./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_static_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_static_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 23ef598a219073b4e1ea2c3302ab5b9fcd0bd41db1d8d7141c8967f07530c02d --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:58:07,669 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:58:07,733 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:58:07,737 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:58:07,737 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:58:07,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:58:07,760 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:58:07,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:58:07,762 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:58:07,765 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:58:07,765 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:58:07,765 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:58:07,766 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:58:07,767 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:58:07,767 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:58:07,768 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:58:07,768 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:58:07,768 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:58:07,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:58:07,769 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:58:07,769 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:58:07,769 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:58:07,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:58:07,770 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:58:07,770 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:58:07,770 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:58:07,771 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:58:07,771 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:58:07,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:58:07,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:58:07,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:58:07,772 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:58:07,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:58:07,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:58:07,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:58:07,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:58:07,773 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:58:07,773 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:58:07,774 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:58:07,774 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23ef598a219073b4e1ea2c3302ab5b9fcd0bd41db1d8d7141c8967f07530c02d Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:58:08,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:58:08,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:58:08,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:58:08,058 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:58:08,058 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:58:08,059 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_static_harness.i [2023-11-23 08:58:09,112 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:58:09,476 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:58:09,476 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_static_harness.i [2023-11-23 08:58:09,505 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57e094edb/3f887e441d3a4110b6507cdd1f6d7aaf/FLAGc9fbb50cd [2023-11-23 08:58:09,518 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57e094edb/3f887e441d3a4110b6507cdd1f6d7aaf [2023-11-23 08:58:09,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:58:09,522 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:58:09,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:58:09,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:58:09,528 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:58:09,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:58:09" (1/1) ... [2023-11-23 08:58:09,529 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f41484e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:09, skipping insertion in model container [2023-11-23 08:58:09,529 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:58:09" (1/1) ... [2023-11-23 08:58:09,598 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:58:09,779 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_static_harness.i[4504,4517] [2023-11-23 08:58:09,788 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_static_harness.i[4564,4577] [2023-11-23 08:58:10,403 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:10,405 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:10,406 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:10,406 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:10,414 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:10,427 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:10,431 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:10,432 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:10,433 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:10,693 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:58:10,694 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:58:10,700 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:58:10,706 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:58:10,709 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:58:10,709 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:58:10,710 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:58:10,711 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:58:10,711 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:58:10,713 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:58:10,834 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:10,834 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:10,888 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:58:10,924 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:58:10,982 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_static_harness.i[4504,4517] [2023-11-23 08:58:10,982 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_static_harness.i[4564,4577] [2023-11-23 08:58:11,075 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:11,075 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:11,076 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:11,076 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:11,076 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:11,080 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:11,080 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:11,081 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:11,081 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:11,110 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:58:11,111 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:58:11,111 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:58:11,112 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:58:11,113 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:58:11,113 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:58:11,113 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:58:11,114 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:58:11,114 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:58:11,114 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:58:11,145 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:11,145 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:58:11,150 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7703-7714] [2023-11-23 08:58:11,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:58:11,284 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:11,284 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:11,284 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:11,284 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:11,284 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:11,285 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:11,285 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:11,285 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:11,285 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:11,285 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:11,285 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:11,286 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:11,286 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:11,286 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:11,286 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:58:11,292 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:58:11,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:11 WrapperNode [2023-11-23 08:58:11,293 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:58:11,294 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:58:11,294 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:58:11,294 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:58:11,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:11" (1/1) ... [2023-11-23 08:58:11,363 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:11" (1/1) ... [2023-11-23 08:58:11,434 INFO L138 Inliner]: procedures = 688, calls = 1510, calls flagged for inlining = 54, calls inlined = 9, statements flattened = 652 [2023-11-23 08:58:11,448 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:58:11,449 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:58:11,449 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:58:11,449 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:58:11,472 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:11" (1/1) ... [2023-11-23 08:58:11,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:11" (1/1) ... [2023-11-23 08:58:11,478 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:11" (1/1) ... [2023-11-23 08:58:11,478 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:11" (1/1) ... [2023-11-23 08:58:11,496 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:11" (1/1) ... [2023-11-23 08:58:11,515 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:11" (1/1) ... [2023-11-23 08:58:11,530 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:11" (1/1) ... [2023-11-23 08:58:11,533 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:11" (1/1) ... [2023-11-23 08:58:11,540 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:58:11,549 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:58:11,549 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:58:11,549 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:58:11,550 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:11" (1/1) ... [2023-11-23 08:58:11,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:58:11,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:11,610 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 08:58:11,636 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 08:58:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 08:58:11,665 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 08:58:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:58:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 08:58:11,666 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 08:58:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:58:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 08:58:11,667 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 08:58:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:58:11,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:58:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:58:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:58:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:58:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:58:11,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:58:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:58:11,668 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:58:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 08:58:11,668 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 08:58:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-23 08:58:11,669 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-23 08:58:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:58:11,669 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:58:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:58:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:58:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:58:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 08:58:11,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 08:58:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 08:58:11,670 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 08:58:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:58:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-23 08:58:11,671 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-23 08:58:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-23 08:58:11,671 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-23 08:58:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:58:11,869 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:58:11,870 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:58:12,295 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:58:12,353 