./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_priority_queue_init_dynamic_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 fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:21:14,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:21:14,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:21:14,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:21:14,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:21:14,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:21:14,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:21:14,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:21:14,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:21:14,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:21:14,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:21:14,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:21:14,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:21:14,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:21:14,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:21:14,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:21:14,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:21:14,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:21:14,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:21:14,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:21:14,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:21:14,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:21:14,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:21:14,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:21:14,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:21:14,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:21:14,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:21:14,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:21:14,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:21:14,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:21:14,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:21:14,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:21:14,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:21:14,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:21:14,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:21:14,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:21:14,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:21:14,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:21:14,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:21:14,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:21:14,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:21:14,156 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:21:14,179 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:21:14,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:21:14,180 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:21:14,180 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:21:14,181 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:21:14,181 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:21:14,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:21:14,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:21:14,182 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:21:14,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:21:14,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:21:14,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:21:14,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:21:14,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:21:14,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:21:14,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:21:14,184 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:21:14,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:21:14,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:21:14,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:21:14,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:21:14,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:21:14,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:21:14,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:21:14,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:21:14,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:21:14,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:21:14,198 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:21:14,199 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:21:14,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:21:14,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a [2021-12-28 03:21:14,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:21:14,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:21:14,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:21:14,542 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:21:14,543 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:21:14,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2021-12-28 03:21:14,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d2600925/731594edface4c9fbfe69b6fbe76acda/FLAGef9f53c4c [2021-12-28 03:21:15,068 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:21:15,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2021-12-28 03:21:15,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d2600925/731594edface4c9fbfe69b6fbe76acda/FLAGef9f53c4c [2021-12-28 03:21:15,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d2600925/731594edface4c9fbfe69b6fbe76acda [2021-12-28 03:21:15,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:21:15,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:21:15,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:21:15,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:21:15,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:21:15,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:21:15" (1/1) ... [2021-12-28 03:21:15,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b270cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:15, skipping insertion in model container [2021-12-28 03:21:15,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:21:15" (1/1) ... [2021-12-28 03:21:15,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:21:15,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:21:15,657 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_priority_queue_init_dynamic_harness.i[4505,4518] [2021-12-28 03:21:15,671 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_priority_queue_init_dynamic_harness.i[4565,4578] [2021-12-28 03:21:16,121 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:21:16,180 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,183 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,184 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,185 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,192 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,192 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,193 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,194 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,439 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:21:16,439 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:21:16,440 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:21:16,441 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:21:16,441 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:21:16,442 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:21:16,442 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:21:16,443 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:21:16,443 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:21:16,443 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:21:16,543 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,543 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:21:16,611 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:21:16,630 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_priority_queue_init_dynamic_harness.i[4505,4518] [2021-12-28 03:21:16,630 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_priority_queue_init_dynamic_harness.i[4565,4578] [2021-12-28 03:21:16,674 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:21:16,689 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,692 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,693 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,693 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,694 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,701 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,702 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,702 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,703 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,721 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:21:16,722 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:21:16,722 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:21:16,723 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:21:16,723 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:21:16,724 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:21:16,724 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:21:16,724 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:21:16,724 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:21:16,725 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:21:16,747 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,748 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:16,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:21:17,007 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:21:17,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:17 WrapperNode [2021-12-28 03:21:17,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:21:17,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:21:17,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:21:17,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:21:17,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:17" (1/1) ... [2021-12-28 03:21:17,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:17" (1/1) ... [2021-12-28 