./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_size_harness_negated.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_size_harness_negated.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 7e7cda06380c02f77d0a6c5166ef0f3fffe5132ec468a9e301a5acde3df3e4d2 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 09:04:14,473 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 09:04:14,510 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 09:04:14,514 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 09:04:14,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 09:04:14,529 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 09:04:14,529 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 09:04:14,530 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 09:04:14,530 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 09:04:14,531 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 09:04:14,531 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 09:04:14,531 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 09:04:14,532 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 09:04:14,532 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 09:04:14,532 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 09:04:14,533 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 09:04:14,533 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 09:04:14,533 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 09:04:14,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 09:04:14,534 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 09:04:14,534 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 09:04:14,535 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 09:04:14,535 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 09:04:14,535 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 09:04:14,535 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 09:04:14,536 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 09:04:14,536 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 09:04:14,536 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 09:04:14,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 09:04:14,537 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 09:04:14,537 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 09:04:14,537 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 09:04:14,537 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 09:04:14,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 09:04:14,538 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 09:04:14,538 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 09:04:14,538 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 09:04:14,538 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 09:04:14,539 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 09:04:14,539 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e7cda06380c02f77d0a6c5166ef0f3fffe5132ec468a9e301a5acde3df3e4d2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 09:04:14,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 09:04:14,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 09:04:14,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 09:04:14,783 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 09:04:14,784 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 09:04:14,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_size_harness_negated.i [2023-11-23 09:04:15,977 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 09:04:16,392 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 09:04:16,392 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_priority_queue_size_harness_negated.i [2023-11-23 09:04:16,424 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00dc785c1/ea5554bb497f4adfa6312bd8139fea62/FLAG26feffe38 [2023-11-23 09:04:16,445 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00dc785c1/ea5554bb497f4adfa6312bd8139fea62 [2023-11-23 09:04:16,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 09:04:16,451 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 09:04:16,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 09:04:16,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 09:04:16,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 09:04:16,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:04:16" (1/1) ... [2023-11-23 09:04:16,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e255033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:16, skipping insertion in model container [2023-11-23 09:04:16,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:04:16" (1/1) ... [2023-11-23 09:04:16,560 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 09:04:16,831 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_size_harness_negated.i[4497,4510] [2023-11-23 09:04:16,840 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_size_harness_negated.i[4557,4570] [2023-11-23 09:04:17,483 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:17,486 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:17,487 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:17,487 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:17,488 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:17,494 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:17,495 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:17,496 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:17,496 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:17,881 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 09:04:17,882 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 09:04:17,883 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 09:04:17,885 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 09:04:17,892 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 09:04:17,892 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 09:04:17,893 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 09:04:17,895 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 09:04:17,896 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 09:04:17,898 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 09:04:17,978 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:17,978 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:18,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 09:04:18,048 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 09:04:18,077 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_priority_queue_size_harness_negated.i[4497,4510] [2023-11-23 09:04:18,079 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_size_harness_negated.i[4557,4570] [2023-11-23 09:04:18,141 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:18,142 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:18,142 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:18,142 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:18,143 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:18,147 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:18,148 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:18,149 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:18,149 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:18,178 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 09:04:18,191 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 09:04:18,192 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 09:04:18,193 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 09:04:18,194 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 09:04:18,195 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 09:04:18,195 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 09:04:18,195 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 09:04:18,196 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 09:04:18,196 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 09:04:18,230 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:18,231 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:04:18,238 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7671-7682] [2023-11-23 09:04:18,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 09:04:18,400 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:18,400 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:18,400 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:18,401 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:18,401 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:18,401 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:18,401 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:18,401 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:18,402 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:18,402 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:18,402 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:18,402 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:18,402 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:18,403 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:18,403 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:04:18,410 INFO L206 MainTranslator]: Completed translation [2023-11-23 09:04:18,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:18 WrapperNode [2023-11-23 09:04:18,411 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 09:04:18,412 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 09:04:18,413 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 09:04:18,413 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 09:04:18,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:18" (1/1) ... [2023-11-23 09:04:18,490 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:18" (1/1) ... [2023-11-23 09:04:18,548 INFO L138 Inliner]: procedures = 688, calls = 1532, calls flagged for inlining = 55, calls inlined = 10, statements flattened = 666 [2023-11-23 09:04:18,554 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 09:04:18,555 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 09:04:18,555 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 09:04:18,555 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 09:04:18,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:18" (1/1) ... [2023-11-23 09:04:18,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:18" (1/1) ... [2023-11-23 09:04:18,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:18" (1/1) ... [2023-11-23 09:04:18,574 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:18" (1/1) ... [2023-11-23 09:04:18,606 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:18" (1/1) ... [2023-11-23 09:04:18,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:18" (1/1) ... [2023-11-23 09:04:18,616 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:18" (1/1) ... [2023-11-23 09:04:18,619 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:18" (1/1) ... [2023-11-23 09:04:18,627 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 09:04:18,628 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 09:04:18,628 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 09:04:18,628 