./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_dynamic_harness.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 ../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_dynamic_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:57:58,321 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:57:58,404 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:57:58,411 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:57:58,411 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:57:58,439 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:57:58,442 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:57:58,443 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:57:58,444 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:57:58,444 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:57:58,445 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:57:58,445 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:57:58,446 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:57:58,446 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:57:58,446 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:57:58,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:57:58,447 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:57:58,447 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:57:58,448 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:57:58,448 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:57:58,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:57:58,449 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:57:58,449 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:57:58,449 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:57:58,450 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:57:58,450 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:57:58,450 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:57:58,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:57:58,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:57:58,451 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:57:58,452 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:57:58,452 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:57:58,452 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:57:58,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:57:58,453 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:57:58,453 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:57:58,453 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:57:58,453 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:57:58,454 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:57:58,454 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:57:58,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:57:58,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:57:58,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:57:58,764 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:57:58,765 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:57:58,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2023-11-23 08:57:59,935 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:58:00,397 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:58:00,398 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2023-11-23 08:58:00,442 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5138c2de/7f06b2639d9e42379d50ce13182fbf9d/FLAGb255e0ff5 [2023-11-23 08:58:00,459 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5138c2de/7f06b2639d9e42379d50ce13182fbf9d [2023-11-23 08:58:00,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:58:00,465 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:58:00,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:58:00,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:58:00,472 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:58:00,472 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:58:00" (1/1) ... [2023-11-23 08:58:00,473 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ca2ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:00, skipping insertion in model container [2023-11-23 08:58:00,473 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:58:00" (1/1) ... [2023-11-23 08:58:00,579 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:58:00,811 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4505,4518] [2023-11-23 08:58:00,820 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4565,4578] [2023-11-23 08:58:01,582 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:01,582 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:01,583 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:01,583 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:01,584 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:01,592 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:01,593 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:01,594 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:01,594 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:01,844 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:58:01,845 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:58:01,846 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:58:01,847 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:58:01,851 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:58:01,852 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:58:01,852 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:58:01,853 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:58:01,853 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:58:01,854 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:58:01,963 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:01,964 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:58:02,056 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:58:02,077 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4505,4518] [2023-11-23 08:58:02,078 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4565,4578] [2023-11-23 08:58:02,151 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,151 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,152 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,167 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,168 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,177 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,177 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,178 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,179 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,223 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:58:02,224 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:58:02,224 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:58:02,225 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:58:02,227 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:58:02,228 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:58:02,230 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:58:02,230 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:58:02,231 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:58:02,231 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:58:02,281 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,281 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:02,291 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7703-7714] [2023-11-23 08:58:02,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:58:02,529 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:02,529 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:02,529 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:02,529 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:02,529 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:02,530 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:02,530 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:02,530 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:02,530 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:02,530 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:02,530 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:02,530 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:02,530 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:02,530 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:02,530 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:02,537 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:58:02,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02 WrapperNode [2023-11-23 08:58:02,538 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:58:02,539 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:58:02,541 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:58:02,541 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:58:02,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ... [2023-11-23 08:58:02,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ... [2023-11-23 08:58:02,696 INFO L138 Inliner]: procedures = 688, calls = 1515, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 734 [2023-11-23 08:58:02,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:58:02,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:58:02,705 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:58:02,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:58:02,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ... [2023-11-23 08:58:02,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ... [2023-11-23 08:58:02,731 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ... [2023-11-23 08:58:02,732 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ... [2023-11-23 08:58:02,776 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ... [2023-11-23 08:58:02,790 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ... [2023-11-23 08:58:02,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ... [2023-11-23 08:58:02,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ... [2023-11-23 08:58:02,831 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:58:02,832 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:58:02,832 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:58:02,832 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:58:02,833 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ... [2023-11-23 08:58:02,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:58:02,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:02,874 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) [2023-11-23 08:58:02,905 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 [2023-11-23 08:58:02,932 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 08:58:02,932 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 08:58:02,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:58:02,933 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 08:58:02,933 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 08:58:02,933 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:58:02,934 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:58:02,934 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-23 08:58:02,934 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-23 08:58:02,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:58:02,935 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 08:58:02,935 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 08:58:02,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:58:02,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:58:02,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:58:02,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:58:02,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:58:02,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:58:02,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:58:02,937 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:58:02,937 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:58:02,937 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 08:58:02,937 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 08:58:02,938 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 08:58:02,938 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 08:58:02,938 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-23 08:58:02,938 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-23 08:58:02,938 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:58:02,938 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:58:02,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:58:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:58:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:58:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 08:58:02,940 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 08:58:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 08:58:02,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 08:58:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:58:02,941 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-23 08:58:02,941 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-23 08:58:02,941 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-23 08:58:02,941 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-23 08:58:02,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:58:03,248 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:58:03,251 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:58:04,107 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:58:04,233 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:58:04,233 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-23 08:58:04,234 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:58:04 BoogieIcfgContainer [2023-11-23 08:58:04,234 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:58:04,237 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:58:04,237 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:58:04,241 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:58:04,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:58:00" (1/3) ... [2023-11-23 08:58:04,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2535dde3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:58:04, skipping insertion in model container [2023-11-23 08:58:04,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (2/3) ... [2023-11-23 08:58:04,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2535dde3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:58:04, skipping insertion in model container [2023-11-23 08:58:04,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:58:04" (3/3) ... [2023-11-23 08:58:04,245 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness.i [2023-11-23 08:58:04,263 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:58:04,263 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:58:04,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:58:04,340 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=LoopHeads, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@44c19818, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:58:04,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:58:04,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 111 states have (on average 1.3063063063063063) internal successors, (145), 111 states have internal predecessors, (145), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-11-23 08:58:04,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-23 08:58:04,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:04,364 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-11-23 08:58:04,364 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:04,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:04,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1102596533, now seen corresponding path program 1 times [2023-11-23 08:58:04,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:04,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680081020] [2023-11-23 08:58:04,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:04,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:04,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:04,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680081020] [2023-11-23 08:58:04,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 08:58:04,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566528727] [2023-11-23 08:58:04,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:04,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:04,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:04,857 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) [2023-11-23 08:58:04,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 08:58:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:05,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 2192 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 08:58:05,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-23 08:58:05,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:58:05,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566528727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:58:05,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:58:05,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 08:58:05,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602120995] [2023-11-23 08:58:05,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:58:05,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 08:58:05,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:05,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 08:58:05,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 08:58:05,475 INFO L87 Difference]: Start difference. First operand has 179 states, 111 states have (on average 1.3063063063063063) internal successors, (145), 111 states have internal predecessors, (145), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:58:05,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:05,648 INFO L93 Difference]: Finished difference Result 354 states and 536 transitions. [2023-11-23 08:58:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 08:58:05,652 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 92 [2023-11-23 08:58:05,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:05,663 INFO L225 Difference]: With dead ends: 354 [2023-11-23 08:58:05,668 INFO L226 Difference]: Without dead ends: 175 [2023-11-23 08:58:05,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 08:58:05,678 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:05,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 227 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:58:05,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-23 08:58:05,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2023-11-23 08:58:05,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 106 states have (on average 1.2641509433962264) internal successors, (134), 108 states have internal predecessors, (134), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-23 08:58:05,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 238 transitions. [2023-11-23 08:58:05,765 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 238 transitions. Word has length 92 [2023-11-23 08:58:05,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:05,767 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 238 transitions. [2023-11-23 08:58:05,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:58:05,768 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 238 transitions. [2023-11-23 08:58:05,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 08:58:05,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:05,776 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2023-11-23 08:58:05,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 08:58:05,981 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 [2023-11-23 08:58:05,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:05,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:05,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1442738450, now seen corresponding path program 1 times [2023-11-23 08:58:05,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:05,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146785614] [2023-11-23 08:58:05,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:05,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:06,086 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:06,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972552114] [2023-11-23 08:58:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:06,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:06,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:06,088 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) [2023-11-23 08:58:06,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 08:58:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:06,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 2342 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 08:58:06,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:06,724 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-11-23 