03:21:17,134 INFO L137 Inliner]: procedures = 689, calls = 1514, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 736 [2021-12-28 03:21:17,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:21:17,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:21:17,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:21:17,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:21:17,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:17" (1/1) ... [2021-12-28 03:21:17,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:17" (1/1) ... [2021-12-28 03:21:17,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:17" (1/1) ... [2021-12-28 03:21:17,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:17" (1/1) ... [2021-12-28 03:21:17,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:17" (1/1) ... [2021-12-28 03:21:17,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:17" (1/1) ... [2021-12-28 03:21:17,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:17" (1/1) ... [2021-12-28 03:21:17,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:21:17,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:21:17,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:21:17,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:21:17,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:17" (1/1) ... [2021-12-28 03:21:17,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:21:17,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:17,222 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 03:21:17,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 03:21:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-28 03:21:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-28 03:21:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:21:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-28 03:21:17,268 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-28 03:21:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-28 03:21:17,268 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-28 03:21:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-28 03:21:17,268 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-28 03:21:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:21:17,269 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-28 03:21:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-28 03:21:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:21:17,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:21:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:21:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:21:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:21:17,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:21:17,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:21:17,271 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:21:17,271 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:21:17,271 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-28 03:21:17,271 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-28 03:21:17,271 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-28 03:21:17,272 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-28 03:21:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-28 03:21:17,272 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-28 03:21:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:21:17,272 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:21:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:21:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:21:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:21:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-28 03:21:17,273 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-28 03:21:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-28 03:21:17,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-28 03:21:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:21:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-12-28 03:21:17,274 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-12-28 03:21:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-12-28 03:21:17,274 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-12-28 03:21:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:21:17,672 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:21:17,673 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:21:18,555 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:21:18,562 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:21:18,563 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-28 03:21:18,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:21:18 BoogieIcfgContainer [2021-12-28 03:21:18,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:21:18,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:21:18,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:21:18,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:21:18,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:21:15" (1/3) ... [2021-12-28 03:21:18,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c5df57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:21:18, skipping insertion in model container [2021-12-28 03:21:18,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:17" (2/3) ... [2021-12-28 03:21:18,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c5df57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:21:18, skipping insertion in model container [2021-12-28 03:21:18,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:21:18" (3/3) ... [2021-12-28 03:21:18,571 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness.i [2021-12-28 03:21:18,575 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:21:18,575 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:21:18,617 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:21:18,625 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:21:18,625 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:21:18,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 129 states have (on average 1.2635658914728682) internal successors, (163), 129 states have internal predecessors, (163), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-12-28 03:21:18,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-28 03:21:18,648 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:18,649 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:18,649 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:18,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:18,652 INFO L85 PathProgramCache]: Analyzing trace with hash -657799819, now seen corresponding path program 1 times [2021-12-28 03:21:18,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:18,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814621183] [2021-12-28 03:21:18,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:18,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:19,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:21:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:19,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:21:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:19,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:21:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:19,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:21:19,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:19,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814621183] [2021-12-28 03:21:19,148 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-28 03:21:19,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19108158] [2021-12-28 03:21:19,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:19,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:19,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:19,150 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:21:19,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:21:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:19,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 2206 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 03:21:19,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:19,690 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-28 03:21:19,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:19,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19108158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:19,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:19,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 03:21:19,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955960647] [2021-12-28 03:21:19,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:19,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 03:21:19,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:19,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 03:21:19,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:21:19,714 INFO L87 Difference]: Start difference. First operand has 197 states, 129 states have (on average 1.2635658914728682) internal successors, (163), 129 states have internal predecessors, (163), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-28 03:21:19,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:19,741 INFO L93 Difference]: Finished difference Result 389 states and 571 transitions. [2021-12-28 03:21:19,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 03:21:19,743 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 99 [2021-12-28 03:21:19,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:19,749 INFO L225 Difference]: With dead ends: 389 [2021-12-28 03:21:19,749 INFO L226 Difference]: Without dead ends: 190 [2021-12-28 03:21:19,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:21:19,754 INFO L933 BasicCegarLoop]: 261 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, 261 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:19,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:21:19,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-12-28 03:21:19,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-12-28 