./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 e19ca921 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-e19ca92 [2021-12-22 14:02:16,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:02:16,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:02:16,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:02:16,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:02:16,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:02:16,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:02:16,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:02:16,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:02:17,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:02:17,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:02:17,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:02:17,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:02:17,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:02:17,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:02:17,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:02:17,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:02:17,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:02:17,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:02:17,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:02:17,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:02:17,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:02:17,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:02:17,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:02:17,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:02:17,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:02:17,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:02:17,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:02:17,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:02:17,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:02:17,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:02:17,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:02:17,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:02:17,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:02:17,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:02:17,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:02:17,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:02:17,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:02:17,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:02:17,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:02:17,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:02:17,034 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:02:17,053 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:02:17,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:02:17,054 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:02:17,054 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:02:17,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:02:17,055 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:02:17,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:02:17,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:02:17,056 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:02:17,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:02:17,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:02:17,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:02:17,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:02:17,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:02:17,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:02:17,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:02:17,057 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:02:17,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:02:17,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:02:17,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:02:17,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:02:17,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:02:17,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:02:17,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:02:17,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:02:17,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:02:17,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:02:17,060 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:02:17,060 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:02:17,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:02:17,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:02:17,060 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a [2021-12-22 14:02:17,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:02:17,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:02:17,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:02:17,281 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:02:17,283 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:02:17,284 INFO L432 ainManager$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 [2021-12-22 14:02:17,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a244b9428/36c6fdbe4eba4941be7c6e8d4493aee1/FLAGebc57c150 [2021-12-22 14:02:17,834 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:02:17,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2021-12-22 14:02:17,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a244b9428/36c6fdbe4eba4941be7c6e8d4493aee1/FLAGebc57c150 [2021-12-22 14:02:18,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a244b9428/36c6fdbe4eba4941be7c6e8d4493aee1 [2021-12-22 14:02:18,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:02:18,088 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:02:18,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:02:18,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:02:18,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:02:18,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:02:18" (1/1) ... [2021-12-22 14:02:18,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e1769de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:18, skipping insertion in model container [2021-12-22 14:02:18,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:02:18" (1/1) ... [2021-12-22 14:02:18,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:02:18,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:02:18,382 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] [2021-12-22 14:02:18,386 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] [2021-12-22 14:02:18,807 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 14:02:18,843 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:18,843 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:18,844 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:18,844 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:18,845 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:18,852 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:18,853 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:18,854 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:18,854 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:19,038 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 14:02:19,039 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 14:02:19,039 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 14:02:19,040 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 14:02:19,040 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 14:02:19,045 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 14:02:19,046 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 14:02:19,047 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 14:02:19,048 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 14:02:19,048 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 14:02:19,159 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:19,161 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:19,205 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:02:19,222 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:02:19,231 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] [2021-12-22 14:02:19,232 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] [2021-12-22 14:02:19,261 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 14:02:19,268 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:19,272 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:19,272 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:19,272 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:19,273 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:19,279 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:19,280 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:19,281 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:19,281 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:19,321 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 14:02:19,322 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 14:02:19,322 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 14:02:19,323 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 14:02:19,324 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 14:02:19,324 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 14:02:19,324 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 14:02:19,324 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 14:02:19,325 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 14:02:19,327 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 