./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.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 f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:29:24,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:29:24,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:29:25,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:29:25,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:29:25,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:29:25,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:29:25,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:29:25,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:29:25,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:29:25,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:29:25,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:29:25,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:29:25,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:29:25,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:29:25,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:29:25,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:29:25,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:29:25,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:29:25,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:29:25,054 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:29:25,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:29:25,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:29:25,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:29:25,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:29:25,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:29:25,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:29:25,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:29:25,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:29:25,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:29:25,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:29:25,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:29:25,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:29:25,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:29:25,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:29:25,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:29:25,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:29:25,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:29:25,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:29:25,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:29:25,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:29:25,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:29:25,080 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:29:25,106 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:29:25,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:29:25,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:29:25,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:29:25,108 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:29:25,108 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:29:25,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:29:25,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:29:25,108 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:29:25,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:29:25,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:29:25,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:29:25,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:29:25,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:29:25,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:29:25,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:29:25,109 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:29:25,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:29:25,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:29:25,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:29:25,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:29:25,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:29:25,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:29:25,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:29:25,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:29:25,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:29:25,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:29:25,111 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:29:25,111 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:29:25,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:29:25,111 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 [2022-07-22 22:29:25,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:29:25,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:29:25,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:29:25,318 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:29:25,318 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:29:25,319 INFO L432 ainManager$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-1.i [2022-07-22 22:29:25,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a35f61d26/d36b67d471804505ba4bdb217347bf56/FLAGbd3cf5ac1 [2022-07-22 22:29:26,005 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:29:26,006 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i [2022-07-22 22:29:26,037 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a35f61d26/d36b67d471804505ba4bdb217347bf56/FLAGbd3cf5ac1 [2022-07-22 22:29:26,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a35f61d26/d36b67d471804505ba4bdb217347bf56 [2022-07-22 22:29:26,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:29:26,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:29:26,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:29:26,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:29:26,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:29:26,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:29:26" (1/1) ... [2022-07-22 22:29:26,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f03362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:26, skipping insertion in model container [2022-07-22 22:29:26,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:29:26" (1/1) ... [2022-07-22 22:29:26,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:29:26,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:29:26,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4505,4518] [2022-07-22 22:29:26,585 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-1.i[4565,4578] [2022-07-22 22:29:27,087 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:29:27,142 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,142 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,143 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,144 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,144 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,151 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,151 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,152 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,153 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,362 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:29:27,363 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:29:27,363 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:29:27,364 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:29:27,365 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:29:27,365 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:29:27,368 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:29:27,369 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:29:27,369 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:29:27,369 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:29:27,465 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,466 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:29:27,561 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:29:27,580 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-1.i[4505,4518] [2022-07-22 22:29:27,582 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-1.i[4565,4578] [2022-07-22 22:29:27,623 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:29:27,634 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,643 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,643 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,644 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,644 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,651 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,652 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,653 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,653 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,680 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:29:27,681 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:29:27,681 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:29:27,682 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:29:27,683 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:29:27,684 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:29:27,684 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:29:27,685 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:29:27,685 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:29:27,685 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:29:27,711 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,712 