08:58:06,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:06,887 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-23 08:58:06,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:06,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146785614] [2023-11-23 08:58:06,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:06,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972552114] [2023-11-23 08:58:06,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972552114] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 08:58:06,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:58:06,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-11-23 08:58:06,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124441846] [2023-11-23 08:58:06,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:58:06,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:58:06,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:06,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:58:06,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:58:06,891 INFO L87 Difference]: Start difference. First operand 175 states and 238 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 08:58:07,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:07,195 INFO L93 Difference]: Finished difference Result 183 states and 246 transitions. [2023-11-23 08:58:07,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:58:07,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 122 [2023-11-23 08:58:07,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:07,198 INFO L225 Difference]: With dead ends: 183 [2023-11-23 08:58:07,198 INFO L226 Difference]: Without dead ends: 181 [2023-11-23 08:58:07,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:58:07,199 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 6 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:07,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 861 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:58:07,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-23 08:58:07,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2023-11-23 08:58:07,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 109 states have (on average 1.2568807339449541) internal successors, (137), 112 states have internal predecessors, (137), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-23 08:58:07,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 243 transitions. [2023-11-23 08:58:07,223 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 243 transitions. Word has length 122 [2023-11-23 08:58:07,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:07,223 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 243 transitions. [2023-11-23 08:58:07,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 08:58:07,224 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 243 transitions. [2023-11-23 08:58:07,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 08:58:07,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:07,226 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2023-11-23 08:58:07,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 08:58:07,442 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 [2023-11-23 08:58:07,443 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:07,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:07,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1444585492, now seen corresponding path program 1 times [2023-11-23 08:58:07,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:07,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156252834] [2023-11-23 08:58:07,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:07,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:07,522 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:07,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738806898] [2023-11-23 08:58:07,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:07,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:07,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:07,527 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) [2023-11-23 08:58:07,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 08:58:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:07,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 2347 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 08:58:07,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 08:58:08,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:58:08,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:08,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156252834] [2023-11-23 08:58:08,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:08,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738806898] [2023-11-23 08:58:08,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738806898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:58:08,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:58:08,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:58:08,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319839396] [2023-11-23 08:58:08,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:58:08,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:58:08,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:08,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:58:08,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:58:08,048 INFO L87 Difference]: Start difference. First operand 180 states and 243 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-23 08:58:08,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:08,436 INFO L93 Difference]: Finished difference Result 348 states and 465 transitions. [2023-11-23 08:58:08,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:58:08,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 122 [2023-11-23 08:58:08,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:08,442 INFO L225 Difference]: With dead ends: 348 [2023-11-23 08:58:08,442 INFO L226 Difference]: Without dead ends: 180 [2023-11-23 08:58:08,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:58:08,444 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 9 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:08,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1072 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:58:08,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-23 08:58:08,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2023-11-23 08:58:08,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 112 states have internal predecessors, (136), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-23 08:58:08,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 242 transitions. [2023-11-23 08:58:08,457 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 242 transitions. Word has length 122 [2023-11-23 08:58:08,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:08,458 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 242 transitions. [2023-11-23 08:58:08,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-23 08:58:08,458 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 242 transitions. [2023-11-23 08:58:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-23 08:58:08,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:08,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:58:08,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-23 08:58:08,676 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 [2023-11-23 08:58:08,677 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:08,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:08,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1756286460, now seen corresponding path program 1 times [2023-11-23 08:58:08,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:08,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62619255] [2023-11-23 08:58:08,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:08,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:08,766 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:08,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1306406363] [2023-11-23 08:58:08,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:08,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:08,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:08,768 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) [2023-11-23 08:58:08,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 08:58:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:09,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 2363 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 08:58:09,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-11-23 08:58:09,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:58:09,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:09,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62619255] [2023-11-23 08:58:09,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:09,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306406363] [2023-11-23 08:58:09,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306406363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:58:09,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:58:09,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:58:09,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380801249] [2023-11-23 08:58:09,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:58:09,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:58:09,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:09,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:58:09,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:58:09,271 INFO L87 Difference]: Start difference. First operand 180 states and 242 transitions. Second operand has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-23 08:58:09,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:09,491 INFO L93 Difference]: Finished difference Result 345 states and 463 transitions. [2023-11-23 08:58:09,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:58:09,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 126 [2023-11-23 08:58:09,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:09,493 INFO L225 Difference]: With dead ends: 345 [2023-11-23 08:58:09,493 INFO L226 Difference]: Without dead ends: 181 [2023-11-23 08:58:09,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:58:09,495 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 6 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:09,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 