14:02:19,349 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:19,349 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:19,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:02:19,526 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:02:19,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:19 WrapperNode [2021-12-22 14:02:19,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:02:19,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:02:19,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:02:19,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:02:19,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:19" (1/1) ... [2021-12-22 14:02:19,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:19" (1/1) ... [2021-12-22 14:02:19,648 INFO L137 Inliner]: procedures = 689, calls = 1514, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 736 [2021-12-22 14:02:19,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:02:19,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:02:19,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:02:19,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:02:19,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:19" (1/1) ... [2021-12-22 14:02:19,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:19" (1/1) ... [2021-12-22 14:02:19,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:19" (1/1) ... [2021-12-22 14:02:19,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:19" (1/1) ... [2021-12-22 14:02:19,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:19" (1/1) ... [2021-12-22 14:02:19,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:19" (1/1) ... [2021-12-22 14:02:19,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:19" (1/1) ... [2021-12-22 14:02:19,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:02:19,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:02:19,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:02:19,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:02:19,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:19" (1/1) ... [2021-12-22 14:02:19,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:02:19,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:19,716 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) [2021-12-22 14:02:19,736 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 [2021-12-22 14:02:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-22 14:02:19,748 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-22 14:02:19,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:02:19,748 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-22 14:02:19,748 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-22 14:02:19,748 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-22 14:02:19,749 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-22 14:02:19,749 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-22 14:02:19,749 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-22 14:02:19,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:02:19,749 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-22 14:02:19,750 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-22 14:02:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 14:02:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 14:02:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:02:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:02:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:02:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:02:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:02:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-22 14:02:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-22 14:02:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-22 14:02:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-22 14:02:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-22 14:02:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-22 14:02:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-22 14:02:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-22 14:02:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:02:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:02:19,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:02:19,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:02:19,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:02:19,754 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-22 14:02:19,754 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-22 14:02:19,754 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-22 14:02:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-22 14:02:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:02:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-12-22 14:02:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-12-22 14:02:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-12-22 14:02:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-12-22 14:02:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:02:20,053 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:02:20,055 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:02:20,640 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:02:20,648 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:02:20,649 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-22 14:02:20,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:02:20 BoogieIcfgContainer [2021-12-22 14:02:20,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:02:20,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:02:20,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:02:20,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:02:20,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:02:18" (1/3) ... [2021-12-22 14:02:20,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aff7bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:02:20, skipping insertion in model container [2021-12-22 14:02:20,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:19" (2/3) ... [2021-12-22 14:02:20,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aff7bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:02:20, skipping insertion in model container [2021-12-22 14:02:20,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:02:20" (3/3) ... [2021-12-22 14:02:20,657 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness.i [2021-12-22 14:02:20,660 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:02:20,660 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:02:20,702 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:02:20,707 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 [2021-12-22 14:02:20,707 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:02:20,726 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) [2021-12-22 14:02:20,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-22 14:02:20,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:20,735 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] [2021-12-22 14:02:20,735 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:20,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:20,739 INFO L85 PathProgramCache]: Analyzing trace with hash -657799819, now seen corresponding path program 1 times [2021-12-22 14:02:20,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:20,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573116799] [2021-12-22 14:02:20,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:20,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:21,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:02:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:21,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 14:02:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:21,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:02:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:21,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 14:02:21,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:21,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573116799] [2021-12-22 14:02:21,232 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-22 14:02:21,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017066292] [2021-12-22 14:02:21,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:21,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:21,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:21,234 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) [2021-12-22 14:02:21,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 14:02:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:21,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 2206 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 14:02:21,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:21,787 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-22 14:02:21,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:02:21,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017066292] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:02:21,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:02:21,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 14:02:21,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244721162] [2021-12-22 14:02:21,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:02:21,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 