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:58:12,353 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 08:58:12,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:58:12 BoogieIcfgContainer [2023-11-23 08:58:12,354 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:58:12,355 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:58:12,355 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:58:12,358 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:58:12,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:58:09" (1/3) ... [2023-11-23 08:58:12,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dec12e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:58:12, skipping insertion in model container [2023-11-23 08:58:12,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:11" (2/3) ... [2023-11-23 08:58:12,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dec12e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:58:12, skipping insertion in model container [2023-11-23 08:58:12,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:58:12" (3/3) ... [2023-11-23 08:58:12,360 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_static_harness.i [2023-11-23 08:58:12,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:58:12,373 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:58:12,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:58:12,410 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;@3321f00c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:58:12,411 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:58:12,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 80 states have (on average 1.2875) internal successors, (103), 80 states have internal predecessors, (103), 39 states have call successors, (39), 12 states have call predecessors, (39), 12 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-23 08:58:12,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-23 08:58:12,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:12,423 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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] [2023-11-23 08:58:12,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:12,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:12,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1722320314, now seen corresponding path program 1 times [2023-11-23 08:58:12,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:12,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994753166] [2023-11-23 08:58:12,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:12,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:12,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:12,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994753166] [2023-11-23 08:58:12,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 08:58:12,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928527427] [2023-11-23 08:58:12,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:12,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:12,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:12,794 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 08:58:12,816 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 08:58:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:13,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 2245 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 08:58:13,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:13,232 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2023-11-23 08:58:13,232 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:58:13,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928527427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:58:13,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:58:13,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 08:58:13,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187353325] [2023-11-23 08:58:13,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:58:13,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 08:58:13,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:13,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 08:58:13,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 08:58:13,260 INFO L87 Difference]: Start difference. First operand has 132 states, 80 states have (on average 1.2875) internal successors, (103), 80 states have internal predecessors, (103), 39 states have call successors, (39), 12 states have call predecessors, (39), 12 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 08:58:13,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:13,442 INFO L93 Difference]: Finished difference Result 262 states and 389 transitions. [2023-11-23 08:58:13,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 08:58:13,446 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 104 [2023-11-23 08:58:13,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:13,455 INFO L225 Difference]: With dead ends: 262 [2023-11-23 08:58:13,456 INFO L226 Difference]: Without dead ends: 129 [2023-11-23 08:58:13,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 103 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 08:58:13,471 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:13,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:58:13,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-23 08:58:13,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-11-23 08:58:13,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 78 states have internal predecessors, (94), 39 states have call successors, (39), 12 states have call predecessors, (39), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-23 08:58:13,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 171 transitions. [2023-11-23 08:58:13,547 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 171 transitions. Word has length 104 [2023-11-23 08:58:13,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:13,547 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 171 transitions. [2023-11-23 08:58:13,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 08:58:13,548 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 171 transitions. [2023-11-23 08:58:13,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-23 08:58:13,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:13,555 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:58:13,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 08:58:13,769 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 08:58:13,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:13,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:13,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1592532727, now seen corresponding path program 1 times [2023-11-23 08:58:13,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:13,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706678208] [2023-11-23 08:58:13,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:13,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:13,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:13,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586374778] [2023-11-23 08:58:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:13,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:13,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:13,904 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 08:58:13,932 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 08:58:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:14,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 08:58:14,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:14,573 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2023-11-23 08:58:14,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:58:14,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:14,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706678208] [2023-11-23 08:58:14,574 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:14,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586374778] [2023-11-23 08:58:14,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586374778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:58:14,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:58:14,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 08:58:14,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683498403] [2023-11-23 08:58:14,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:58:14,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:58:14,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:14,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:58:14,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:58:14,577 INFO L87 Difference]: Start difference. First operand 129 states and 171 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 08:58:15,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:15,024 INFO L93 Difference]: Finished difference Result 217 states and 284 transitions. [2023-11-23 08:58:15,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:58:15,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 119 [2023-11-23 08:58:15,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:15,027 INFO L225 Difference]: With dead ends: 217 [2023-11-23 08:58:15,028 INFO L226 Difference]: Without dead ends: 131 [2023-11-23 08:58:15,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:58:15,029 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 37 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:15,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 757 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:58:15,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-23 08:58:15,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-11-23 08:58:15,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 78 states have (on average 1.2179487179487178) internal successors, (95), 80 states have internal predecessors, (95), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 08:58:15,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 174 transitions. [2023-11-23 08:58:15,040 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 174 transitions. Word has length 119 [2023-11-23 08:58:15,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:15,040 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 174 transitions. [2023-11-23 08:58:15,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 08:58:15,041 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 174 transitions. [2023-11-23 08:58:15,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-23 08:58:15,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:15,042 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:15,059 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 08:58:15,260 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 08:58:15,260 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:15,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:15,261 INFO L85 PathProgramCache]: Analyzing trace with hash -170327510, now seen corresponding path program 1 times [2023-11-23 08:58:15,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:15,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960111728] [2023-11-23 08:58:15,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:15,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:15,329 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:15,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114849298] [2023-11-23 08:58:15,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:15,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:15,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:15,333 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 08:58:15,348 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 08:58:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:15,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 2454 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:58:15,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-11-23 08:58:15,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:58:15,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:15,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960111728] [2023-11-23 08:58:15,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:15,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114849298] [2023-11-23 08:58:15,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114849298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:58:15,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:58:15,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 08:58:15,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444257113] [2023-11-23 08:58:15,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:58:15,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:58:15,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:15,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:58:15,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:58:15,751 INFO L87 Difference]: Start difference. First operand 131 states and 174 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-23 08:58:16,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:16,088 INFO L93 Difference]: Finished difference Result 224 states and 298 transitions. [2023-11-23 08:58:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:58:16,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 132 [2023-11-23 08:58:16,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:16,090 