference]: Start difference. First operand 186 states and 229 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) [2022-07-22 22:27:59,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:27:59,519 INFO L93 Difference]: Finished difference Result 248 states and 306 transitions. [2022-07-22 22:27:59,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:27:59,520 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 [2022-07-22 22:27:59,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:27:59,521 INFO L225 Difference]: With dead ends: 248 [2022-07-22 22:27:59,521 INFO L226 Difference]: Without dead ends: 158 [2022-07-22 22:27:59,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:27:59,522 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 106 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:27:59,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 292 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:27:59,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-07-22 22:27:59,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2022-07-22 22:27:59,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 125 states have (on average 1.216) internal successors, (152), 127 states have internal predecessors, (152), 19 states have call successors, (19), 12 states have call predecessors, (19), 11 states have return successors, (20), 16 states have call predecessors, (20), 18 states have call successors, (20) [2022-07-22 22:27:59,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 191 transitions. [2022-07-22 22:27:59,532 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 191 transitions. Word has length 86 [2022-07-22 22:27:59,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:27:59,533 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 191 transitions. [2022-07-22 22:27:59,533 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) [2022-07-22 22:27:59,533 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 191 transitions. [2022-07-22 22:27:59,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-22 22:27:59,534 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:59,534 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 22:27:59,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 22:27:59,756 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 [2022-07-22 22:27:59,756 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:59,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:59,756 INFO L85 PathProgramCache]: Analyzing trace with hash -806881120, now seen corresponding path program 1 times [2022-07-22 22:27:59,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:59,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935870981] [2022-07-22 22:27:59,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:59,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:27:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:27:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:27:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 22:27:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:27:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 22:27:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:27:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:59,910 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-22 22:27:59,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:59,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935870981] [2022-07-22 22:27:59,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935870981] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:27:59,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153645119] [2022-07-22 22:27:59,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:59,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:59,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:59,916 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) [2022-07-22 22:27:59,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 22:28:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:28:00,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-22 22:28:00,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:28:00,206 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 22:28:00,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:28:00,364 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-22 22:28:00,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153645119] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:28:00,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:28:00,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 7] total 18 [2022-07-22 22:28:00,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757693498] [2022-07-22 22:28:00,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:28:00,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 22:28:00,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:28:00,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 22:28:00,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:28:00,366 INFO L87 Difference]: Start difference. First operand 156 states and 191 transitions. Second operand has 18 states, 15 states have (on average 4.8) internal successors, (72), 14 states have internal predecessors, (72), 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) [2022-07-22 22:28:00,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:28:00,519 INFO L93 Difference]: Finished difference Result 233 states and 291 transitions. [2022-07-22 22:28:00,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 22:28:00,520 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 4.8) internal successors, (72), 14 states have internal predecessors, (72), 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 [2022-07-22 22:28:00,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:28:00,521 INFO L225 Difference]: With dead ends: 233 [2022-07-22 22:28:00,521 INFO L226 Difference]: Without dead ends: 170 [2022-07-22 22:28:00,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:28:00,523 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 15 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:28:00,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 959 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:28:00,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-22 22:28:00,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 127. [2022-07-22 22:28:00,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 100 states have (on average 1.22) internal successors, (122), 101 states have internal predecessors, (122), 17 states have call successors, (17), 10 states have call predecessors, (17), 9 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17) [2022-07-22 22:28:00,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 156 transitions. [2022-07-22 22:28:00,535 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 156 transitions. Word has length 97 [2022-07-22 22:28:00,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:28:00,535 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 156 transitions. [2022-07-22 22:28:00,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 4.8) internal successors, (72), 14 states have internal predecessors, (72), 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) [2022-07-22 22:28:00,535 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 156 transitions. [2022-07-22 22:28:00,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 22:28:00,536 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:28:00,536 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 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] [2022-07-22 22:28:00,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 22:28:00,755 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 [2022-07-22 22:28:00,755 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:28:00,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:28:00,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1617876444, now seen corresponding path program 1 times [2022-07-22 