14:02:21,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:21,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 14:02:21,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:02:21,817 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) [2021-12-22 14:02:21,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:21,856 INFO L93 Difference]: Finished difference Result 389 states and 571 transitions. [2021-12-22 14:02:21,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 14:02:21,888 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 [2021-12-22 14:02:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:21,902 INFO L225 Difference]: With dead ends: 389 [2021-12-22 14:02:21,902 INFO L226 Difference]: Without dead ends: 190 [2021-12-22 14:02:21,909 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 [2021-12-22 14:02:21,915 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 [2021-12-22 14:02:21,916 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] [2021-12-22 14:02:21,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-12-22 14:02:21,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-12-22 14:02:21,968 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) [2021-12-22 14:02:21,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 253 transitions. [2021-12-22 14:02:21,972 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 253 transitions. Word has length 99 [2021-12-22 14:02:21,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:21,973 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 253 transitions. [2021-12-22 14:02:21,973 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) [2021-12-22 14:02:21,973 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 253 transitions. [2021-12-22 14:02:21,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-22 14:02:21,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:21,977 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] [2021-12-22 14:02:22,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-22 14:02:22,192 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 [2021-12-22 14:02:22,193 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:22,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:22,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1585195372, now seen corresponding path program 1 times [2021-12-22 14:02:22,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:22,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597599108] [2021-12-22 14:02:22,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:22,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:22,248 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:02:22,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574430823] [2021-12-22 14:02:22,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:22,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:22,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:22,250 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) [2021-12-22 14:02:22,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 14:02:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:22,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 2360 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-22 14:02:22,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:22,848 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-22 14:02:22,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:02:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-22 14:02:23,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:23,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597599108] [2021-12-22 14:02:23,226 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:02:23,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574430823] [2021-12-22 14:02:23,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574430823] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-22 14:02:23,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:02:23,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2021-12-22 14:02:23,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202437993] [2021-12-22 14:02:23,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:02:23,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:02:23,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:23,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:02:23,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-22 14:02:23,228 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) [2021-12-22 14:02:23,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:23,275 INFO L93 Difference]: Finished difference Result 198 states and 261 transitions. [2021-12-22 14:02:23,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:02:23,275 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 [2021-12-22 14:02:23,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:23,277 INFO L225 Difference]: With dead ends: 198 [2021-12-22 14:02:23,277 INFO L226 Difference]: Without dead ends: 196 [2021-12-22 14:02:23,278 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 [2021-12-22 14:02:23,278 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 [2021-12-22 14:02:23,279 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] [2021-12-22 14:02:23,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-12-22 14:02:23,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2021-12-22 14:02:23,290 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) [2021-12-22 14:02:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 258 transitions. [2021-12-22 14:02:23,292 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 258 transitions. Word has length 133 [2021-12-22 14:02:23,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:23,292 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 258 transitions. [2021-12-22 14:02:23,293 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) [2021-12-22 14:02:23,293 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 258 transitions. [2021-12-22 14:02:23,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-22 14:02:23,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:23,296 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] [2021-12-22 14:02:23,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 14:02:23,510 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 [2021-12-22 14:02:23,510 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:23,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:23,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1587042414, now seen corresponding path program 1 times [2021-12-22 14:02:23,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:23,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973274996] [2021-12-22 14:02:23,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:23,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:23,560 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:02:23,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365741243] [2021-12-22 14:02:23,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:23,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:23,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:23,562 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) [2021-12-22 14:02:23,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 14:02:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:23,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 2365 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 14:02:23,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:24,096 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-22 14:02:24,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:02:24,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:24,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973274996] [2021-12-22 14:02:24,097 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:02:24,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365741243] [2021-12-22 14:02:24,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365741243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:02:24,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:02:24,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:02:24,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188643874] [2021-12-22 14:02:24,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:02:24,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:02:24,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:24,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:02:24,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:02:24,099 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) [2021-12-22 14:02:24,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:24,178 INFO L93 Difference]: Finished difference Result 379 states and 496 transitions. [2021-12-22 14:02:24,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:02:24,179 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 [2021-12-22 14:02:24,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:24,181 INFO L225 Difference]: With dead ends: 379 [2021-12-22 14:02:24,182 INFO L226 Difference]: Without dead ends: 195 [2021-12-22 14:02:24,182 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 [2021-12-22 14:02:24,183 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 [2021-12-22 14:02:24,183 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] [2021-12-22 14:02:24,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-12-22 