INFO L225 Difference]: With dead ends: 224 [2023-11-23 08:58:16,090 INFO L226 Difference]: Without dead ends: 136 [2023-11-23 08:58:16,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:58:16,091 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 10 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:16,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 464 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:58:16,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-23 08:58:16,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2023-11-23 08:58:16,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 80 states have (on average 1.2125) internal successors, (97), 82 states have internal predecessors, (97), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 08:58:16,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 176 transitions. [2023-11-23 08:58:16,109 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 176 transitions. Word has length 132 [2023-11-23 08:58:16,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:16,109 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 176 transitions. [2023-11-23 08:58:16,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-23 08:58:16,110 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 176 transitions. [2023-11-23 08:58:16,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-23 08:58:16,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:16,111 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:16,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 08:58:16,324 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 08:58:16,325 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:16,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:16,325 INFO L85 PathProgramCache]: Analyzing trace with hash 222699500, now seen corresponding path program 1 times [2023-11-23 08:58:16,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:16,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325221605] [2023-11-23 08:58:16,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:16,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:16,479 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:16,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219220628] [2023-11-23 08:58:16,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:16,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:16,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:16,481 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 08:58:16,505 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 08:58:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:16,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 2459 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-23 08:58:16,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:17,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:58:17,188 WARN L876 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (<= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| |c_aws_mul_size_checked_#in~r#1.offset|) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.base| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))) |c_#memory_$Pointer$.base|))) is different from true [2023-11-23 08:58:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2023-11-23 08:58:17,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:58:17,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:17,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325221605] [2023-11-23 08:58:17,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:17,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219220628] [2023-11-23 08:58:17,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219220628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:58:17,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:58:17,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 08:58:17,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164257378] [2023-11-23 08:58:17,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:58:17,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 08:58:17,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:17,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 08:58:17,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=203, Unknown=1, NotChecked=28, Total=272 [2023-11-23 08:58:17,437 INFO L87 Difference]: Start difference. First operand 133 states and 176 transitions. Second operand has 17 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 8 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) [2023-11-23 08:58:22,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:22,036 INFO L93 Difference]: Finished difference Result 294 states and 405 transitions. [2023-11-23 08:58:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 08:58:22,037 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 8 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) Word has length 132 [2023-11-23 08:58:22,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:22,039 INFO L225 Difference]: With dead ends: 294 [2023-11-23 08:58:22,039 INFO L226 Difference]: Without dead ends: 204 [2023-11-23 08:58:22,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=629, Unknown=1, NotChecked=52, Total=812 [2023-11-23 08:58:22,040 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 120 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 1698 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 334 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:22,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1084 Invalid, 2113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1698 Invalid, 0 Unknown, 334 Unchecked, 4.3s Time] [2023-11-23 08:58:22,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-23 08:58:22,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 134. [2023-11-23 08:58:22,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 83 states have internal predecessors, (98), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 08:58:22,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 177 transitions. [2023-11-23 08:58:22,079 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 177 transitions. Word has length 132 [2023-11-23 08:58:22,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:22,080 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 177 transitions. [2023-11-23 08:58:22,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 8 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) [2023-11-23 08:58:22,080 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 177 transitions. [2023-11-23 08:58:22,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-23 08:58:22,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:22,086 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:22,103 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 08:58:22,300 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 08:58:22,301 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:22,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:22,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1756128188, now seen corresponding path program 1 times [2023-11-23 08:58:22,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:22,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122777130] [2023-11-23 08:58:22,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:22,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:22,363 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:22,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247065451] [2023-11-23 08:58:22,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:22,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:22,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:22,388 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 08:58:22,414 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 08:58:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:22,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 2459 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-23 08:58:22,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:22,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 08:58:22,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2023-11-23 08:58:22,966 WARN L876 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (<= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| |c_aws_mul_size_checked_#in~r#1.offset|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_int| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))) |c_#memory_int|))) is different from true [2023-11-23 08:58:23,160 WARN L876 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_int| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))) |c_#memory_int|) (<= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| 0))) (not |c_aws_array_list_is_valid_#t~short140|)) is different from true [2023-11-23 08:58:23,161 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2023-11-23 08:58:23,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:23,374 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-11-23 08:58:23,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:23,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122777130] [2023-11-23 08:58:23,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:23,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247065451] [2023-11-23 08:58:23,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247065451] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 08:58:23,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:58:23,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2023-11-23 08:58:23,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322322635] [2023-11-23 08:58:23,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:58:23,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:58:23,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:23,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:58:23,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=230, Unknown=2, NotChecked=62, Total=342 [2023-11-23 08:58:23,376 INFO L87 Difference]: Start difference. First operand 134 states and 177 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-23 08:58:23,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:23,864 INFO L93 Difference]: Finished difference Result 230 states and 305 transitions. [2023-11-23 08:58:23,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:58:23,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 134 [2023-11-23 08:58:23,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:23,866 INFO L225 Difference]: With dead ends: 230 [2023-11-23 08:58:23,866 INFO L226 Difference]: Without dead ends: 139 [2023-11-23 08:58:23,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=259, Unknown=2, NotChecked=66, Total=380 [2023-11-23 08:58:23,867 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 5 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:23,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 582 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:58:23,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-23 08:58:23,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2023-11-23 08:58:23,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 82 states have (on average 1.2073170731707317) internal successors, (99), 84 states have internal predecessors, (99), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 08:58:23,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 178 transitions. [2023-11-23 08:58:23,878 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 178 transitions. Word has length 134 [2023-11-23 08:58:23,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:23,878 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 178 transitions. [2023-11-23 08:58:23,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-23 08:58:23,879 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 178 transitions. [2023-11-23 08:58:23,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-23 08:58:23,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:23,880 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:23,899 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 08:58:24,096 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 08:58:24,097 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:24,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:24,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1076069818, now seen corresponding path program 1 times [2023-11-23 08:58:24,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:24,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032769578] [2023-11-23 08:58:24,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:24,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:24,213 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:24,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586805750] [2023-11-23 08:58:24,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:24,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:24,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:24,215 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 08:58:24,271 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 08:58:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:24,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 2464 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 08:58:24,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 