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 09:04:18,629 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:18" (1/1) ... [2023-11-23 09:04:18,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 09:04:18,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:18,680 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 09:04:18,734 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 09:04:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 09:04:18,772 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 09:04:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 09:04:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-23 09:04:18,772 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-23 09:04:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 09:04:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 09:04:18,773 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 09:04:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 09:04:18,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 09:04:18,774 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 09:04:18,774 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 09:04:18,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 09:04:18,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 09:04:18,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 09:04:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 09:04:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-23 09:04:18,775 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-23 09:04:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 09:04:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 09:04:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 09:04:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 09:04:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 09:04:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 09:04:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 09:04:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 09:04:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 09:04:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-23 09:04:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-23 09:04:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-23 09:04:18,777 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-23 09:04:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 09:04:18,777 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 09:04:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 09:04:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 09:04:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 09:04:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 09:04:18,778 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 09:04:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 09:04:18,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 09:04:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 09:04:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2023-11-23 09:04:18,778 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2023-11-23 09:04:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-23 09:04:18,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-23 09:04:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 09:04:19,042 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 09:04:19,044 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 09:04:19,626 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 09:04:19,693 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 09:04:19,693 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 09:04:19,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:04:19 BoogieIcfgContainer [2023-11-23 09:04:19,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 09:04:19,695 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 09:04:19,695 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 09:04:19,698 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 09:04:19,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:04:16" (1/3) ... [2023-11-23 09:04:19,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd4f205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:04:19, skipping insertion in model container [2023-11-23 09:04:19,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:04:18" (2/3) ... [2023-11-23 09:04:19,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd4f205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:04:19, skipping insertion in model container [2023-11-23 09:04:19,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:04:19" (3/3) ... [2023-11-23 09:04:19,700 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_size_harness_negated.i [2023-11-23 09:04:19,714 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 09:04:19,715 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 09:04:19,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 09:04:19,757 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;@a6fec38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 09:04:19,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 09:04:19,761 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 95 states have (on average 1.2736842105263158) internal successors, (121), 96 states have internal predecessors, (121), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-23 09:04:19,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-23 09:04:19,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:19,772 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:19,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:19,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:19,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1717528318, now seen corresponding path program 1 times [2023-11-23 09:04:19,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:19,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068585116] [2023-11-23 09:04:19,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:19,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:20,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:04:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:20,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:04:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:20,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:04:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:20,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 09:04:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:20,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 09:04:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:20,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:04:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:20,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 09:04:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:20,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 09:04:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:20,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:04:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:20,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 09:04:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:20,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 09:04:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:20,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 09:04:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:20,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 09:04:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:20,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 09:04:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:20,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:04:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:20,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 09:04:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:20,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 09:04:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 09:04:20,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:20,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068585116] [2023-11-23 09:04:20,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068585116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:20,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:20,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 09:04:20,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2880064] [2023-11-23 09:04:20,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:20,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 09:04:20,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:20,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 09:04:20,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 09:04:20,596 INFO L87 Difference]: Start difference. First operand has 153 states, 95 states have (on average 1.2736842105263158) internal successors, (121), 96 states have internal predecessors, (121), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 09:04:21,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:21,260 INFO L93 Difference]: Finished difference Result 363 states and 528 transitions. [2023-11-23 09:04:21,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 09:04:21,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 100 [2023-11-23 09:04:21,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:21,270 INFO L225 Difference]: With dead ends: 363 [2023-11-23 09:04:21,270 INFO L226 Difference]: Without dead ends: 216 [2023-11-23 09:04:21,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 09:04:21,284 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 130 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:21,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 217 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 09:04:21,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-23 09:04:21,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 151. [2023-11-23 09:04:21,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 94 states have (on average 1.2446808510638299) internal successors, (117), 95 states have internal predecessors, (117), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-23 09:04:21,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 194 transitions. [2023-11-23 09:04:21,343 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 194 transitions. Word has length 100 [2023-11-23 09:04:21,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:21,343 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 194 transitions. [2023-11-23 09:04:21,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 09:04:21,344 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 194 transitions. [2023-11-23 09:04:21,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-23 09:04:21,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:21,347 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:21,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 09:04:21,348 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:21,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:21,348 