14:02:24,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-12-22 14:02:24,193 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) [2021-12-22 14:02:24,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2021-12-22 14:02:24,194 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 133 [2021-12-22 14:02:24,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:24,194 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2021-12-22 14:02:24,195 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) [2021-12-22 14:02:24,195 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2021-12-22 14:02:24,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-22 14:02:24,196 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:24,196 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] [2021-12-22 14:02:24,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 14:02:24,415 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 [2021-12-22 14:02:24,416 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:24,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:24,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1650813770, now seen corresponding path program 1 times [2021-12-22 14:02:24,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:24,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96404013] [2021-12-22 14:02:24,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:24,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:24,451 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:02:24,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1909641770] [2021-12-22 14:02:24,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:24,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:24,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:24,467 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) [2021-12-22 14:02:24,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 14:02:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:24,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 2379 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 14:02:24,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:25,062 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-12-22 14:02:25,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:02:25,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:25,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96404013] [2021-12-22 14:02:25,063 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:02:25,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909641770] [2021-12-22 14:02:25,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909641770] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:02:25,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:02:25,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:02:25,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878927095] [2021-12-22 14:02:25,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:02:25,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:02:25,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:25,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:02:25,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:02:25,065 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) [2021-12-22 14:02:25,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:25,082 INFO L93 Difference]: Finished difference Result 375 states and 493 transitions. [2021-12-22 14:02:25,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:02:25,082 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 [2021-12-22 14:02:25,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:25,084 INFO L225 Difference]: With dead ends: 375 [2021-12-22 14:02:25,084 INFO L226 Difference]: Without dead ends: 197 [2021-12-22 14:02:25,085 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 [2021-12-22 14:02:25,085 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 [2021-12-22 14:02:25,086 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] [2021-12-22 14:02:25,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-22 14:02:25,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-12-22 14:02:25,104 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) [2021-12-22 14:02:25,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 258 transitions. [2021-12-22 14:02:25,105 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 258 transitions. Word has length 135 [2021-12-22 14:02:25,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:25,115 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 258 transitions. [2021-12-22 14:02:25,116 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) [2021-12-22 14:02:25,116 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 258 transitions. [2021-12-22 14:02:25,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-22 14:02:25,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:25,117 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] [2021-12-22 14:02:25,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 14:02:25,337 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 [2021-12-22 14:02:25,337 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:25,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:25,338 INFO L85 PathProgramCache]: Analyzing trace with hash 574277750, now seen corresponding path program 1 times [2021-12-22 14:02:25,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:25,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935829892] [2021-12-22 14:02:25,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:25,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:25,374 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:02:25,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735021697] [2021-12-22 14:02:25,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:25,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:25,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:25,392 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) [2021-12-22 14:02:25,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 14:02:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:25,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 2417 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-22 14:02:25,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 153 proven. 1 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-12-22 14:02:26,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:02:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-22 14:02:26,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:26,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935829892] [2021-12-22 14:02:26,441 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:02:26,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735021697] [2021-12-22 14:02:26,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735021697] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:02:26,442 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 14:02:26,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-12-22 14:02:26,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840071424] [2021-12-22 14:02:26,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 14:02:26,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 14:02:26,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:26,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 14:02:26,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-22 14:02:26,443 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) [2021-12-22 14:02:26,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:26,542 INFO L93 Difference]: Finished difference Result 384 states and 500 transitions. [2021-12-22 14:02:26,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:02:26,543 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 [2021-12-22 14:02:26,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:26,544 INFO L225 Difference]: With dead ends: 384 [2021-12-22 14:02:26,544 INFO L226 Difference]: Without dead ends: 199 [2021-12-22 14:02:26,545 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 [2021-12-22 14:02:26,546 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, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:02:26,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1453 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 14:02:26,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-12-22 14:02:26,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-12-22 14:02:26,565 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) [2021-12-22 14:02:26,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 260 transitions. [2021-12-22 14:02:26,566 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 260 transitions. Word has length 139 [2021-12-22 14:02:26,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:26,566 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 260 transitions. [2021-12-22 14:02:26,567 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) [2021-12-22 14:02:26,567 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 260 transitions. [2021-12-22 14:02:26,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-22 14:02:26,568 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:26,568 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] [2021-12-22 14:02:26,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 14:02:26,787 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 [2021-12-22 14:02:26,788 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:26,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:26,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1733366986, now seen corresponding path program 2 times [2021-12-22 14:02:26,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:26,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64809404] [2021-12-22 14:02:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:26,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:26,824 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:02:26,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [428750650] [2021-12-22 14:02:26,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 14:02:26,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:26,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:26,825 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) [2021-12-22 14:02:26,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 14:02:27,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 14:02:27,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 14:02:27,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 2455 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-22 14:02:27,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 161 proven. 