08:58:24,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:58:24,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:24,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032769578] [2023-11-23 08:58:24,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:24,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586805750] [2023-11-23 08:58:24,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586805750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:58:24,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:58:24,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:58:24,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562110812] [2023-11-23 08:58:24,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:58:24,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:58:24,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:24,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:58:24,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:58:24,710 INFO L87 Difference]: Start difference. First operand 135 states and 178 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-23 08:58:25,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:25,343 INFO L93 Difference]: Finished difference Result 244 states and 318 transitions. [2023-11-23 08:58:25,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:58:25,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 134 [2023-11-23 08:58:25,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:25,344 INFO L225 Difference]: With dead ends: 244 [2023-11-23 08:58:25,344 INFO L226 Difference]: Without dead ends: 135 [2023-11-23 08:58:25,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 129 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 08:58:25,346 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 9 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:25,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 759 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 08:58:25,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-23 08:58:25,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2023-11-23 08:58:25,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 82 states have (on average 1.1951219512195121) internal successors, (98), 84 states have internal predecessors, (98), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 08:58:25,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 177 transitions. [2023-11-23 08:58:25,354 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 177 transitions. Word has length 134 [2023-11-23 08:58:25,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:25,354 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 177 transitions. [2023-11-23 08:58:25,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-23 08:58:25,354 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 177 transitions. [2023-11-23 08:58:25,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-23 08:58:25,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:25,355 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:25,371 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 08:58:25,570 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 08:58:25,571 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:25,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:25,571 INFO L85 PathProgramCache]: Analyzing trace with hash -669231602, now seen corresponding path program 1 times [2023-11-23 08:58:25,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:25,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937288991] [2023-11-23 08:58:25,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:25,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:25,674 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:25,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1354257314] [2023-11-23 08:58:25,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:25,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:25,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:25,676 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 08:58:25,697 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 08:58:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:26,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 2472 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 08:58:26,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 08:58:26,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:58:26,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:26,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937288991] [2023-11-23 08:58:26,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:26,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354257314] [2023-11-23 08:58:26,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354257314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:58:26,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:58:26,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 08:58:26,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610855566] [2023-11-23 08:58:26,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:58:26,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 08:58:26,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:26,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 08:58:26,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 08:58:26,164 INFO L87 Difference]: Start difference. First operand 135 states and 177 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 08:58:26,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:26,397 INFO L93 Difference]: Finished difference Result 246 states and 320 transitions. [2023-11-23 08:58:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 08:58:26,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 136 [2023-11-23 08:58:26,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:26,400 INFO L225 Difference]: With dead ends: 246 [2023-11-23 08:58:26,400 INFO L226 Difference]: Without dead ends: 136 [2023-11-23 08:58:26,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 08:58:26,401 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:26,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 312 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:58:26,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-23 08:58:26,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2023-11-23 08:58:26,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 85 states have internal predecessors, (99), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 08:58:26,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 178 transitions. [2023-11-23 08:58:26,426 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 178 transitions. Word has length 136 [2023-11-23 08:58:26,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:26,428 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 178 transitions. [2023-11-23 08:58:26,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 08:58:26,429 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 178 transitions. [2023-11-23 08:58:26,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-23 08:58:26,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:26,430 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:26,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-23 08:58:26,631 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 08:58:26,631 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:26,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:26,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1666494623, now seen corresponding path program 1 times [2023-11-23 08:58:26,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:26,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129303404] [2023-11-23 08:58:26,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:26,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:26,747 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:26,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364047620] [2023-11-23 08:58:26,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:26,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:26,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:26,765 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 08:58:26,836 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 08:58:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:58:27,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 2491 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 08:58:27,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 194 proven. 1 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 08:58:27,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:27,538 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-11-23 08:58:27,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:27,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129303404] [2023-11-23 08:58:27,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:27,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364047620] [2023-11-23 08:58:27,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364047620] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:27,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:27,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-23 08:58:27,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414874876] [2023-11-23 08:58:27,540 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:27,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 08:58:27,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:27,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 08:58:27,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:58:27,541 INFO L87 Difference]: Start difference. First operand 136 states and 178 transitions. Second operand has 13 states, 11 states have (on average 5.818181818181818) internal successors, (64), 13 states have internal predecessors, (64), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 08:58:28,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:28,380 INFO L93 Difference]: Finished difference Result 247 states and 321 transitions. [2023-11-23 08:58:28,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:58:28,381 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.818181818181818) internal successors, (64), 13 states have internal predecessors, (64), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 137 [2023-11-23 08:58:28,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:28,382 INFO L225 Difference]: With dead ends: 247 [2023-11-23 08:58:28,382 INFO L226 Difference]: Without dead ends: 137 [2023-11-23 08:58:28,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 261 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 08:58:28,383 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 16 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:28,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1058 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:58:28,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-23 08:58:28,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-11-23 08:58:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 86 states have internal predecessors, (100), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 08:58:28,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 179 transitions. [2023-11-23 08:58:28,392 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 179 transitions. Word has length 137 [2023-11-23 08:58:28,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:28,392 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 179 transitions. [2023-11-23 08:58:28,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.818181818181818) internal successors, (64), 13 states have internal predecessors, (64), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 08:58:28,393 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 179 transitions. [2023-11-23 08:58:28,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-23 08:58:28,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:28,395 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:28,430 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 08:58:28,631 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 08:58:28,631 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:28,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:28,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1059563566, now seen corresponding path program 2 times [2023-11-23 08:58:28,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:28,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136214114] [2023-11-23 08:58:28,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:28,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:28,732 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:28,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [667010977] [2023-11-23 08:58:28,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:58:28,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:28,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:28,744 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 08:58:28,772 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 08:58:30,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:58:30,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:58:30,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 2510 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 08:58:30,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 194 proven. 