22:28:00,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:28:00,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125384676] [2022-07-22 22:28:00,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:28:00,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:28:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:28:00,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:28:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:28:00,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:28:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:28:00,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:28:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:28:01,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:28:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:28:01,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 22:28:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:28:01,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 22:28:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:28:01,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:28:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:28:01,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 22:28:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:28:01,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 22:28:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:28:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 22:28:01,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:28:01,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125384676] [2022-07-22 22:28:01,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125384676] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:28:01,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195586220] [2022-07-22 22:28:01,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:28:01,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:28:01,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:28:01,043 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) [2022-07-22 22:28:01,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 22:28:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:28:01,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-22 22:28:01,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:28:01,309 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-22 22:28:01,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:28:01,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 22:28:01,366 INFO L356 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2022-07-22 22:28:01,367 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-22 22:28:01,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 22:28:01,579 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 [2022-07-22 22:28:01,580 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |v_#memory_$Pointer$.base_47| input size 44 context size 44 output size 44 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:611) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:529) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) 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:298) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:284) 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.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) 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) [2022-07-22 22:28:01,584 INFO L158 Benchmark]: Toolchain (without parser) took 23668.96ms. Allocated memory was 90.2MB in the beginning and 264.2MB in the end (delta: 174.1MB). Free memory was 52.7MB in the beginning and 186.8MB in the end (delta: -134.2MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. [2022-07-22 22:28:01,584 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 90.2MB. Free memory was 46.2MB in the beginning and 46.1MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 22:28:01,584 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1564.04ms. Allocated memory was 90.2MB in the beginning and 151.0MB in the end (delta: 60.8MB). Free memory was 52.5MB in the beginning and 98.2MB in the end (delta: -45.7MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. [2022-07-22 22:28:01,585 INFO L158 Benchmark]: Boogie Procedure Inliner took 133.43ms. Allocated memory is still 151.0MB. Free memory was 98.2MB in the beginning and 92.7MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-22 22:28:01,585 INFO L158 Benchmark]: Boogie Preprocessor took 33.94ms. Allocated memory is still 151.0MB. Free memory was 92.7MB in the beginning and 90.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 22:28:01,585 INFO L158 Benchmark]: RCFGBuilder took 518.25ms. Allocated memory is still 151.0MB. Free memory was 89.8MB in the beginning and 69.6MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-07-22 22:28:01,585 INFO L158 Benchmark]: TraceAbstraction took 21413.01ms. Allocated memory was 151.0MB in the beginning and 264.2MB in the end (delta: 113.2MB). Free memory was 68.8MB in the beginning and 186.8MB in the end (delta: -118.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 22:28:01,586 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 90.2MB. Free memory was 46.2MB in the beginning and 46.1MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1564.04ms. Allocated memory was 90.2MB in the beginning and 151.0MB in the end (delta: 60.8MB). Free memory was 52.5MB in the beginning and 98.2MB in the end (delta: -45.7MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 133.43ms. Allocated memory is still 151.0MB. Free memory was 98.2MB in the beginning and 92.7MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.94ms. Allocated memory is still 151.0MB. Free memory was 92.7MB in the beginning and 90.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 518.25ms. Allocated memory is still 151.0MB. Free memory was 89.8MB in the beginning and 69.6MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 21413.01ms. Allocated memory was 151.0MB in the beginning and 264.2MB in the end (delta: 113.2MB). Free memory was 68.8MB in the beginning and 186.8MB in the end (delta: -118.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_47| input size 44 context size 44 output size 44 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_47| input size 44 context size 44 output size 44: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-22 22:28:01,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_rbegin_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 3bef4637cc296c755ba815d09f028f51f0bde7e0d2e6155f2b5c648b5201a193 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:28:03,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:28:03,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:28:03,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:28:03,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:28:03,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:28:03,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:28:03,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:28:03,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:28:03,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:28:03,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:28:03,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:28:03,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:28:03,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:28:03,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:28:03,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:28:03,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:28:03,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:28:03,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:28:03,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:28:03,493 