4 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-22 14:02:27,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:02:28,350 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-12-22 14:02:28,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:28,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64809404] [2021-12-22 14:02:28,350 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:02:28,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428750650] [2021-12-22 14:02:28,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428750650] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:02:28,351 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 14:02:28,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-12-22 14:02:28,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980823668] [2021-12-22 14:02:28,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 14:02:28,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 14:02:28,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:28,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 14:02:28,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-22 14:02:28,353 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) [2021-12-22 14:02:28,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:28,483 INFO L93 Difference]: Finished difference Result 388 states and 504 transitions. [2021-12-22 14:02:28,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 14:02:28,484 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 [2021-12-22 14:02:28,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:28,488 INFO L225 Difference]: With dead ends: 388 [2021-12-22 14:02:28,488 INFO L226 Difference]: Without dead ends: 201 [2021-12-22 14:02:28,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-12-22 14:02:28,491 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 [2021-12-22 14:02:28,492 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] [2021-12-22 14:02:28,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-12-22 14:02:28,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2021-12-22 14:02:28,507 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) [2021-12-22 14:02:28,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 262 transitions. [2021-12-22 14:02:28,509 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 262 transitions. Word has length 143 [2021-12-22 14:02:28,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:28,510 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 262 transitions. [2021-12-22 14:02:28,510 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) [2021-12-22 14:02:28,510 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 262 transitions. [2021-12-22 14:02:28,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-22 14:02:28,512 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:28,513 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] [2021-12-22 14:02:28,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-22 14:02:28,719 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 [2021-12-22 14:02:28,719 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:28,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:28,720 INFO L85 PathProgramCache]: Analyzing trace with hash 833600758, now seen corresponding path program 3 times [2021-12-22 14:02:28,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:28,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613196215] [2021-12-22 14:02:28,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:28,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:28,786 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:02:28,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430564363] [2021-12-22 14:02:28,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 14:02:28,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:28,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:28,788 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) [2021-12-22 14:02:28,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 14:02:31,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-22 14:02:31,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 14:02:31,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 2081 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-22 14:02:31,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:31,527 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 43 proven. 9 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-12-22 14:02:31,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:02:32,109 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-22 14:02:32,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:32,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613196215] [2021-12-22 14:02:32,110 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:02:32,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430564363] [2021-12-22 14:02:32,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430564363] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:02:32,110 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 14:02:32,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-12-22 14:02:32,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472641195] [2021-12-22 14:02:32,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 14:02:32,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-22 14:02:32,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:32,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-22 14:02:32,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-12-22 14:02:32,111 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) [2021-12-22 14:02:32,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:32,418 INFO L93 Difference]: Finished difference Result 392 states and 508 transitions. [2021-12-22 14:02:32,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 14:02:32,419 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 [2021-12-22 14:02:32,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:32,420 INFO L225 Difference]: With dead ends: 392 [2021-12-22 14:02:32,420 INFO L226 Difference]: Without dead ends: 203 [2021-12-22 14:02:32,421 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 [2021-12-22 14:02:32,421 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, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:02:32,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 2890 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 14:02:32,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-22 14:02:32,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2021-12-22 14:02:32,427 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) [2021-12-22 14:02:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 264 transitions. [2021-12-22 14:02:32,428 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 264 transitions. Word has length 147 [2021-12-22 14:02:32,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:32,428 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 264 transitions. [2021-12-22 14:02:32,428 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) [2021-12-22 14:02:32,428 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 264 transitions. [2021-12-22 14:02:32,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-22 14:02:32,429 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:32,429 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] [2021-12-22 14:02:32,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-22 14:02:32,641 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 [2021-12-22 14:02:32,641 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:32,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:32,641 INFO L85 PathProgramCache]: Analyzing trace with hash 579206582, now seen corresponding path program 4 times [2021-12-22 14:02:32,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:32,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753210056] [2021-12-22 14:02:32,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:32,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:32,703 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:02:32,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2147056731] [2021-12-22 14:02:32,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-22 14:02:32,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:32,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:32,704 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) [2021-12-22 14:02:32,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-22 14:02:33,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-22 14:02:33,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 14:02:33,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-22 14:02:33,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:33,629 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 58 proven. 