3 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 08:58:30,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-11-23 08:58:30,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:30,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136214114] [2023-11-23 08:58:30,602 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:30,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667010977] [2023-11-23 08:58:30,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667010977] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:30,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:30,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-23 08:58:30,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002458661] [2023-11-23 08:58:30,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:30,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 08:58:30,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:30,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 08:58:30,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:58:30,604 INFO L87 Difference]: Start difference. First operand 137 states and 179 transitions. Second operand has 15 states, 13 states have (on average 5.076923076923077) internal successors, (66), 15 states have internal predecessors, (66), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 08:58:31,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:31,407 INFO L93 Difference]: Finished difference Result 248 states and 322 transitions. [2023-11-23 08:58:31,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:58:31,407 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.076923076923077) internal successors, (66), 15 states have internal predecessors, (66), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 138 [2023-11-23 08:58:31,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:31,408 INFO L225 Difference]: With dead ends: 248 [2023-11-23 08:58:31,408 INFO L226 Difference]: Without dead ends: 138 [2023-11-23 08:58:31,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-11-23 08:58:31,409 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 12 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:31,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1208 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:58:31,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-23 08:58:31,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-11-23 08:58:31,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 85 states have (on average 1.188235294117647) internal successors, (101), 87 states have internal predecessors, (101), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 08:58:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 180 transitions. [2023-11-23 08:58:31,415 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 180 transitions. Word has length 138 [2023-11-23 08:58:31,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:31,416 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 180 transitions. [2023-11-23 08:58:31,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.076923076923077) internal successors, (66), 15 states have internal predecessors, (66), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 08:58:31,416 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 180 transitions. [2023-11-23 08:58:31,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-23 08:58:31,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:31,417 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:31,450 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 08:58:31,649 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 08:58:31,650 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:31,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:31,650 INFO L85 PathProgramCache]: Analyzing trace with hash -575430017, now seen corresponding path program 3 times [2023-11-23 08:58:31,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:31,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250192077] [2023-11-23 08:58:31,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:31,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:31,714 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:31,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1498706947] [2023-11-23 08:58:31,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:58:31,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:31,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:31,716 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 08:58:31,743 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 08:58:34,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-11-23 08:58:34,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:58:34,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 2422 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-23 08:58:34,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:34,183 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 194 proven. 6 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 08:58:34,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:34,558 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-11-23 08:58:34,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:34,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250192077] [2023-11-23 08:58:34,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:34,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498706947] [2023-11-23 08:58:34,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498706947] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:34,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:34,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-11-23 08:58:34,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832720217] [2023-11-23 08:58:34,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:34,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 08:58:34,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:34,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 08:58:34,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:58:34,562 INFO L87 Difference]: Start difference. First operand 138 states and 180 transitions. Second operand has 17 states, 15 states have (on average 4.533333333333333) internal successors, (68), 17 states have internal predecessors, (68), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 08:58:35,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:35,767 INFO L93 Difference]: Finished difference Result 249 states and 323 transitions. [2023-11-23 08:58:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 08:58:35,767 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.533333333333333) internal successors, (68), 17 states have internal predecessors, (68), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 139 [2023-11-23 08:58:35,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:35,768 INFO L225 Difference]: With dead ends: 249 [2023-11-23 08:58:35,768 INFO L226 Difference]: Without dead ends: 139 [2023-11-23 08:58:35,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2023-11-23 08:58:35,770 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 10 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:35,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1660 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 08:58:35,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-23 08:58:35,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2023-11-23 08:58:35,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 86 states have (on average 1.186046511627907) internal successors, (102), 88 states have internal predecessors, (102), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 08:58:35,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 181 transitions. [2023-11-23 08:58:35,775 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 181 transitions. Word has length 139 [2023-11-23 08:58:35,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:35,776 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 181 transitions. [2023-11-23 08:58:35,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.533333333333333) internal successors, (68), 17 states have internal predecessors, (68), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 08:58:35,779 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 181 transitions. [2023-11-23 08:58:35,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-23 08:58:35,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:35,781 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:35,811 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 08:58:35,995 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 08:58:35,995 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:35,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:35,996 INFO L85 PathProgramCache]: Analyzing trace with hash 279376462, now seen corresponding path program 4 times [2023-11-23 08:58:35,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:35,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606540661] [2023-11-23 08:58:35,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:35,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:36,044 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:36,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1194436963] [2023-11-23 08:58:36,044 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 08:58:36,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:36,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:36,045 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 08:58:36,072 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 08:58:36,621 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 08:58:36,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:58:36,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 2548 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 08:58:36,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 194 proven. 10 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 08:58:36,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:37,053 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-11-23 08:58:37,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:37,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606540661] [2023-11-23 08:58:37,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:37,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194436963] [2023-11-23 08:58:37,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194436963] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:37,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:37,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-11-23 08:58:37,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243554630] [2023-11-23 08:58:37,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:37,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-23 08:58:37,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:37,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-23 08:58:37,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:58:37,055 INFO L87 Difference]: Start difference. First operand 139 states and 181 transitions. Second operand has 19 states, 17 states have (on average 4.117647058823529) internal successors, (70), 19 states have internal predecessors, (70), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 08:58:38,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:38,703 INFO L93 Difference]: Finished difference Result 250 states and 324 transitions. [2023-11-23 08:58:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 08:58:38,703 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.117647058823529) internal successors, (70), 19 states have internal predecessors, (70), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 140 [2023-11-23 08:58:38,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:38,704 INFO L225 Difference]: With dead ends: 250 [2023-11-23 08:58:38,704 INFO L226 Difference]: Without dead ends: 140 [2023-11-23 08:58:38,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 261 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 08:58:38,705 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 10 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:38,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1962 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 08:58:38,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-23 08:58:38,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-11-23 08:58:38,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 87 states have (on average 1.1839080459770115) internal successors, (103), 89 states have internal predecessors, (103), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 08:58:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 182 transitions. [2023-11-23 08:58:38,712 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 182 transitions. Word has length 140 [2023-11-23 08:58:38,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:38,712 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 182 transitions. [2023-11-23 08:58:38,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.117647058823529) internal successors, (70), 19 states have internal predecessors, (70), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 08:58:38,712 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 182 transitions. [2023-11-23 08:58:38,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-23 08:58:38,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:38,713 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:38,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 08:58:38,930 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 08:58:38,930 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:38,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:38,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1008573535, now seen corresponding path program 5 times [2023-11-23 08:58:38,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:38,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760297002] [2023-11-23 08:58:38,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:38,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:39,020 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:39,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135337544] [2023-11-23 08:58:39,020 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-23 08:58:39,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:39,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:39,024 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 08:58:39,044 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 08:58:39,536 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-11-23 08:58:39,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:58:39,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 08:58:39,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:39,667 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 194 proven. 