03:21:19,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 121 states have (on average 1.2314049586776858) internal successors, (149), 123 states have internal predecessors, (149), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-12-28 03:21:19,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 253 transitions. [2021-12-28 03:21:19,789 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 253 transitions. Word has length 99 [2021-12-28 03:21:19,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:19,790 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 253 transitions. [2021-12-28 03:21:19,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-28 03:21:19,790 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 253 transitions. [2021-12-28 03:21:19,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-28 03:21:19,793 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:19,793 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:19,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:20,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-28 03:21:20,004 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:20,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:20,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1585195372, now seen corresponding path program 1 times [2021-12-28 03:21:20,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:20,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978747558] [2021-12-28 03:21:20,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:20,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:20,060 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:20,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894503769] [2021-12-28 03:21:20,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:20,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:20,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:20,067 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) [2021-12-28 03:21:20,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:21:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:20,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 2360 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-28 03:21:20,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:20,653 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-28 03:21:20,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:21:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-28 03:21:21,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:21,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978747558] [2021-12-28 03:21:21,059 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:21,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894503769] [2021-12-28 03:21:21,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894503769] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 03:21:21,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:21:21,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2021-12-28 03:21:21,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546413192] [2021-12-28 03:21:21,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:21,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:21:21,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:21,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:21:21,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:21:21,062 INFO L87 Difference]: Start difference. First operand 190 states and 253 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-12-28 03:21:21,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:21,131 INFO L93 Difference]: Finished difference Result 198 states and 261 transitions. [2021-12-28 03:21:21,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:21:21,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 133 [2021-12-28 03:21:21,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:21,135 INFO L225 Difference]: With dead ends: 198 [2021-12-28 03:21:21,135 INFO L226 Difference]: Without dead ends: 196 [2021-12-28 03:21:21,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:21:21,137 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 6 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:21,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 985 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:21:21,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-12-28 03:21:21,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2021-12-28 03:21:21,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 124 states have (on average 1.2258064516129032) internal successors, (152), 127 states have internal predecessors, (152), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-28 03:21:21,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 258 transitions. [2021-12-28 03:21:21,152 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 258 transitions. Word has length 133 [2021-12-28 03:21:21,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:21,153 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 258 transitions. [2021-12-28 03:21:21,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-12-28 03:21:21,153 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 258 transitions. [2021-12-28 03:21:21,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-28 03:21:21,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:21,155 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:21,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:21,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-28 03:21:21,380 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:21,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:21,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1587042414, now seen corresponding path program 1 times [2021-12-28 03:21:21,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:21,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384066177] [2021-12-28 03:21:21,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:21,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:21,452 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:21,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063680675] [2021-12-28 03:21:21,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:21,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:21,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:21,468 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) [2021-12-28 03:21:21,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:21:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:21,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 2365 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 03:21:21,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:22,062 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-28 03:21:22,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:22,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:22,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384066177] [2021-12-28 03:21:22,063 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:22,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063680675] [2021-12-28 03:21:22,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063680675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:22,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:22,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:21:22,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157293353] [2021-12-28 03:21:22,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:22,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:21:22,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:22,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:21:22,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:21:22,065 INFO L87 Difference]: Start difference. First operand 195 states and 258 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-28 03:21:22,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:22,131 INFO L93 Difference]: Finished difference Result 379 states and 496 transitions. [2021-12-28 03:21:22,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:21:22,132 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 133 [2021-12-28 03:21:22,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:22,138 INFO L225 Difference]: With dead ends: 379 [2021-12-28 03:21:22,138 INFO L226 Difference]: Without dead ends: 195 [2021-12-28 03:21:22,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:21:22,143 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 13 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:22,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1213 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:21:22,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-12-28 03:21:22,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-12-28 03:21:22,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 124 states have (on average 1.217741935483871) internal successors, (151), 127 states have internal predecessors, (151), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-28 03:21:22,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2021-12-28 03:21:22,158 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 133 [2021-12-28 03:21:22,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:22,158 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2021-12-28 03:21:22,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-28 03:21:22,159 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2021-12-28 03:21:22,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 03:21:22,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:22,160 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:22,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:22,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:22,382 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:22,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:22,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1650813770, now seen corresponding path program 1 times [2021-12-28 