857 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:58:09,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-23 08:58:09,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-11-23 08:58:09,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 110 states have (on average 1.2454545454545454) internal successors, (137), 113 states have internal predecessors, (137), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-23 08:58:09,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 243 transitions. [2023-11-23 08:58:09,506 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 243 transitions. Word has length 126 [2023-11-23 08:58:09,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:09,506 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 243 transitions. [2023-11-23 08:58:09,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-23 08:58:09,507 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 243 transitions. [2023-11-23 08:58:09,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-23 08:58:09,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:09,509 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:58:09,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 08:58:09,720 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 [2023-11-23 08:58:09,720 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:09,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:09,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1175291726, now seen corresponding path program 1 times [2023-11-23 08:58:09,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:09,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922966384] [2023-11-23 08:58:09,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:09,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:09,783 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:09,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203363334] [2023-11-23 08:58:09,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:09,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:09,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:09,785 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) [2023-11-23 08:58:09,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 08:58:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:10,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 2401 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 08:58:10,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 149 proven. 1 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-11-23 08:58:10,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-11-23 08:58:10,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:10,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922966384] [2023-11-23 08:58:10,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:10,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203363334] [2023-11-23 08:58:10,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203363334] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:10,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:10,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-23 08:58:10,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132618505] [2023-11-23 08:58:10,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:10,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 08:58:10,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:10,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 08:58:10,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:58:10,630 INFO L87 Difference]: Start difference. First operand 181 states and 243 transitions. Second operand has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 13 states have internal predecessors, (67), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:58:11,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:11,375 INFO L93 Difference]: Finished difference Result 352 states and 468 transitions. [2023-11-23 08:58:11,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:58:11,376 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 13 states have internal predecessors, (67), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 128 [2023-11-23 08:58:11,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:11,378 INFO L225 Difference]: With dead ends: 352 [2023-11-23 08:58:11,378 INFO L226 Difference]: Without dead ends: 182 [2023-11-23 08:58:11,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:58:11,379 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 16 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:11,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1497 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 08:58:11,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-23 08:58:11,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-11-23 08:58:11,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 111 states have (on average 1.2432432432432432) internal successors, (138), 114 states have internal predecessors, (138), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-23 08:58:11,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 244 transitions. [2023-11-23 08:58:11,390 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 244 transitions. Word has length 128 [2023-11-23 08:58:11,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:11,390 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 244 transitions. [2023-11-23 08:58:11,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 13 states have internal predecessors, (67), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:58:11,391 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 244 transitions. [2023-11-23 08:58:11,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-23 08:58:11,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:11,393 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 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] [2023-11-23 08:58:11,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 08:58:11,610 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 [2023-11-23 08:58:11,610 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:11,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:11,611 INFO L85 PathProgramCache]: Analyzing trace with hash 199447684, now seen corresponding path program 2 times [2023-11-23 08:58:11,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:11,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7820682] [2023-11-23 08:58:11,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:11,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:11,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:11,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471053688] [2023-11-23 08:58:11,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:58:11,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:11,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:11,680 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) [2023-11-23 08:58:11,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 08:58:12,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:58:12,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:58:12,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 2439 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 08:58:12,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 154 proven. 3 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-23 08:58:12,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:12,922 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-23 08:58:12,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:12,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7820682] [2023-11-23 08:58:12,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:12,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471053688] [2023-11-23 08:58:12,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471053688] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:12,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:12,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-23 08:58:12,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69781183] [2023-11-23 08:58:12,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:12,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 08:58:12,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:12,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 08:58:12,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:58:12,926 INFO L87 Difference]: Start difference. First operand 182 states and 244 transitions. Second operand has 15 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 15 states have internal predecessors, (69), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:58:13,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:13,453 INFO L93 Difference]: Finished difference Result 354 states and 470 transitions. [2023-11-23 08:58:13,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:58:13,454 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 15 states have internal predecessors, (69), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 130 [2023-11-23 08:58:13,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:13,455 INFO L225 Difference]: With dead ends: 354 [2023-11-23 08:58:13,456 INFO L226 Difference]: Without dead ends: 183 [2023-11-23 08:58:13,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-11-23 08:58:13,457 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 11 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:13,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2138 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:58:13,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-23 08:58:13,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-11-23 08:58:13,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 112 states have (on average 1.2410714285714286) internal successors, (139), 115 states have internal predecessors, (139), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-23 08:58:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 245 transitions. [2023-11-23 08:58:13,467 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 245 transitions. Word has length 130 [2023-11-23 08:58:13,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:13,467 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 245 transitions. [2023-11-23 08:58:13,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 15 states have internal predecessors, (69), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:58:13,468 