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:27,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:29:27,857 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:29:27,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:27 WrapperNode [2022-07-22 22:29:27,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:29:27,858 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:29:27,858 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:29:27,858 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:29:27,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:27" (1/1) ... [2022-07-22 22:29:27,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:27" (1/1) ... [2022-07-22 22:29:27,983 INFO L137 Inliner]: procedures = 689, calls = 1517, calls flagged for inlining = 52, calls inlined = 9, statements flattened = 742 [2022-07-22 22:29:27,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:29:27,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:29:27,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:29:27,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:29:27,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:27" (1/1) ... [2022-07-22 22:29:27,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:27" (1/1) ... [2022-07-22 22:29:27,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:27" (1/1) ... [2022-07-22 22:29:27,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:27" (1/1) ... [2022-07-22 22:29:28,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:27" (1/1) ... [2022-07-22 22:29:28,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:27" (1/1) ... [2022-07-22 22:29:28,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:27" (1/1) ... [2022-07-22 22:29:28,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:29:28,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:29:28,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:29:28,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:29:28,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:27" (1/1) ... [2022-07-22 22:29:28,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:29:28,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:29:28,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 22:29:28,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 22:29:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-07-22 22:29:28,093 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-07-22 22:29:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:29:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-22 22:29:28,094 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-22 22:29:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-22 22:29:28,094 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-22 22:29:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-22 22:29:28,095 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-22 22:29:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:29:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-22 22:29:28,096 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-22 22:29:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:29:28,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:29:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:29:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:29:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:29:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:29:28,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:29:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-22 22:29:28,098 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-22 22:29:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2022-07-22 22:29:28,098 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2022-07-22 22:29:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-22 22:29:28,098 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-22 22:29:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-22 22:29:28,099 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-22 22:29:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-07-22 22:29:28,099 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-07-22 22:29:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:29:28,100 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:29:28,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:29:28,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:29:28,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:29:28,100 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-22 22:29:28,100 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-22 22:29:28,100 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-22 22:29:28,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-22 22:29:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:29:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-07-22 22:29:28,101 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-07-22 22:29:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-07-22 22:29:28,101 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-07-22 22:29:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:29:28,319 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:29:28,320 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:29:28,897 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:29:28,902 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:29:28,903 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-22 22:29:28,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:29:28 BoogieIcfgContainer [2022-07-22 22:29:28,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:29:28,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:29:28,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:29:28,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:29:28,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:29:26" (1/3) ... [2022-07-22 22:29:28,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@288c8bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:29:28, skipping insertion in model container [2022-07-22 22:29:28,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:27" (2/3) ... [2022-07-22 22:29:28,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@288c8bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:29:28, skipping insertion in model container [2022-07-22 22:29:28,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:29:28" (3/3) ... [2022-07-22 22:29:28,910 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness-1.i [2022-07-22 22:29:28,919 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:29:28,919 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:29:28,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:29:28,955 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5f6265f5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@8f9191f [2022-07-22 22:29:28,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:29:28,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 133 states have (on average 1.255639097744361) internal successors, (167), 133 states have internal predecessors, (167), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-07-22 22:29:28,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 22:29:28,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:29:28,968 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1] [2022-07-22 22:29:28,969 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:29:28,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:29:28,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1293047729, now seen corresponding path program 1 times [2022-07-22 22:29:28,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:29:28,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187787034] [2022-07-22 22:29:28,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:29:28,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:29:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:29,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:29:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:29,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:29:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:29,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:29:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:29,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 22:29:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:29,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:29:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:29,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:29:29,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:29:29,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187787034] [2022-07-22 22:29:29,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-22 22:29:29,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934246999] [2022-07-22 22:29:29,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:29:29,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:29:29,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:29:29,413 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:29:29,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:29:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:29,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 2214 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 22:29:29,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:29:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-22 