03:21:22,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:22,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770918518] [2021-12-28 03:21:22,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:22,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:22,421 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:22,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1065256090] [2021-12-28 03:21:22,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:22,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:22,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:22,436 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) [2021-12-28 03:21:22,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:21:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:22,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 2379 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 03:21:22,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:23,038 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-12-28 03:21:23,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:23,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:23,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770918518] [2021-12-28 03:21:23,039 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:23,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065256090] [2021-12-28 03:21:23,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065256090] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:23,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:23,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:21:23,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839793393] [2021-12-28 03:21:23,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:23,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:21:23,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:23,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:21:23,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:21:23,041 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-28 03:21:23,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:23,058 INFO L93 Difference]: Finished difference Result 375 states and 493 transitions. [2021-12-28 03:21:23,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:21:23,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 135 [2021-12-28 03:21:23,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:23,060 INFO L225 Difference]: With dead ends: 375 [2021-12-28 03:21:23,060 INFO L226 Difference]: Without dead ends: 197 [2021-12-28 03:21:23,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:21:23,062 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 1 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:23,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 497 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:21:23,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-28 03:21:23,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-12-28 03:21:23,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 125 states have (on average 1.216) internal successors, (152), 128 states have internal predecessors, (152), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-28 03:21:23,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 258 transitions. [2021-12-28 03:21:23,080 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 258 transitions. Word has length 135 [2021-12-28 03:21:23,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:23,080 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 258 transitions. [2021-12-28 03:21:23,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-28 03:21:23,081 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 258 transitions. [2021-12-28 03:21:23,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-28 03:21:23,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:23,082 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:23,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:23,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:23,283 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:23,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:23,283 INFO L85 PathProgramCache]: Analyzing trace with hash 574277750, now seen corresponding path program 1 times [2021-12-28 03:21:23,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:23,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707465214] [2021-12-28 03:21:23,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:23,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:23,344 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:23,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601402058] [2021-12-28 03:21:23,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:23,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:23,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:23,351 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) [2021-12-28 03:21:23,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:21:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:23,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 2417 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-28 03:21:23,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:24,053 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 153 proven. 1 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-12-28 03:21:24,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:21:24,502 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-28 03:21:24,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:24,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707465214] [2021-12-28 03:21:24,502 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:24,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601402058] [2021-12-28 03:21:24,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601402058] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:21:24,503 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:21:24,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-12-28 03:21:24,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771334362] [2021-12-28 03:21:24,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:21:24,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-28 03:21:24,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:24,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-28 03:21:24,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:21:24,504 INFO L87 Difference]: Start difference. First operand 196 states and 258 transitions. Second operand has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 13 states have internal predecessors, (82), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-12-28 03:21:24,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:24,593 INFO L93 Difference]: Finished difference Result 384 states and 500 transitions. [2021-12-28 03:21:24,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:21:24,602 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 13 states have internal predecessors, (82), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 139 [2021-12-28 03:21:24,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:24,603 INFO L225 Difference]: With dead ends: 384 [2021-12-28 03:21:24,603 INFO L226 Difference]: Without dead ends: 199 [2021-12-28 03:21:24,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 264 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:21:24,605 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 39 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:24,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1453 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:21:24,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-12-28 03:21:24,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-12-28 03:21:24,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 127 states have (on average 1.2125984251968505) internal successors, (154), 130 states have internal predecessors, (154), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-28 03:21:24,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 260 transitions. [2021-12-28 03:21:24,617 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 260 transitions. Word has length 139 [2021-12-28 03:21:24,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:24,617 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 260 transitions. [2021-12-28 03:21:24,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 13 states have internal predecessors, (82), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-12-28 03:21:24,617 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 260 transitions. [2021-12-28 03:21:24,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-28 03:21:24,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:24,618 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:24,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:24,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:24,820 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:24,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:24,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1733366986, now seen corresponding path program 2 times [2021-12-28 03:21:24,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:24,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657987011] [2021-12-28 03:21:24,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:24,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:24,910 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:24,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579825102] [2021-12-28 03:21:24,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:21:24,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:24,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:24,923 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) [2021-12-28 03:21:24,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 03:21:25,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:21:25,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:21:25,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 2455 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-28 03:21:25,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:26,367 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 161 proven. 