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 245 transitions. [2023-11-23 08:58:13,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-23 08:58:13,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:13,471 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 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] [2023-11-23 08:58:13,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 08:58:13,688 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 [2023-11-23 08:58:13,688 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:13,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:13,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2044024654, now seen corresponding path program 3 times [2023-11-23 08:58:13,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:13,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570256202] [2023-11-23 08:58:13,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:13,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:13,749 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:13,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938819492] [2023-11-23 08:58:13,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:58:13,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:13,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:13,751 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) [2023-11-23 08:58:13,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 08:58:14,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 08:58:14,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:58:14,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 2060 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-23 08:58:14,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:15,094 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-11-23 08:58:15,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:15,433 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2023-11-23 08:58:15,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:15,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570256202] [2023-11-23 08:58:15,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:15,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938819492] [2023-11-23 08:58:15,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938819492] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:15,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:15,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-11-23 08:58:15,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219420464] [2023-11-23 08:58:15,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:15,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 08:58:15,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:15,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 08:58:15,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:58:15,463 INFO L87 Difference]: Start difference. First operand 183 states and 245 transitions. Second operand has 17 states, 15 states have (on average 4.0) internal successors, (60), 17 states have internal predecessors, (60), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:58:16,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:16,615 INFO L93 Difference]: Finished difference Result 356 states and 472 transitions. [2023-11-23 08:58:16,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 08:58:16,616 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.0) internal successors, (60), 17 states have internal predecessors, (60), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 132 [2023-11-23 08:58:16,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:16,617 INFO L225 Difference]: With dead ends: 356 [2023-11-23 08:58:16,618 INFO L226 Difference]: Without dead ends: 184 [2023-11-23 08:58:16,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2023-11-23 08:58:16,619 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 16 mSDsluCounter, 2132 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:16,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2349 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 08:58:16,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-23 08:58:16,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2023-11-23 08:58:16,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 113 states have (on average 1.238938053097345) internal successors, (140), 116 states have internal predecessors, (140), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-23 08:58:16,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 246 transitions. [2023-11-23 08:58:16,628 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 246 transitions. Word has length 132 [2023-11-23 08:58:16,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:16,629 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 246 transitions. [2023-11-23 08:58:16,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.0) internal successors, (60), 17 states have internal predecessors, (60), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:58:16,629 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 246 transitions. [2023-11-23 08:58:16,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-23 08:58:16,631 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:16,631 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 8, 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] [2023-11-23 08:58:16,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 08:58:16,844 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 [2023-11-23 08:58:16,845 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:16,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:16,845 INFO L85 PathProgramCache]: Analyzing trace with hash 944539396, now seen corresponding path program 4 times [2023-11-23 08:58:16,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:16,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189280318] [2023-11-23 08:58:16,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:16,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:16,950 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:16,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207008058] [2023-11-23 08:58:16,951 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 08:58:16,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:16,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:16,952 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) [2023-11-23 08:58:16,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 08:58:17,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 08:58:17,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:58:17,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 08:58:17,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 170 proven. 10 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-23 08:58:17,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:18,141 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2023-11-23 08:58:18,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:18,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189280318] [2023-11-23 08:58:18,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:18,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207008058] [2023-11-23 08:58:18,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207008058] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:18,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:18,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-11-23 08:58:18,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386195060] [2023-11-23 08:58:18,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:18,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-23 08:58:18,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:18,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-23 08:58:18,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:58:18,145 INFO L87 Difference]: Start difference. First operand 184 states and 246 transitions. Second operand has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 19 states have internal predecessors, (73), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:58:19,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:19,159 INFO L93 Difference]: Finished difference Result 358 states and 474 transitions. [2023-11-23 08:58:19,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 08:58:19,159 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 19 states have internal predecessors, (73), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 134 [2023-11-23 08:58:19,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:19,161 INFO L225 Difference]: With dead ends: 358 [2023-11-23 08:58:19,161 INFO L226 Difference]: Without dead ends: 185 [2023-11-23 08:58:19,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2023-11-23 08:58:19,163 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 15 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:19,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2564 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 08:58:19,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-23 08:58:19,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2023-11-23 08:58:19,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 114 states have (on average 1.236842105263158) internal successors, (141), 117 states have internal predecessors, (141), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-23 08:58:19,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 247 transitions. [2023-11-23 08:58:19,172 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 247 transitions. Word has length 134 [2023-11-23 08:58:19,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:19,172 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 247 transitions. [2023-11-23 08:58:19,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 19 states have internal predecessors, (73), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:58:19,173 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 247 transitions. [2023-11-23 08:58:19,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-23 08:58:19,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:19,174 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 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] [2023-11-23 08:58:19,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 08:58:19,392 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 [2023-11-23 08:58:19,392 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:19,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:19,393 INFO L85 PathProgramCache]: Analyzing trace with hash -804071602, now seen corresponding path program 5 times [2023-11-23 08:58:19,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:19,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733227755] [2023-11-23 08:58:19,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:19,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:19,456 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:19,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247056020] [2023-11-23 08:58:19,457 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-23 08:58:19,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:19,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:19,459 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) [2023-11-23 08:58:19,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 08:58:19,961 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-11-23 08:58:19,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:58:19,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 08:58:19,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:20,106 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 181 proven. 