INFO L85 PathProgramCache]: Analyzing trace with hash 942304710, now seen corresponding path program 1 times [2023-11-23 09:04:21,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:21,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034617498] [2023-11-23 09:04:21,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:21,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:21,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:04:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:21,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:04:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:21,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:04:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:21,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 09:04:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:21,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 09:04:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:21,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:04:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:21,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 09:04:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:21,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 09:04:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:21,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:04:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:21,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 09:04:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:21,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 09:04:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:21,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 09:04:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:21,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 09:04:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:21,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 09:04:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:21,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:04:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:21,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 09:04:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:21,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 09:04:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:21,868 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 09:04:21,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:21,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034617498] [2023-11-23 09:04:21,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034617498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:21,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:21,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 09:04:21,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94081522] [2023-11-23 09:04:21,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:21,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 09:04:21,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:21,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 09:04:21,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 09:04:21,872 INFO L87 Difference]: Start difference. First operand 151 states and 194 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 09:04:23,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:23,016 INFO L93 Difference]: Finished difference Result 332 states and 451 transitions. [2023-11-23 09:04:23,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 09:04:23,017 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 100 [2023-11-23 09:04:23,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:23,019 INFO L225 Difference]: With dead ends: 332 [2023-11-23 09:04:23,019 INFO L226 Difference]: Without dead ends: 216 [2023-11-23 09:04:23,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-23 09:04:23,021 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 199 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:23,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 421 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 09:04:23,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-23 09:04:23,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 151. [2023-11-23 09:04:23,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 94 states have (on average 1.2340425531914894) internal successors, (116), 95 states have internal predecessors, (116), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-23 09:04:23,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 193 transitions. [2023-11-23 09:04:23,036 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 193 transitions. Word has length 100 [2023-11-23 09:04:23,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:23,037 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 193 transitions. [2023-11-23 09:04:23,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 09:04:23,037 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 193 transitions. [2023-11-23 09:04:23,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-23 09:04:23,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:23,038 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:23,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 09:04:23,039 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:23,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:23,039 INFO L85 PathProgramCache]: Analyzing trace with hash 406043044, now seen corresponding path program 1 times [2023-11-23 09:04:23,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:23,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579782809] [2023-11-23 09:04:23,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:23,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:23,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:04:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:23,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:04:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:23,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:04:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 09:04:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:23,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 09:04:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:23,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:04:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:23,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 09:04:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:23,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 09:04:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:23,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:04:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:23,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 09:04:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:23,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 09:04:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:23,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 09:04:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:23,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 09:04:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:23,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:04:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:23,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 09:04:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:23,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 09:04:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:23,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 09:04:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:23,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 09:04:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:23,629 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-23 09:04:23,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:23,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579782809] [2023-11-23 09:04:23,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579782809] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:04:23,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602402559] [2023-11-23 09:04:23,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:23,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:23,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:23,632 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 09:04:23,673 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 09:04:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:24,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 2326 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 09:04:24,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:24,158 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-23 09:04:24,158 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:04:24,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602402559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:24,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 09:04:24,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-23 09:04:24,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228586339] [2023-11-23 09:04:24,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:24,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 09:04:24,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:24,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 09:04:24,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-11-23 09:04:24,161 INFO L87 Difference]: Start difference. First operand 151 states and 193 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 09:04:24,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:24,556 INFO L93 Difference]: Finished difference Result 286 states and 373 transitions. [2023-11-23 09:04:24,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 09:04:24,557 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 108 [2023-11-23 09:04:24,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:24,558 INFO L225 Difference]: With dead ends: 286 [2023-11-23 09:04:24,558 INFO L226 Difference]: Without dead ends: 153 [2023-11-23 09:04:24,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2023-11-23 09:04:24,559 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 81 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:24,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 900 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 09:04:24,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-23 09:04:24,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2023-11-23 09:04:24,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 95 states have (on average 1.231578947368421) internal successors, (117), 97 states have internal predecessors, (117), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2023-11-23 09:04:24,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 197 transitions. [2023-11-23 09:04:24,582 