4 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-28 03:21:26,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:21:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-12-28 03:21:26,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:26,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657987011] [2021-12-28 03:21:26,906 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:26,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579825102] [2021-12-28 03:21:26,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579825102] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:21:26,906 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:21:26,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-12-28 03:21:26,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949937023] [2021-12-28 03:21:26,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:21:26,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 03:21:26,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:26,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 03:21:26,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:21:26,910 INFO L87 Difference]: Start difference. First operand 198 states and 260 transitions. Second operand has 15 states, 13 states have (on average 6.615384615384615) internal successors, (86), 15 states have internal predecessors, (86), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-12-28 03:21:27,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:27,043 INFO L93 Difference]: Finished difference Result 388 states and 504 transitions. [2021-12-28 03:21:27,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:21:27,043 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.615384615384615) internal successors, (86), 15 states have internal predecessors, (86), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 143 [2021-12-28 03:21:27,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:27,045 INFO L225 Difference]: With dead ends: 388 [2021-12-28 03:21:27,045 INFO L226 Difference]: Without dead ends: 201 [2021-12-28 03:21:27,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:21:27,049 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 32 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2181 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:27,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 2181 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:21:27,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-12-28 03:21:27,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2021-12-28 03:21:27,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 129 states have (on average 1.2093023255813953) internal successors, (156), 132 states have internal predecessors, (156), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-28 03:21:27,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 262 transitions. [2021-12-28 03:21:27,076 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 262 transitions. Word has length 143 [2021-12-28 03:21:27,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:27,076 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 262 transitions. [2021-12-28 03:21:27,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.615384615384615) internal successors, (86), 15 states have internal predecessors, (86), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-12-28 03:21:27,077 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 262 transitions. [2021-12-28 03:21:27,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-28 03:21:27,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:27,078 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:27,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-28 03:21:27,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:27,291 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:27,292 INFO L85 PathProgramCache]: Analyzing trace with hash 833600758, now seen corresponding path program 3 times [2021-12-28 03:21:27,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:27,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998327542] [2021-12-28 03:21:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:27,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:27,377 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:27,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76281038] [2021-12-28 03:21:27,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 03:21:27,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:27,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:27,388 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) [2021-12-28 03:21:27,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 03:21:30,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-28 03:21:30,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:21:30,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 2081 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-28 03:21:30,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:30,928 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 43 proven. 9 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-12-28 03:21:30,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:21:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-28 03:21:31,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:31,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998327542] [2021-12-28 03:21:31,525 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:31,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76281038] [2021-12-28 03:21:31,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76281038] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:21:31,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:21:31,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-12-28 03:21:31,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481015819] [2021-12-28 03:21:31,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:21:31,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-28 03:21:31,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:31,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-28 03:21:31,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-12-28 03:21:31,526 INFO L87 Difference]: Start difference. First operand 200 states and 262 transitions. Second operand has 19 states, 17 states have (on average 4.529411764705882) internal successors, (77), 19 states have internal predecessors, (77), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2021-12-28 03:21:31,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:31,909 INFO L93 Difference]: Finished difference Result 392 states and 508 transitions. [2021-12-28 03:21:31,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 03:21:31,910 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.529411764705882) internal successors, (77), 19 states have internal predecessors, (77), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 147 [2021-12-28 03:21:31,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:31,911 INFO L225 Difference]: With dead ends: 392 [2021-12-28 03:21:31,912 INFO L226 Difference]: Without dead ends: 203 [2021-12-28 03:21:31,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 274 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2021-12-28 03:21:31,913 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 34 mSDsluCounter, 2646 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:31,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 2890 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:21:31,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-28 03:21:31,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2021-12-28 03:21:31,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 131 states have (on average 1.2061068702290076) internal successors, (158), 134 states have internal predecessors, (158), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-28 03:21:31,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 264 transitions. [2021-12-28 03:21:31,923 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 264 transitions. Word has length 147 [2021-12-28 03:21:31,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:31,923 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 264 transitions. [2021-12-28 03:21:31,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.529411764705882) internal successors, (77), 19 states have internal predecessors, (77), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2021-12-28 03:21:31,924 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 264 transitions. [2021-12-28 03:21:31,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-28 03:21:31,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:31,925 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:31,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:32,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:32,140 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:32,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:32,141 INFO L85 PathProgramCache]: Analyzing trace with hash 579206582, now seen corresponding path program 4 times [2021-12-28 03:21:32,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:32,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646685315] [2021-12-28 03:21:32,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:32,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:32,223 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:32,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250931185] [2021-12-28 03:21:32,224 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-28 03:21:32,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:32,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:32,245 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) [2021-12-28 03:21:32,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 03:21:32,977 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-28 03:21:32,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:21:32,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-28 03:21:32,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 58 proven. 