15 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-11-23 08:58:20,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-11-23 08:58:20,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:20,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733227755] [2023-11-23 08:58:20,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:20,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247056020] [2023-11-23 08:58:20,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247056020] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:20,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:20,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2023-11-23 08:58:20,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204599104] [2023-11-23 08:58:20,457 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:20,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-23 08:58:20,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:20,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-23 08:58:20,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-11-23 08:58:20,459 INFO L87 Difference]: Start difference. First operand 185 states and 247 transitions. Second operand has 21 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 21 states have internal predecessors, (75), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:58:21,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:21,504 INFO L93 Difference]: Finished difference Result 360 states and 476 transitions. [2023-11-23 08:58:21,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:58:21,504 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 21 states have internal predecessors, (75), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 136 [2023-11-23 08:58:21,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:21,506 INFO L225 Difference]: With dead ends: 360 [2023-11-23 08:58:21,506 INFO L226 Difference]: Without dead ends: 186 [2023-11-23 08:58:21,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-11-23 08:58:21,508 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 12 mSDsluCounter, 2559 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:21,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2776 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 08:58:21,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-11-23 08:58:21,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-11-23 08:58:21,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 118 states have internal predecessors, (142), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-23 08:58:21,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 248 transitions. [2023-11-23 08:58:21,522 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 248 transitions. Word has length 136 [2023-11-23 08:58:21,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:21,522 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 248 transitions. [2023-11-23 08:58:21,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 21 states have internal predecessors, (75), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:58:21,523 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 248 transitions. [2023-11-23 08:58:21,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-23 08:58:21,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:21,524 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 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] [2023-11-23 08:58:21,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 08:58:21,740 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 [2023-11-23 08:58:21,740 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:21,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:21,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1085327748, now seen corresponding path program 6 times [2023-11-23 08:58:21,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:21,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804294541] [2023-11-23 08:58:21,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:21,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:21,826 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:21,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813288389] [2023-11-23 08:58:21,827 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-23 08:58:21,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:21,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:21,828 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) [2023-11-23 08:58:21,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 08:58:23,682 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-11-23 08:58:23,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:58:23,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 2215 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 08:58:23,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:23,837 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 64 proven. 21 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2023-11-23 08:58:23,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:24,249 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2023-11-23 08:58:24,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:24,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804294541] [2023-11-23 08:58:24,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:24,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813288389] [2023-11-23 08:58:24,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813288389] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:24,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:24,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2023-11-23 08:58:24,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095630215] [2023-11-23 08:58:24,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:24,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 08:58:24,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:24,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 08:58:24,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2023-11-23 08:58:24,253 INFO L87 Difference]: Start difference. First operand 186 states and 248 transitions. Second operand has 23 states, 21 states have (on average 3.142857142857143) internal successors, (66), 23 states have internal predecessors, (66), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:58:25,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:25,420 INFO L93 Difference]: Finished difference Result 362 states and 478 transitions. [2023-11-23 08:58:25,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 08:58:25,421 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.142857142857143) internal successors, (66), 23 states have internal predecessors, (66), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 138 [2023-11-23 08:58:25,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:25,422 INFO L225 Difference]: With dead ends: 362 [2023-11-23 08:58:25,422 INFO L226 Difference]: Without dead ends: 187 [2023-11-23 08:58:25,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2023-11-23 08:58:25,424 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 11 mSDsluCounter, 2772 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2989 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:25,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2989 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 08:58:25,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-23 08:58:25,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2023-11-23 08:58:25,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 116 states have (on average 1.2327586206896552) internal successors, (143), 119 states have internal predecessors, (143), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-23 08:58:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 249 transitions. [2023-11-23 08:58:25,437 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 249 transitions. Word has length 138 [2023-11-23 08:58:25,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:25,438 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 249 transitions. [2023-11-23 08:58:25,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.142857142857143) internal successors, (66), 23 states have internal predecessors, (66), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:58:25,438 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 249 transitions. [2023-11-23 08:58:25,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-23 08:58:25,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:25,441 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 12, 12, 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] [2023-11-23 08:58:25,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 08:58:25,654 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 [2023-11-23 08:58:25,654 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:25,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:25,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1975650126, now seen corresponding path program 7 times [2023-11-23 08:58:25,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:25,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899400582] [2023-11-23 08:58:25,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:25,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:25,753 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:25,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096165303] [2023-11-23 08:58:25,754 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-23 08:58:25,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:25,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:25,755 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) [2023-11-23 08:58:25,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 08:58:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:26,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 2629 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 08:58:26,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:26,738 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 209 proven. 