22:29:29,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:29:29,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934246999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:29:29,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:29:29,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 22:29:29,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913016132] [2022-07-22 22:29:29,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:29:29,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 22:29:29,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:29:29,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 22:29:29,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:29:29,832 INFO L87 Difference]: Start difference. First operand has 205 states, 133 states have (on average 1.255639097744361) internal successors, (167), 133 states have internal predecessors, (167), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 22:29:29,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:29:29,880 INFO L93 Difference]: Finished difference Result 401 states and 585 transitions. [2022-07-22 22:29:29,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 22:29:29,882 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 112 [2022-07-22 22:29:29,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:29:29,890 INFO L225 Difference]: With dead ends: 401 [2022-07-22 22:29:29,892 INFO L226 Difference]: Without dead ends: 198 [2022-07-22 22:29:29,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:29:29,903 INFO L413 NwaCegarLoop]: 271 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, 271 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:29:29,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:29:29,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-07-22 22:29:29,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-07-22 22:29:29,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 125 states have (on average 1.224) internal successors, (153), 127 states have internal predecessors, (153), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-07-22 22:29:29,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 263 transitions. [2022-07-22 22:29:29,962 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 263 transitions. Word has length 112 [2022-07-22 22:29:29,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:29:29,963 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 263 transitions. [2022-07-22 22:29:29,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 22:29:29,963 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 263 transitions. [2022-07-22 22:29:29,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 22:29:29,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:29:29,972 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:29:29,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 22:29:30,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-22 22:29:30,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:29:30,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:29:30,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1403140028, now seen corresponding path program 1 times [2022-07-22 22:29:30,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:29:30,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127272429] [2022-07-22 22:29:30,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:29:30,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:29:30,246 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:29:30,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [6255463] [2022-07-22 22:29:30,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:29:30,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:29:30,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:29:30,248 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:29:30,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:29:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:30,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 2368 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 22:29:30,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:29:30,679 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-07-22 22:29:30,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:29:30,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:29:30,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127272429] [2022-07-22 22:29:30,680 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:29:30,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6255463] [2022-07-22 22:29:30,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6255463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:29:30,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:29:30,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:29:30,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126502202] [2022-07-22 22:29:30,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:29:30,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:29:30,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:29:30,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:29:30,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:29:30,683 INFO L87 Difference]: Start difference. First operand 198 states and 263 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-22 22:29:30,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:29:30,719 INFO L93 Difference]: Finished difference Result 302 states and 404 transitions. [2022-07-22 22:29:30,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:29:30,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 146 [2022-07-22 22:29:30,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:29:30,723 INFO L225 Difference]: With dead ends: 302 [2022-07-22 22:29:30,723 INFO L226 Difference]: Without dead ends: 203 [2022-07-22 22:29:30,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:29:30,725 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 2 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:29:30,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1032 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:29:30,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-22 22:29:30,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-07-22 22:29:30,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 129 states have (on average 1.2170542635658914) internal successors, (157), 131 states have internal predecessors, (157), 56 states have call successors, (56), 16 states have call predecessors, (56), 17 states have return successors, (57), 55 states have call predecessors, (57), 54 states have call successors, (57) [2022-07-22 22:29:30,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 270 transitions. [2022-07-22 22:29:30,735 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 270 transitions. Word has length 146 [2022-07-22 22:29:30,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:29:30,736 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 270 transitions. [2022-07-22 22:29:30,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-22 22:29:30,736 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 270 transitions. [2022-07-22 22:29:30,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-22 22:29:30,738 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:29:30,738 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:29:30,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:29:30,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-22 22:29:30,958 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:29:30,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:29:30,958 INFO L85 PathProgramCache]: Analyzing trace with hash 494695836, now seen corresponding path program 1 times [2022-07-22 22:29:30,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:29:30,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794750026] [2022-07-22 22:29:30,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:29:30,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:29:31,022 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:29:31,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982428197] [2022-07-22 22:29:31,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:29:31,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:29:31,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:29:31,029 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:29:31,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:29:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:31,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 2388 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-22 22:29:31,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:29:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-07-22 22:29:31,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:29:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-07-22 22:29:31,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:29:31,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794750026] [2022-07-22 22:29:31,733 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:29:31,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982428197] [2022-07-22 22:29:31,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982428197] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 22:29:31,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:29:31,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2022-07-22 