15 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 08:58:39,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:39,959 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-11-23 08:58:39,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:58:39,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760297002] [2023-11-23 08:58:39,960 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:58:39,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135337544] [2023-11-23 08:58:39,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135337544] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:58:39,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:58:39,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2023-11-23 08:58:39,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500938788] [2023-11-23 08:58:39,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:58:39,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-23 08:58:39,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:58:39,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-23 08:58:39,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-11-23 08:58:39,962 INFO L87 Difference]: Start difference. First operand 140 states and 182 transitions. Second operand has 21 states, 19 states have (on average 3.789473684210526) internal successors, (72), 21 states have internal predecessors, (72), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 08:58:41,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:58:41,269 INFO L93 Difference]: Finished difference Result 251 states and 325 transitions. [2023-11-23 08:58:41,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:58:41,271 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.789473684210526) internal successors, (72), 21 states have internal predecessors, (72), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 141 [2023-11-23 08:58:41,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:58:41,272 INFO L225 Difference]: With dead ends: 251 [2023-11-23 08:58:41,272 INFO L226 Difference]: Without dead ends: 141 [2023-11-23 08:58:41,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-11-23 08:58:41,273 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 10 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:58:41,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2110 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 08:58:41,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-11-23 08:58:41,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2023-11-23 08:58:41,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 88 states have (on average 1.1818181818181819) internal successors, (104), 90 states have internal predecessors, (104), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 08:58:41,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 183 transitions. [2023-11-23 08:58:41,282 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 183 transitions. Word has length 141 [2023-11-23 08:58:41,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:58:41,282 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 183 transitions. [2023-11-23 08:58:41,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.789473684210526) internal successors, (72), 21 states have internal predecessors, (72), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 08:58:41,283 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 183 transitions. [2023-11-23 08:58:41,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-23 08:58:41,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:58:41,284 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:41,299 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 08:58:41,500 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 08:58:41,500 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:58:41,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:58:41,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2138846318, now seen corresponding path program 6 times [2023-11-23 08:58:41,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:58:41,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152639875] [2023-11-23 08:58:41,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:58:41,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:58:41,614 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:58:41,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1498123900] [2023-11-23 08:58:41,617 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-23 08:58:41,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:58:41,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:58:41,628 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 08:58:41,652 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 08:58:55,875 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-11-23 08:58:55,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:58:55,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 149 conjunts are in the unsatisfiable core [2023-11-23 08:58:55,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:58:55,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-23 08:58:56,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:58:56,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2023-11-23 08:58:56,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:59:04,413 INFO L349 Elim1Store]: treesize reduction 112, result has 20.6 percent of original size [2023-11-23 08:59:04,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 241 treesize of output 339 [2023-11-23 08:59:04,644 INFO L349 Elim1Store]: treesize reduction 168, result has 32.5 percent of original size [2023-11-23 08:59:04,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 211 treesize of output 353 [2023-11-23 08:59:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 16 proven. 68 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2023-11-23 08:59:04,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:59:18,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:59:18,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152639875] [2023-11-23 08:59:18,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:59:18,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498123900] [2023-11-23 08:59:18,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498123900] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:59:18,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:59:18,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2023-11-23 08:59:18,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128907363] [2023-11-23 08:59:18,104 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 08:59:18,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-23 08:59:18,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:59:18,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-23 08:59:18,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=971, Unknown=4, NotChecked=0, Total=1056 [2023-11-23 08:59:18,105 INFO L87 Difference]: Start difference. First operand 141 states and 183 transitions. Second operand has 29 states, 22 states have (on average 2.227272727272727) internal successors, (49), 24 states have internal predecessors, (49), 10 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (23), 10 states have call predecessors, (23), 9 states have call successors, (23) [2023-11-23 08:59:24,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 08:59:33,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 08:59:36,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:59:36,804 INFO L93 Difference]: Finished difference Result 195 states and 262 transitions. [2023-11-23 08:59:36,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-23 08:59:36,805 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 22 states have (on average 2.227272727272727) internal successors, (49), 24 states have internal predecessors, (49), 10 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (23), 10 states have call predecessors, (23), 9 states have call successors, (23) Word has length 142 [2023-11-23 08:59:36,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:59:36,806 INFO L225 Difference]: With dead ends: 195 [2023-11-23 08:59:36,806 INFO L226 Difference]: Without dead ends: 193 [2023-11-23 08:59:36,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=173, Invalid=2076, Unknown=7, NotChecked=0, Total=2256 [2023-11-23 08:59:36,807 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 132 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 123 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 2662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:59:36,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 1498 Invalid, 2662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2536 Invalid, 3 Unknown, 0 Unchecked, 10.9s Time] [2023-11-23 08:59:36,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-23 08:59:36,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 157. [2023-11-23 08:59:36,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 100 states have (on average 1.17) internal successors, (117), 103 states have internal predecessors, (117), 40 states have call successors, (40), 13 states have call predecessors, (40), 16 states have return successors, (47), 40 states have call predecessors, (47), 39 states have call successors, (47) [2023-11-23 08:59:36,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 204 transitions. [2023-11-23 08:59:36,848 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 204 transitions. Word has length 142 [2023-11-23 08:59:36,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:59:36,848 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 204 transitions. [2023-11-23 08:59:36,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 22 states have (on average 2.227272727272727) internal successors, (49), 24 states have internal predecessors, (49), 10 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (23), 10 states have call predecessors, (23), 9 states have call successors, (23) [2023-11-23 08:59:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 204 transitions. [2023-11-23 08:59:36,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-23 08:59:36,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:59:36,862 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:36,899 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 08:59:37,081 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 08:59:37,081 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:59:37,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:59:37,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1200622510, now seen corresponding path program 1 times [2023-11-23 08:59:37,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:59:37,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808774237] [2023-11-23 08:59:37,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:59:37,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:59:37,244 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:59:37,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394935011] [2023-11-23 08:59:37,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:59:37,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:59:37,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:59:37,261 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 08:59:37,280 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 08:59:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:59:37,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 2586 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 08:59:37,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:59:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 194 proven. 