16 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2021-12-22 14:02:33,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:02:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 50 proven. 16 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-12-22 14:02:34,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:34,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753210056] [2021-12-22 14:02:34,136 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:02:34,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147056731] [2021-12-22 14:02:34,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147056731] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:02:34,136 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 14:02:34,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-12-22 14:02:34,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780988644] [2021-12-22 14:02:34,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 14:02:34,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-22 14:02:34,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:34,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-22 14:02:34,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-12-22 14:02:34,138 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) [2021-12-22 14:02:34,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:34,292 INFO L93 Difference]: Finished difference Result 396 states and 512 transitions. [2021-12-22 14:02:34,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 14:02:34,293 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 [2021-12-22 14:02:34,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:34,294 INFO L225 Difference]: With dead ends: 396 [2021-12-22 14:02:34,294 INFO L226 Difference]: Without dead ends: 205 [2021-12-22 14:02:34,294 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 [2021-12-22 14:02:34,295 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 [2021-12-22 14:02:34,295 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] [2021-12-22 14:02:34,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-12-22 14:02:34,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2021-12-22 14:02:34,302 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) [2021-12-22 14:02:34,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 266 transitions. [2021-12-22 14:02:34,303 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 266 transitions. Word has length 151 [2021-12-22 14:02:34,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:34,303 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 266 transitions. [2021-12-22 14:02:34,304 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) [2021-12-22 14:02:34,304 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 266 transitions. [2021-12-22 14:02:34,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-22 14:02:34,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:34,306 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] [2021-12-22 14:02:34,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-22 14:02:34,531 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 [2021-12-22 14:02:34,531 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:34,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:34,531 INFO L85 PathProgramCache]: Analyzing trace with hash -519410314, now seen corresponding path program 5 times [2021-12-22 14:02:34,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:34,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165105419] [2021-12-22 14:02:34,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:34,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:34,579 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:02:34,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [361597419] [2021-12-22 14:02:34,579 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-22 14:02:34,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:34,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:34,580 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) [2021-12-22 14:02:34,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-22 14:02:35,783 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-12-22 14:02:35,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 14:02:35,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-22 14:02:35,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 209 proven. 25 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-12-22 14:02:36,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:02:37,108 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-22 14:02:37,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:37,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165105419] [2021-12-22 14:02:37,109 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:02:37,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361597419] [2021-12-22 14:02:37,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361597419] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:02:37,109 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 14:02:37,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2021-12-22 14:02:37,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510587011] [2021-12-22 14:02:37,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 14:02:37,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-22 14:02:37,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:37,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-22 14:02:37,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2021-12-22 14:02:37,112 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) [2021-12-22 14:02:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:37,681 INFO L93 Difference]: Finished difference Result 400 states and 516 transitions. [2021-12-22 14:02:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 14:02:37,682 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 [2021-12-22 14:02:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:37,683 INFO L225 Difference]: With dead ends: 400 [2021-12-22 14:02:37,683 INFO L226 Difference]: Without dead ends: 207 [2021-12-22 14:02:37,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2021-12-22 14:02:37,684 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 49 mSDsluCounter, 3628 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:02:37,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 3873 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 14:02:37,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-22 14:02:37,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2021-12-22 14:02:37,689 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) [2021-12-22 14:02:37,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 268 transitions. [2021-12-22 14:02:37,690 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 268 transitions. Word has length 155 [2021-12-22 14:02:37,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:37,690 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 268 transitions. [2021-12-22 14:02:37,691 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) [2021-12-22 14:02:37,691 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 268 transitions. [2021-12-22 14:02:37,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-22 14:02:37,692 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:37,692 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] [2021-12-22 14:02:37,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-22 14:02:37,899 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 [2021-12-22 14:02:37,899 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:37,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:37,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1604701238, now seen corresponding path program 6 times [2021-12-22 14:02:37,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:37,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368647186] [2021-12-22 14:02:37,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:37,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:37,940 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:02:37,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062041095] [2021-12-22 14:02:37,945 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-22 14:02:37,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:37,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:37,964 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) [2021-12-22 14:02:37,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process