22:29:31,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224912491] [2022-07-22 22:29:31,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:29:31,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:29:31,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:29:31,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:29:31,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:29:31,735 INFO L87 Difference]: Start difference. First operand 203 states and 270 transitions. Second operand has 5 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-22 22:29:31,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:29:31,794 INFO L93 Difference]: Finished difference Result 211 states and 278 transitions. [2022-07-22 22:29:31,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:29:31,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 147 [2022-07-22 22:29:31,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:29:31,798 INFO L225 Difference]: With dead ends: 211 [2022-07-22 22:29:31,798 INFO L226 Difference]: Without dead ends: 209 [2022-07-22 22:29:31,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:29:31,801 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 4 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:29:31,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1029 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:29:31,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-07-22 22:29:31,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2022-07-22 22:29:31,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 132 states have (on average 1.2121212121212122) internal successors, (160), 135 states have internal predecessors, (160), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-22 22:29:31,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 275 transitions. [2022-07-22 22:29:31,828 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 275 transitions. Word has length 147 [2022-07-22 22:29:31,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:29:31,829 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 275 transitions. [2022-07-22 22:29:31,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-22 22:29:31,829 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 275 transitions. [2022-07-22 22:29:31,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-22 22:29:31,830 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:29:31,831 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:29:31,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:29:32,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:29:32,036 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:29:32,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:29:32,036 INFO L85 PathProgramCache]: Analyzing trace with hash 496542878, now seen corresponding path program 1 times [2022-07-22 22:29:32,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:29:32,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885947696] [2022-07-22 22:29:32,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:29:32,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:29:32,093 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:29:32,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307868809] [2022-07-22 22:29:32,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:29:32,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:29:32,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:29:32,095 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:29:32,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:29:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:32,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 2393 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 22:29:32,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:29:32,509 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-22 22:29:32,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:29:32,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:29:32,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885947696] [2022-07-22 22:29:32,510 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:29:32,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307868809] [2022-07-22 22:29:32,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307868809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:29:32,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:29:32,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:29:32,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525293692] [2022-07-22 22:29:32,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:29:32,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:29:32,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:29:32,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:29:32,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:29:32,511 INFO L87 Difference]: Start difference. First operand 208 states and 275 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-22 22:29:32,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:29:32,567 INFO L93 Difference]: Finished difference Result 401 states and 523 transitions. [2022-07-22 22:29:32,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:29:32,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 147 [2022-07-22 22:29:32,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:29:32,569 INFO L225 Difference]: With dead ends: 401 [2022-07-22 22:29:32,569 INFO L226 Difference]: Without dead ends: 208 [2022-07-22 22:29:32,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:29:32,570 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 13 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:29:32,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1257 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:29:32,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-22 22:29:32,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-07-22 22:29:32,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 132 states have (on average 1.2045454545454546) internal successors, (159), 135 states have internal predecessors, (159), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-22 22:29:32,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 274 transitions. [2022-07-22 22:29:32,598 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 274 transitions. Word has length 147 [2022-07-22 22:29:32,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:29:32,599 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 274 transitions. [2022-07-22 22:29:32,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-22 22:29:32,599 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 274 transitions. [2022-07-22 22:29:32,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-22 22:29:32,603 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:29:32,603 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:29:32,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 22:29:32,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:29:32,804 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:29:32,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:29:32,805 INFO L85 PathProgramCache]: Analyzing trace with hash -50417486, now seen corresponding path program 1 times [2022-07-22 22:29:32,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:29:32,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170469679] [2022-07-22 22:29:32,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:29:32,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:29:32,863 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:29:32,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866830683] [2022-07-22 22:29:32,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:29:32,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:29:32,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:29:32,869 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:29:32,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:29:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:33,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 22:29:33,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:29:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-07-22 22:29:33,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:29:33,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:29:33,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170469679] [2022-07-22 22:29:33,271 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:29:33,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866830683] [2022-07-22 22:29:33,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866830683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:29:33,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:29:33,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 22:29:33,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829353319] [2022-07-22 22:29:33,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:29:33,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 22:29:33,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:29:33,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 22:29:33,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:29:33,274 INFO L87 Difference]: Start difference. First operand 208 states and 274 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 22:29:33,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:29:33,291 