21 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 08:59:38,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:59:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-11-23 08:59:38,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:59:38,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808774237] [2023-11-23 08:59:38,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:59:38,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394935011] [2023-11-23 08:59:38,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394935011] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:59:38,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:59:38,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2023-11-23 08:59:38,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309561469] [2023-11-23 08:59:38,478 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:59:38,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 08:59:38,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:59:38,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 08:59:38,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2023-11-23 08:59:38,480 INFO L87 Difference]: Start difference. First operand 157 states and 204 transitions. Second operand has 23 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 23 states have internal predecessors, (74), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 08:59:40,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:59:40,306 INFO L93 Difference]: Finished difference Result 284 states and 367 transitions. [2023-11-23 08:59:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 08:59:40,307 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 23 states have internal predecessors, (74), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 142 [2023-11-23 08:59:40,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:59:40,308 INFO L225 Difference]: With dead ends: 284 [2023-11-23 08:59:40,308 INFO L226 Difference]: Without dead ends: 158 [2023-11-23 08:59:40,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2023-11-23 08:59:40,309 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 10 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2260 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:59:40,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2260 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 08:59:40,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-23 08:59:40,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2023-11-23 08:59:40,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 104 states have internal predecessors, (118), 40 states have call successors, (40), 13 states have call predecessors, (40), 16 states have return successors, (47), 40 states have call predecessors, (47), 39 states have call successors, (47) [2023-11-23 08:59:40,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 205 transitions. [2023-11-23 08:59:40,320 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 205 transitions. Word has length 142 [2023-11-23 08:59:40,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:59:40,320 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 205 transitions. [2023-11-23 08:59:40,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 23 states have internal predecessors, (74), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 08:59:40,321 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 205 transitions. [2023-11-23 08:59:40,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-23 08:59:40,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:59:40,322 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 7, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:40,352 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 08:59:40,536 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 08:59:40,537 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:59:40,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:59:40,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1879340415, now seen corresponding path program 2 times [2023-11-23 08:59:40,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:59:40,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390071993] [2023-11-23 08:59:40,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:59:40,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:59:40,592 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:59:40,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928357023] [2023-11-23 08:59:40,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:59:40,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:59:40,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:59:40,594 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 08:59:40,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 08:59:41,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:59:41,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:59:41,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 2605 conjuncts, 109 conjunts are in the unsatisfiable core [2023-11-23 08:59:41,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:59:41,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:59:41,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2023-11-23 08:59:55,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:59:55,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:59:55,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 285 [2023-11-23 08:59:55,344 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2023-11-23 08:59:55,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:59:56,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:59:56,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390071993] [2023-11-23 08:59:56,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:59:56,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928357023] [2023-11-23 08:59:56,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928357023] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:59:56,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:59:56,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2023-11-23 08:59:56,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362695210] [2023-11-23 08:59:56,688 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 08:59:56,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-23 08:59:56,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:59:56,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-23 08:59:56,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=741, Unknown=6, NotChecked=0, Total=812 [2023-11-23 08:59:56,689 INFO L87 Difference]: Start difference. First operand 158 states and 205 transitions. Second operand has 25 states, 19 states have (on average 2.473684210526316) internal successors, (47), 21 states have internal predecessors, (47), 10 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 9 states have call successors, (23) [2023-11-23 09:00:04,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 09:00:06,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 09:00:19,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:00:19,466 INFO L93 Difference]: Finished difference Result 203 states and 272 transitions. [2023-11-23 09:00:19,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-23 09:00:19,467 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.473684210526316) internal successors, (47), 21 states have internal predecessors, (47), 10 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 9 states have call successors, (23) Word has length 143 [2023-11-23 09:00:19,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:00:19,468 INFO L225 Difference]: With dead ends: 203 [2023-11-23 09:00:19,468 INFO L226 Difference]: Without dead ends: 201 [2023-11-23 09:00:19,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=151, Invalid=1562, Unknown=9, NotChecked=0, Total=1722 [2023-11-23 09:00:19,469 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 127 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 114 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2023-11-23 09:00:19,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 1503 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2662 Invalid, 3 Unknown, 0 Unchecked, 13.0s Time] [2023-11-23 09:00:19,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-11-23 09:00:19,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 161. [2023-11-23 09:00:19,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 104 states have (on average 1.1826923076923077) internal successors, (123), 107 states have internal predecessors, (123), 40 states have call successors, (40), 13 states have call predecessors, (40), 16 states have return successors, (47), 40 states have call predecessors, (47), 39 states have call successors, (47) [2023-11-23 09:00:19,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 210 transitions. [2023-11-23 09:00:19,485 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 210 transitions. Word has length 143 [2023-11-23 09:00:19,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:00:19,487 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 210 transitions. [2023-11-23 09:00:19,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.473684210526316) internal successors, (47), 21 states have internal predecessors, (47), 10 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 9 states have call successors, (23) [2023-11-23 09:00:19,487 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 210 transitions. [2023-11-23 09:00:19,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-23 09:00:19,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:00:19,489 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 7, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:19,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 09:00:19,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 09:00:19,709 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:00:19,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:00:19,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1735568511, now seen corresponding path program 1 times [2023-11-23 09:00:19,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:00:19,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877433491] [2023-11-23 09:00:19,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:00:19,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:00:19,761 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:00:19,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239313599] [2023-11-23 09:00:19,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:00:19,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:00:19,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:00:19,763 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 09:00:19,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 09:00:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:00:20,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 2610 conjuncts, 113 conjunts are in the unsatisfiable core [2023-11-23 09:00:20,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:00:20,407 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-23 09:00:20,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 13 [2023-11-23 09:00:20,538 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-23 09:00:20,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-23 09:00:20,604 WARN L876 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| 1))) is different from true [2023-11-23 09:00:20,617 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-23 09:00:20,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-23 09:00:21,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 09:00:21,106 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-23 09:00:21,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-23 09:00:21,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2023-11-23 09:00:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 42 proven. 