16 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2021-12-28 03:21:33,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:21:33,825 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 50 proven. 16 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-12-28 03:21:33,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:33,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646685315] [2021-12-28 03:21:33,826 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:33,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250931185] [2021-12-28 03:21:33,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250931185] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:21:33,826 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:21:33,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-12-28 03:21:33,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945758208] [2021-12-28 03:21:33,826 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:21:33,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-28 03:21:33,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:33,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-28 03:21:33,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-12-28 03:21:33,827 INFO L87 Difference]: Start difference. First operand 202 states and 264 transitions. Second operand has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 19 states have internal predecessors, (81), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) [2021-12-28 03:21:34,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:34,026 INFO L93 Difference]: Finished difference Result 396 states and 512 transitions. [2021-12-28 03:21:34,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 03:21:34,027 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 19 states have internal predecessors, (81), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) Word has length 151 [2021-12-28 03:21:34,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:34,028 INFO L225 Difference]: With dead ends: 396 [2021-12-28 03:21:34,029 INFO L226 Difference]: Without dead ends: 205 [2021-12-28 03:21:34,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-12-28 03:21:34,030 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 41 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:34,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 2187 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:21:34,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-12-28 03:21:34,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2021-12-28 03:21:34,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 133 states have (on average 1.2030075187969924) internal successors, (160), 136 states have internal predecessors, (160), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-28 03:21:34,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 266 transitions. [2021-12-28 03:21:34,051 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 266 transitions. Word has length 151 [2021-12-28 03:21:34,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:34,052 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 266 transitions. [2021-12-28 03:21:34,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 19 states have internal predecessors, (81), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) [2021-12-28 03:21:34,052 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 266 transitions. [2021-12-28 03:21:34,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-28 03:21:34,053 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:34,053 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:34,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:34,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-28 03:21:34,254 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:34,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:34,254 INFO L85 PathProgramCache]: Analyzing trace with hash -519410314, now seen corresponding path program 5 times [2021-12-28 03:21:34,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:34,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752840100] [2021-12-28 03:21:34,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:34,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:34,326 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:34,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1858367168] [2021-12-28 03:21:34,327 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-28 03:21:34,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:34,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:34,348 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) [2021-12-28 03:21:34,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 03:21:36,059 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-12-28 03:21:36,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:21:36,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-28 03:21:36,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 209 proven. 25 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-12-28 03:21:36,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:21:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-28 03:21:37,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:37,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752840100] [2021-12-28 03:21:37,530 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:37,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858367168] [2021-12-28 03:21:37,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858367168] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:21:37,530 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:21:37,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2021-12-28 03:21:37,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854549344] [2021-12-28 03:21:37,531 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:21:37,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-28 03:21:37,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:37,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-28 03:21:37,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2021-12-28 03:21:37,532 INFO L87 Difference]: Start difference. First operand 204 states and 266 transitions. Second operand has 27 states, 25 states have (on average 3.92) internal successors, (98), 27 states have internal predecessors, (98), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-12-28 03:21:40,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:40,372 INFO L93 Difference]: Finished difference Result 400 states and 516 transitions. [2021-12-28 03:21:40,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 03:21:40,372 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.92) internal successors, (98), 27 states have internal predecessors, (98), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 155 [2021-12-28 03:21:40,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:40,373 INFO L225 Difference]: With dead ends: 400 [2021-12-28 03:21:40,374 INFO L226 Difference]: Without dead ends: 207 [2021-12-28 03:21:40,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2021-12-28 03:21:40,375 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 49 mSDsluCounter, 3628 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3873 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:40,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 3873 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 03:21:40,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-28 03:21:40,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2021-12-28 03:21:40,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 135 states have (on average 1.2) internal successors, (162), 138 states have internal predecessors, (162), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-28 03:21:40,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 268 transitions. [2021-12-28 03:21:40,381 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 268 transitions. Word has length 155 [2021-12-28 03:21:40,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:40,381 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 268 transitions. [2021-12-28 03:21:40,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.92) internal successors, (98), 27 states have internal predecessors, (98), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-12-28 03:21:40,381 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 268 transitions. [2021-12-28 03:21:40,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-28 03:21:40,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:40,382 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:40,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-28 03:21:40,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:40,590 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:40,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:40,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1604701238, now seen corresponding path program 6 times [2021-12-28 03:21:40,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:40,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088977187] [2021-12-28 03:21:40,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:40,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:40,641 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:40,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313328745] [2021-12-28 03:21:40,641 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-28 03:21:40,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:40,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:40,656 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) [2021-12-28 03:21:40,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process