INFO L93 Difference]: Finished difference Result 397 states and 520 transitions. [2022-07-22 22:29:33,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 22:29:33,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 149 [2022-07-22 22:29:33,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:29:33,294 INFO L225 Difference]: With dead ends: 397 [2022-07-22 22:29:33,294 INFO L226 Difference]: Without dead ends: 210 [2022-07-22 22:29:33,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:29:33,296 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 1 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:29:33,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 516 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:29:33,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-07-22 22:29:33,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2022-07-22 22:29:33,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 133 states have (on average 1.2030075187969924) internal successors, (160), 136 states have internal predecessors, (160), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-22 22:29:33,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 275 transitions. [2022-07-22 22:29:33,309 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 275 transitions. Word has length 149 [2022-07-22 22:29:33,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:29:33,309 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 275 transitions. [2022-07-22 22:29:33,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 22:29:33,310 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 275 transitions. [2022-07-22 22:29:33,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-22 22:29:33,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:29:33,311 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:29:33,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 22:29:33,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:29:33,515 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:29:33,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:29:33,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2024331122, now seen corresponding path program 1 times [2022-07-22 22:29:33,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:29:33,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926113357] [2022-07-22 22:29:33,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:29:33,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:29:33,556 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:29:33,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33919550] [2022-07-22 22:29:33,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:29:33,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:29:33,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:29:33,558 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:29:33,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:29:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:33,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 2445 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-22 22:29:33,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:29:34,057 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 159 proven. 1 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-22 22:29:34,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:29:34,342 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-07-22 22:29:34,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:29:34,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926113357] [2022-07-22 22:29:34,342 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:29:34,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33919550] [2022-07-22 22:29:34,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33919550] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:29:34,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:29:34,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-22 22:29:34,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731044993] [2022-07-22 22:29:34,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:29:34,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 22:29:34,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:29:34,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 22:29:34,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:29:34,344 INFO L87 Difference]: Start difference. First operand 209 states and 275 transitions. Second operand has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-22 22:29:34,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:29:34,453 INFO L93 Difference]: Finished difference Result 406 states and 527 transitions. [2022-07-22 22:29:34,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:29:34,454 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 153 [2022-07-22 22:29:34,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:29:34,455 INFO L225 Difference]: With dead ends: 406 [2022-07-22 22:29:34,455 INFO L226 Difference]: Without dead ends: 212 [2022-07-22 22:29:34,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:29:34,457 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 35 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:29:34,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1759 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:29:34,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-22 22:29:34,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2022-07-22 22:29:34,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 135 states have (on average 1.2) internal successors, (162), 138 states have internal predecessors, (162), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-22 22:29:34,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 277 transitions. [2022-07-22 22:29:34,463 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 277 transitions. Word has length 153 [2022-07-22 22:29:34,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:29:34,464 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 277 transitions. [2022-07-22 22:29:34,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-22 22:29:34,464 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 277 transitions. [2022-07-22 22:29:34,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-22 22:29:34,465 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:29:34,465 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:29:34,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 22:29:34,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:29:34,686 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:29:34,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:29:34,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1553173810, now seen corresponding path program 2 times [2022-07-22 22:29:34,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:29:34,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295765102] [2022-07-22 22:29:34,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:29:34,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:29:34,730 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:29:34,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424753054] [2022-07-22 22:29:34,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:29:34,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:29:34,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:29:34,731 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:29:34,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 22:29:35,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:29:35,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:29:35,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-22 22:29:35,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:29:35,421 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 167 proven. 4 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-22 22:29:35,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:29:35,739 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-07-22 22:29:35,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:29:35,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295765102] [2022-07-22 22:29:35,740 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:29:35,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424753054] [2022-07-22 22:29:35,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424753054] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:29:35,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:29:35,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-22 22:29:35,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784414388] [2022-07-22 22:29:35,741 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:29:35,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 22:29:35,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:29:35,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 22:29:35,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:29:35,742 INFO L87 Difference]: Start difference. First operand 211 states and 277 transitions. Second operand has 15 states, 13 states have (on average 7.076923076923077) internal successors, (92), 15 states have internal predecessors, (92), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-22 22:29:35,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:29:35,873 INFO L93 Difference]: Finished difference Result 410 states and 