28 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-11-23 08:58:26,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-11-23 08:58:27,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:27,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899400582] [2023-11-23 08:58:27,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:27,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096165303] [2023-11-23 08:58:27,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096165303] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:27,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:27,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2023-11-23 08:58:27,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464637709] [2023-11-23 08:58:27,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:27,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-23 08:58:27,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:27,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-23 08:58:27,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2023-11-23 08:58:27,188 INFO L87 Difference]: Start difference. First operand 187 states and 249 transitions. Second operand has 25 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 25 states have internal predecessors, (79), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:58:28,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:28,539 INFO L93 Difference]: Finished difference Result 364 states and 480 transitions. [2023-11-23 08:58:28,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 08:58:28,540 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 25 states have internal predecessors, (79), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 140 [2023-11-23 08:58:28,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:28,542 INFO L225 Difference]: With dead ends: 364 [2023-11-23 08:58:28,542 INFO L226 Difference]: Without dead ends: 188 [2023-11-23 08:58:28,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2023-11-23 08:58:28,543 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 10 mSDsluCounter, 2772 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2989 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:28,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2989 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 08:58:28,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-23 08:58:28,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-11-23 08:58:28,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 117 states have (on average 1.2307692307692308) internal successors, (144), 120 states have internal predecessors, (144), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-23 08:58:28,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 250 transitions. [2023-11-23 08:58:28,551 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 250 transitions. Word has length 140 [2023-11-23 08:58:28,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:28,552 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 250 transitions. [2023-11-23 08:58:28,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 25 states have internal predecessors, (79), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:58:28,552 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 250 transitions. [2023-11-23 08:58:28,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-23 08:58:28,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:28,553 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 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] [2023-11-23 08:58:28,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-23 08:58:28,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 08:58:28,756 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:28,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:28,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1137435644, now seen corresponding path program 8 times [2023-11-23 08:58:28,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:28,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604212573] [2023-11-23 08:58:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:28,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:28,861 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:28,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279239680] [2023-11-23 08:58:28,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:58:28,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:28,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:28,864 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:58:28,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 08:58:31,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:58:31,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:58:31,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 2667 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-23 08:58:31,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:32,011 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 32 proven. 136 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2023-11-23 08:58:32,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 89 proven. 36 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2023-11-23 08:58:32,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:32,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604212573] [2023-11-23 08:58:32,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:32,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279239680] [2023-11-23 08:58:32,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279239680] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:32,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:32,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15] total 35 [2023-11-23 08:58:32,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079914359] [2023-11-23 08:58:32,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:32,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-23 08:58:32,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:32,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-23 08:58:32,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1037, Unknown=0, NotChecked=0, Total=1190 [2023-11-23 08:58:32,579 INFO L87 Difference]: Start difference. First operand 188 states and 250 transitions. Second operand has 35 states, 33 states have (on average 2.393939393939394) internal successors, (79), 35 states have internal predecessors, (79), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:58:34,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:34,429 INFO L93 Difference]: Finished difference Result 366 states and 482 transitions. [2023-11-23 08:58:34,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 08:58:34,429 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 2.393939393939394) internal successors, (79), 35 states have internal predecessors, (79), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 142 [2023-11-23 08:58:34,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:34,431 INFO L225 Difference]: With dead ends: 366 [2023-11-23 08:58:34,431 INFO L226 Difference]: Without dead ends: 189 [2023-11-23 08:58:34,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 08:58:34,432 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 11 mSDsluCounter, 5139 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 5356 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:34,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 5356 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 08:58:34,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-23 08:58:34,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2023-11-23 08:58:34,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 118 states have (on average 1.228813559322034) internal successors, (145), 121 states have internal predecessors, (145), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-23 08:58:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 251 transitions. [2023-11-23 08:58:34,440 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 251 transitions. Word has length 142 [2023-11-23 08:58:34,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:34,441 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 251 transitions. [2023-11-23 08:58:34,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 2.393939393939394) internal successors, (79), 35 states have internal predecessors, (79), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:58:34,441 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 251 transitions. [2023-11-23 08:58:34,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-23 08:58:34,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:34,443 INFO L195 NwaCegarLoop]: trace histogram [18, 12, 12, 12, 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] [2023-11-23 08:58:34,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 08:58:34,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 08:58:34,664 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:34,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:34,665 INFO L85 PathProgramCache]: Analyzing trace with hash 887023438, now seen corresponding path program 9 times [2023-11-23 08:58:34,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:34,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057811678] [2023-11-23 08:58:34,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:34,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:34,744 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:34,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170023071] [2023-11-23 08:58:34,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:58:34,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:34,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:34,746 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:58:34,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 08:59:03,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-23 08:59:03,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:59:03,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 2252 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 08:59:03,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:59:03,534 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 115 proven. 