26 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2023-11-23 09:00:21,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:00:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2023-11-23 09:00:21,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:00:21,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877433491] [2023-11-23 09:00:21,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:00:21,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239313599] [2023-11-23 09:00:21,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239313599] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 09:00:21,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 09:00:21,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [25] total 28 [2023-11-23 09:00:21,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483543835] [2023-11-23 09:00:21,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:00:21,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 09:00:21,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:00:21,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 09:00:21,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=620, Unknown=2, NotChecked=50, Total=756 [2023-11-23 09:00:21,977 INFO L87 Difference]: Start difference. First operand 161 states and 210 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-23 09:00:22,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:00:22,588 INFO L93 Difference]: Finished difference Result 277 states and 364 transitions. [2023-11-23 09:00:22,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 09:00:22,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-11-23 09:00:22,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:00:22,590 INFO L225 Difference]: With dead ends: 277 [2023-11-23 09:00:22,590 INFO L226 Difference]: Without dead ends: 171 [2023-11-23 09:00:22,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 231 SyntacticMatches, 27 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=668, Unknown=3, NotChecked=52, Total=812 [2023-11-23 09:00:22,591 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 13 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 09:00:22,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 574 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 09:00:22,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-23 09:00:22,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 161. [2023-11-23 09:00:22,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 107 states have internal predecessors, (121), 40 states have call successors, (40), 13 states have call predecessors, (40), 16 states have return successors, (47), 40 states have call predecessors, (47), 39 states have call successors, (47) [2023-11-23 09:00:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 208 transitions. [2023-11-23 09:00:22,609 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 208 transitions. Word has length 143 [2023-11-23 09:00:22,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:00:22,610 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 208 transitions. [2023-11-23 09:00:22,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-23 09:00:22,610 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 208 transitions. [2023-11-23 09:00:22,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-23 09:00:22,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:00:22,611 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 7, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:22,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-23 09:00:22,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 09:00:22,820 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:00:22,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:00:22,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1302614022, now seen corresponding path program 1 times [2023-11-23 09:00:22,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:00:22,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657291925] [2023-11-23 09:00:22,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:00:22,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:00:22,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:00:22,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407412965] [2023-11-23 09:00:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:00:22,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:00:22,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:00:22,870 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 09:00:22,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 09:00:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:00:23,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 2604 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 09:00:23,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:00:23,693 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 194 proven. 28 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 09:00:23,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:00:24,228 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-11-23 09:00:24,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:00:24,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657291925] [2023-11-23 09:00:24,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:00:24,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407412965] [2023-11-23 09:00:24,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407412965] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:00:24,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 09:00:24,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2023-11-23 09:00:24,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579893103] [2023-11-23 09:00:24,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 09:00:24,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-23 09:00:24,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:00:24,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-23 09:00:24,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2023-11-23 09:00:24,230 INFO L87 Difference]: Start difference. First operand 161 states and 208 transitions. Second operand has 25 states, 23 states have (on average 3.5652173913043477) internal successors, (82), 25 states have internal predecessors, (82), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-23 09:00:27,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:00:27,228 INFO L93 Difference]: Finished difference Result 291 states and 374 transitions. [2023-11-23 09:00:27,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 09:00:27,228 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.5652173913043477) internal successors, (82), 25 states have internal predecessors, (82), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 147 [2023-11-23 09:00:27,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:00:27,230 INFO L225 Difference]: With dead ends: 291 [2023-11-23 09:00:27,230 INFO L226 Difference]: Without dead ends: 162 [2023-11-23 09:00:27,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2023-11-23 09:00:27,231 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 16 mSDsluCounter, 1954 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2108 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-23 09:00:27,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2108 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-23 09:00:27,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-23 09:00:27,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-11-23 09:00:27,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 105 states have (on average 1.161904761904762) internal successors, (122), 108 states have internal predecessors, (122), 40 states have call successors, (40), 13 states have call predecessors, (40), 16 states have return successors, (47), 40 states have call predecessors, (47), 39 states have call successors, (47) [2023-11-23 09:00:27,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 209 transitions. [2023-11-23 09:00:27,240 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 209 transitions. Word has length 147 [2023-11-23 09:00:27,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:00:27,240 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 209 transitions. [2023-11-23 09:00:27,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.5652173913043477) internal successors, (82), 25 states have internal predecessors, (82), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-23 09:00:27,241 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 209 transitions. [2023-11-23 09:00:27,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-23 09:00:27,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:00:27,242 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 8, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:27,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-23 09:00:27,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 09:00:27,449 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:00:27,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:00:27,449 INFO L85 PathProgramCache]: Analyzing trace with hash -550608683, now seen corresponding path program 2 times [2023-11-23 09:00:27,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:00:27,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424802534] [2023-11-23 09:00:27,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:00:27,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:00:27,617 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:00:27,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835336926] [2023-11-23 09:00:27,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 09:00:27,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:00:27,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:00:27,618 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 09:00:27,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-23 09:00:28,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 09:00:28,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 09:00:28,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-23 09:00:28,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:00:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 194 proven. 36 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 09:00:28,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:00:29,306 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-11-23 09:00:29,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:00:29,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424802534] [2023-11-23 09:00:29,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:00:29,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835336926] [2023-11-23 09:00:29,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835336926] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:00:29,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 09:00:29,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2023-11-23 09:00:29,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216035302] [2023-11-23 09:00:29,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 09:00:29,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-23 09:00:29,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:00:29,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-23 09:00:29,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2023-11-23 09:00:29,308 INFO L87 Difference]: Start difference. First operand 162 states and 209 transitions. Second operand has 27 states, 25 states have (on average 3.36) internal successors, (84), 27 states have internal predecessors, (84), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-23 09:00:31,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:00:31,856 INFO L93 Difference]: Finished difference Result 292 states and 375 transitions. [2023-11-23 09:00:31,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 09:00:31,857 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.36) internal successors, (84), 27 states have internal predecessors, (84), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 148 [2023-11-23 09:00:31,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:00:31,858 INFO L225 Difference]: With dead ends: 292 [2023-11-23 09:00:31,858 INFO L226 Difference]: Without dead ends: 163 [2023-11-23 09:00:31,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992 [2023-11-23 09:00:31,859 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 11 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 09:00:31,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2409 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-23 09:00:31,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-23 09:00:31,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-11-23 09:00:31,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 106 states have (on average 1.1603773584905661) internal successors, (123), 109 states have internal predecessors, (123), 40 states have call successors, (40), 13 states have call predecessors, (40), 16 states have return successors, (47), 40 states have call predecessors, (47), 39 states have call successors, (47) [2023-11-23 09:00:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 210 transitions. [2023-11-23 09:00:31,870 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 210 transitions. Word has length 148 [2023-11-23 09:00:31,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:00:31,870 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 210 transitions. [2023-11-23 09:00:31,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.36) internal successors, (84), 27 states have internal predecessors, (84), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-23 09:00:31,870 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 210 transitions. [2023-11-23 09:00:31,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-23 09:00:31,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:00:31,871 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:31,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-23 09:00:32,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 09:00:32,089 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:00:32,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:00:32,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2129029606, now seen corresponding path program 3 times [2023-11-23 09:00:32,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:00:32,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680528824] [2023-11-23 09:00:32,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:00:32,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:00:32,141 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:00:32,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419033679] [2023-11-23 09:00:32,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 09:00:32,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:00:32,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:00:32,143 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 09:00:32,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process Killed by 15