531 transitions. [2022-07-22 22:29:35,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:29:35,874 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.076923076923077) internal successors, (92), 15 states have internal predecessors, (92), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 157 [2022-07-22 22:29:35,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:29:35,875 INFO L225 Difference]: With dead ends: 410 [2022-07-22 22:29:35,875 INFO L226 Difference]: Without dead ends: 214 [2022-07-22 22:29:35,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 298 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:29:35,877 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 29 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:29:35,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2010 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:29:35,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-07-22 22:29:35,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 213. [2022-07-22 22:29:35,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 137 states have (on average 1.197080291970803) internal successors, (164), 140 states have internal predecessors, (164), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-22 22:29:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 279 transitions. [2022-07-22 22:29:35,884 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 279 transitions. Word has length 157 [2022-07-22 22:29:35,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:29:35,884 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 279 transitions. [2022-07-22 22:29:35,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.076923076923077) internal successors, (92), 15 states have internal predecessors, (92), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-22 22:29:35,885 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 279 transitions. [2022-07-22 22:29:35,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-22 22:29:35,886 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:29:35,886 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:29:35,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 22:29:36,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:29:36,109 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:29:36,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:29:36,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1663013362, now seen corresponding path program 3 times [2022-07-22 22:29:36,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:29:36,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415651765] [2022-07-22 22:29:36,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:29:36,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:29:36,181 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:29:36,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1426831025] [2022-07-22 22:29:36,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 22:29:36,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:29:36,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:29:36,204 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:29:36,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 22:29:37,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-22 22:29:37,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:29:37,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 2109 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-22 22:29:37,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:29:37,952 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 49 proven. 9 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-07-22 22:29:37,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:29:38,295 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-07-22 22:29:38,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:29:38,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415651765] [2022-07-22 22:29:38,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:29:38,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426831025] [2022-07-22 22:29:38,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426831025] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:29:38,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:29:38,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-22 22:29:38,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183795876] [2022-07-22 22:29:38,297 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:29:38,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 22:29:38,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:29:38,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 22:29:38,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:29:38,299 INFO L87 Difference]: Start difference. First operand 213 states and 279 transitions. Second operand has 17 states, 15 states have (on average 5.533333333333333) internal successors, (83), 17 states have internal predecessors, (83), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-07-22 22:29:38,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:29:38,469 INFO L93 Difference]: Finished difference Result 414 states and 535 transitions. [2022-07-22 22:29:38,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 22:29:38,470 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.533333333333333) internal successors, (83), 17 states have internal predecessors, (83), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 161 [2022-07-22 22:29:38,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:29:38,471 INFO L225 Difference]: With dead ends: 414 [2022-07-22 22:29:38,471 INFO L226 Difference]: Without dead ends: 216 [2022-07-22 22:29:38,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 304 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:29:38,472 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 37 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:29:38,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2513 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:29:38,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-22 22:29:38,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2022-07-22 22:29:38,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 139 states have (on average 1.1942446043165467) internal successors, (166), 142 states have internal predecessors, (166), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-22 22:29:38,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 281 transitions. [2022-07-22 22:29:38,479 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 281 transitions. Word has length 161 [2022-07-22 22:29:38,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:29:38,479 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 281 transitions. [2022-07-22 22:29:38,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.533333333333333) internal successors, (83), 17 states have internal predecessors, (83), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-07-22 22:29:38,480 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 281 transitions. [2022-07-22 22:29:38,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-22 22:29:38,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:29:38,481 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 8, 8, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:29:38,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-22 22:29:38,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-22 22:29:38,696 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:29:38,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:29:38,696 INFO L85 PathProgramCache]: Analyzing trace with hash -650271310, now seen corresponding path program 4 times [2022-07-22 22:29:38,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:29:38,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195587310] [2022-07-22 22:29:38,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:29:38,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:29:38,741 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:29:38,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143294375] [2022-07-22 22:29:38,741 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 22:29:38,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:29:38,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:29:38,743 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:29:38,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 22:29:39,313 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 22:29:39,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:29:39,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 2559 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-22 22:29:39,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:29:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 195 proven. 