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:28:03,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:28:03,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:28:03,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:28:03,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:28:03,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:28:03,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:28:03,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:28:03,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:28:03,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:28:03,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:28:03,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:28:03,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:28:03,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:28:03,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:28:03,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:28:03,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:28:03,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:28:03,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:28:03,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:28:03,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:28:03,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:28:03,513 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-22 22:28:03,543 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:28:03,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:28:03,544 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:28:03,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:28:03,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:28:03,545 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:28:03,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:28:03,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:28:03,546 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:28:03,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:28:03,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:28:03,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:28:03,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:28:03,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:28:03,547 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 22:28:03,547 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 22:28:03,548 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 22:28:03,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:28:03,548 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:28:03,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:28:03,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:28:03,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:28:03,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:28:03,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:28:03,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:28:03,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:28:03,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:28:03,550 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 22:28:03,550 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 22:28:03,551 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:28:03,551 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:28:03,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:28:03,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 22:28:03,551 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bef4637cc296c755ba815d09f028f51f0bde7e0d2e6155f2b5c648b5201a193 [2022-07-22 22:28:03,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:28:03,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:28:03,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:28:03,878 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:28:03,879 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:28:03,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2022-07-22 22:28:03,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f5d9fcf3/5066fd5356354db59cf166c024fd4ff8/FLAG27ff190f3 [2022-07-22 22:28:04,559 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:28:04,560 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2022-07-22 22:28:04,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f5d9fcf3/5066fd5356354db59cf166c024fd4ff8/FLAG27ff190f3 [2022-07-22 22:28:04,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f5d9fcf3/5066fd5356354db59cf166c024fd4ff8 [2022-07-22 22:28:04,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:28:04,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:28:04,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:28:04,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:28:04,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:28:04,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:28:04" (1/1) ... [2022-07-22 22:28:04,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd6612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:28:04, skipping insertion in model container [2022-07-22 22:28:04,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:28:04" (1/1) ... [2022-07-22 22:28:04,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:28:04,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:28:05,093 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_rbegin_harness.i[4496,4509] [2022-07-22 22:28:05,098 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_rbegin_harness.i[4556,4569] [2022-07-22 22:28:05,593 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:28:05,594 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:28:05,596 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:28:05,596 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:28:05,597 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:28:05,609 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:28:05,611 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:28:05,613 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:28:05,614 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:28:05,616 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:28:05,618 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:28:05,618 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:28:05,620 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:28:05,855 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:28:05,857 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:28:05,857 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:28:05,858 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:28:05,859 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:28:05,860 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:28:05,860 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:28:05,861 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:28:05,861 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:28:05,862 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:28:05,956 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:28:05,968 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) [2022-07-22 22:28:05,979 INFO L158 Benchmark]: Toolchain (without parser) took 1240.52ms. Allocated memory was 67.1MB in the beginning and 94.4MB in the end (delta: 27.3MB). Free memory was 40.9MB in the beginning and 60.5MB in the end (delta: -19.6MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2022-07-22 22:28:05,980 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 67.1MB. Free memory was 47.8MB in the beginning and 47.8MB in the end (delta: 52.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 22:28:05,982 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1237.80ms. Allocated memory was 67.1MB in the beginning and 94.4MB in the end (delta: 27.3MB). Free memory was 40.7MB in the beginning and 60.5MB in the end (delta: -19.8MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2022-07-22 22:28:05,984 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 67.1MB. Free memory was 47.8MB in the beginning and 47.8MB in the end (delta: 52.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1237.80ms. Allocated memory was 67.1MB in the beginning and 94.4MB in the end (delta: 27.3MB). Free memory was 40.7MB in the beginning and 60.5MB in the end (delta: -19.8MB). Peak memory consumption was 13.2MB. 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