45 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2023-11-23 08:59:03,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:59:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 108 proven. 45 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-23 08:59:04,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:59:04,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057811678] [2023-11-23 08:59:04,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:59:04,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170023071] [2023-11-23 08:59:04,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170023071] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:59:04,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:59:04,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2023-11-23 08:59:04,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795587138] [2023-11-23 08:59:04,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:59:04,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-23 08:59:04,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:59:04,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-23 08:59:04,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2023-11-23 08:59:04,006 INFO L87 Difference]: Start difference. First operand 189 states and 251 transitions. Second operand has 29 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 29 states have internal predecessors, (72), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:59:05,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:59:05,269 INFO L93 Difference]: Finished difference Result 368 states and 484 transitions. [2023-11-23 08:59:05,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 08:59:05,270 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 29 states have internal predecessors, (72), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 144 [2023-11-23 08:59:05,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:59:05,274 INFO L225 Difference]: With dead ends: 368 [2023-11-23 08:59:05,274 INFO L226 Difference]: Without dead ends: 190 [2023-11-23 08:59:05,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=808, Unknown=0, NotChecked=0, Total=992 [2023-11-23 08:59:05,276 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 12 mSDsluCounter, 2770 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:59:05,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2987 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 08:59:05,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-23 08:59:05,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2023-11-23 08:59:05,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 119 states have (on average 1.226890756302521) internal successors, (146), 122 states have internal predecessors, (146), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-23 08:59:05,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 252 transitions. [2023-11-23 08:59:05,288 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 252 transitions. Word has length 144 [2023-11-23 08:59:05,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:59:05,289 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 252 transitions. [2023-11-23 08:59:05,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 29 states have internal predecessors, (72), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:59:05,289 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 252 transitions. [2023-11-23 08:59:05,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-23 08:59:05,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:59:05,291 INFO L195 NwaCegarLoop]: trace histogram [20, 12, 12, 12, 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] [2023-11-23 08:59:05,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 08:59:05,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 08:59:05,511 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:59:05,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:59:05,512 INFO L85 PathProgramCache]: Analyzing trace with hash -184910204, now seen corresponding path program 10 times [2023-11-23 08:59:05,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:59:05,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758167470] [2023-11-23 08:59:05,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:59:05,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:59:05,611 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:59:05,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1947357191] [2023-11-23 08:59:05,612 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 08:59:05,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:59:05,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:59:05,613 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:59:05,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 08:59:06,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 08:59:06,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:59:06,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-23 08:59:06,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:59:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 266 proven. 55 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 08:59:06,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:59:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-11-23 08:59:07,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:59:07,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758167470] [2023-11-23 08:59:07,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:59:07,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947357191] [2023-11-23 08:59:07,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947357191] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:59:07,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:59:07,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2023-11-23 08:59:07,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552953873] [2023-11-23 08:59:07,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:59:07,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-23 08:59:07,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:59:07,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-23 08:59:07,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2023-11-23 08:59:07,560 INFO L87 Difference]: Start difference. First operand 190 states and 252 transitions. Second operand has 31 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 31 states have internal predecessors, (85), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:59:09,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:59:09,126 INFO L93 Difference]: Finished difference Result 370 states and 486 transitions. [2023-11-23 08:59:09,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 08:59:09,127 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 31 states have internal predecessors, (85), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 146 [2023-11-23 08:59:09,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:59:09,129 INFO L225 Difference]: With dead ends: 370 [2023-11-23 08:59:09,129 INFO L226 Difference]: Without dead ends: 191 [2023-11-23 08:59:09,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2023-11-23 08:59:09,131 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 17 mSDsluCounter, 3196 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 3413 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:59:09,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 3413 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 08:59:09,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-23 08:59:09,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2023-11-23 08:59:09,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 120 states have (on average 1.225) internal successors, (147), 123 states have internal predecessors, (147), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-23 08:59:09,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 253 transitions. [2023-11-23 08:59:09,140 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 253 transitions. Word has length 146 [2023-11-23 08:59:09,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:59:09,140 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 253 transitions. [2023-11-23 08:59:09,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 31 states have internal predecessors, (85), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 08:59:09,141 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 253 transitions. [2023-11-23 08:59:09,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-23 08:59:09,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:59:09,142 INFO L195 NwaCegarLoop]: trace histogram [22, 12, 12, 12, 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] [2023-11-23 08:59:09,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 08:59:09,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:59:09,356 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:59:09,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:59:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash 879064910, now seen corresponding path program 11 times [2023-11-23 08:59:09,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:59:09,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973890178] [2023-11-23 08:59:09,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:59:09,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:59:09,444 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:59:09,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [96476222] [2023-11-23 08:59:09,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-23 08:59:09,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:59:09,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:59:09,446 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:59:09,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process Killed by 15