16 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-22 22:29:39,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:29:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-07-22 22:29:39,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:29:39,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195587310] [2022-07-22 22:29:39,769 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:29:39,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143294375] [2022-07-22 22:29:39,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143294375] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:29:39,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:29:39,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-07-22 22:29:39,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136132887] [2022-07-22 22:29:39,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:29:39,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:29:39,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:29:39,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:29:39,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:29:39,772 INFO L87 Difference]: Start difference. First operand 215 states and 281 transitions. Second operand has 19 states, 17 states have (on average 5.882352941176471) internal successors, (100), 19 states have internal predecessors, (100), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-22 22:29:40,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:29:40,007 INFO L93 Difference]: Finished difference Result 418 states and 539 transitions. [2022-07-22 22:29:40,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 22:29:40,008 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.882352941176471) internal successors, (100), 19 states have internal predecessors, (100), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 165 [2022-07-22 22:29:40,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:29:40,009 INFO L225 Difference]: With dead ends: 418 [2022-07-22 22:29:40,009 INFO L226 Difference]: Without dead ends: 218 [2022-07-22 22:29:40,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 310 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:29:40,012 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 38 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3266 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:29:40,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3266 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:29:40,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-07-22 22:29:40,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2022-07-22 22:29:40,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 141 states have (on average 1.1914893617021276) internal successors, (168), 144 states have internal predecessors, (168), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-22 22:29:40,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 283 transitions. [2022-07-22 22:29:40,021 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 283 transitions. Word has length 165 [2022-07-22 22:29:40,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:29:40,021 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 283 transitions. [2022-07-22 22:29:40,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.882352941176471) internal successors, (100), 19 states have internal predecessors, (100), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-22 22:29:40,022 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 283 transitions. [2022-07-22 22:29:40,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-22 22:29:40,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:29:40,023 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:29:40,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 22:29:40,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:29:40,241 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:29:40,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:29:40,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1517193330, now seen corresponding path program 5 times [2022-07-22 22:29:40,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:29:40,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379543209] [2022-07-22 22:29:40,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:29:40,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:29:40,290 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:29:40,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1614514748] [2022-07-22 22:29:40,291 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 22:29:40,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:29:40,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:29:40,292 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:29:40,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 22:29:41,216 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-07-22 22:29:41,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:29:41,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-22 22:29:41,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:29:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 215 proven. 25 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-22 22:29:41,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:29:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-07-22 22:29:41,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:29:41,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379543209] [2022-07-22 22:29:41,808 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:29:41,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614514748] [2022-07-22 22:29:41,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614514748] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:29:41,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:29:41,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-07-22 22:29:41,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055245687] [2022-07-22 22:29:41,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:29:41,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:29:41,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:29:41,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:29:41,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:29:41,811 INFO L87 Difference]: Start difference. First operand 217 states and 283 transitions. Second operand has 21 states, 19 states have (on average 5.473684210526316) internal successors, (104), 21 states have internal predecessors, (104), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-22 22:29:42,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:29:42,045 INFO L93 Difference]: Finished difference Result 422 states and 543 transitions. [2022-07-22 22:29:42,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 22:29:42,046 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.473684210526316) internal successors, (104), 21 states have internal predecessors, (104), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 169 [2022-07-22 22:29:42,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:29:42,049 INFO L225 Difference]: With dead ends: 422 [2022-07-22 22:29:42,049 INFO L226 Difference]: Without dead ends: 220 [2022-07-22 22:29:42,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 316 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-07-22 22:29:42,050 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 41 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3265 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:29:42,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3265 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:29:42,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-07-22 22:29:42,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2022-07-22 22:29:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 143 states have (on average 1.1888111888111887) internal successors, (170), 146 states have internal predecessors, (170), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-22 22:29:42,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 285 transitions. [2022-07-22 22:29:42,058 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 285 transitions. Word has length 169 [2022-07-22 22:29:42,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:29:42,059 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 285 transitions. [2022-07-22 22:29:42,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.473684210526316) internal successors, (104), 21 states have internal predecessors, (104), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-22 22:29:42,059 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 285 transitions. [2022-07-22 22:29:42,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-22 22:29:42,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:29:42,061 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:29:42,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 22:29:42,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 22:29:42,269 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:29:42,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:29:42,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1933379022, now seen corresponding path program 6 times [2022-07-22 22:29:42,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:29:42,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185386632] [2022-07-22 22:29:42,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:29:42,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:29:42,331 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:29:42,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918809783] [2022-07-22 22:29:42,333 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-22 22:29:42,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:29:42,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:29:42,334 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:29:42,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process