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 197 transitions. Word has length 108 [2023-11-23 09:04:24,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:24,583 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 197 transitions. [2023-11-23 09:04:24,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 09:04:24,584 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 197 transitions. [2023-11-23 09:04:24,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 09:04:24,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:24,589 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:24,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 09:04:24,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:24,806 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:24,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:24,806 INFO L85 PathProgramCache]: Analyzing trace with hash 407961240, now seen corresponding path program 1 times [2023-11-23 09:04:24,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:24,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010382768] [2023-11-23 09:04:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:24,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:24,871 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:24,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726811816] [2023-11-23 09:04:24,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:24,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:24,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:24,872 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 09:04:24,888 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 09:04:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:25,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 2460 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 09:04:25,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:25,281 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-23 09:04:25,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:04:25,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:25,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010382768] [2023-11-23 09:04:25,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:04:25,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726811816] [2023-11-23 09:04:25,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726811816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:25,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:25,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 09:04:25,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364353996] [2023-11-23 09:04:25,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:25,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 09:04:25,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:25,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 09:04:25,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 09:04:25,284 INFO L87 Difference]: Start difference. First operand 153 states and 197 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 09:04:25,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:25,441 INFO L93 Difference]: Finished difference Result 274 states and 361 transitions. [2023-11-23 09:04:25,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 09:04:25,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 121 [2023-11-23 09:04:25,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:25,442 INFO L225 Difference]: With dead ends: 274 [2023-11-23 09:04:25,443 INFO L226 Difference]: Without dead ends: 158 [2023-11-23 09:04:25,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 118 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 09:04:25,444 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 10 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:25,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 524 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 09:04:25,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-23 09:04:25,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 155. [2023-11-23 09:04:25,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 99 states have internal predecessors, (119), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2023-11-23 09:04:25,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 199 transitions. [2023-11-23 09:04:25,454 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 199 transitions. Word has length 121 [2023-11-23 09:04:25,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:25,455 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 199 transitions. [2023-11-23 09:04:25,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 09:04:25,455 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 199 transitions. [2023-11-23 09:04:25,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 09:04:25,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:25,457 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:25,489 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 09:04:25,673 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,SelfDestructingSolverStorable3 [2023-11-23 09:04:25,674 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:25,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:25,674 INFO L85 PathProgramCache]: Analyzing trace with hash -25767846, now seen corresponding path program 1 times [2023-11-23 09:04:25,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:25,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76171401] [2023-11-23 09:04:25,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:25,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:25,750 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:25,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862519214] [2023-11-23 09:04:25,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:25,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:25,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:25,752 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 09:04:25,776 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 09:04:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:26,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 2465 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 09:04:26,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-23 09:04:26,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:04:26,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:26,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76171401] [2023-11-23 09:04:26,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:04:26,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862519214] [2023-11-23 09:04:26,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862519214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:26,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:26,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 09:04:26,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537331438] [2023-11-23 09:04:26,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:26,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 09:04:26,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:26,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 09:04:26,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 09:04:26,177 INFO L87 Difference]: Start difference. First operand 155 states and 199 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-23 09:04:26,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:26,439 INFO L93 Difference]: Finished difference Result 276 states and 355 transitions. [2023-11-23 09:04:26,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 09:04:26,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 121 [2023-11-23 09:04:26,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:26,440 INFO L225 Difference]: With dead ends: 276 [2023-11-23 09:04:26,440 INFO L226 Difference]: Without dead ends: 155 [2023-11-23 09:04:26,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 09:04:26,441 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 48 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:26,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 762 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 09:04:26,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-23 09:04:26,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2023-11-23 09:04:26,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 97 states have (on average 1.2164948453608246) internal successors, (118), 99 states have internal predecessors, (118), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2023-11-23 09:04:26,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 198 transitions. [2023-11-23 09:04:26,461 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 198 transitions. Word has length 121 [2023-11-23 09:04:26,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:26,462 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 198 transitions. [2023-11-23 09:04:26,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-23 09:04:26,462 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 198 transitions. [2023-11-23 09:04:26,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-23 09:04:26,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:26,463 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:26,481 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 09:04:26,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:26,682 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:26,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:26,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1010339637, now seen corresponding path program 1 times [2023-11-23 09:04:26,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:26,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046231706] [2023-11-23 09:04:26,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:26,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:26,728 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:26,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800577013] [2023-11-23 09:04:26,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:26,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:26,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:26,730 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 09:04:26,754 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 09:04:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:27,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 09:04:27,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 09:04:27,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:04:27,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:27,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046231706] [2023-11-23 09:04:27,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:04:27,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800577013] [2023-11-23 09:04:27,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800577013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:27,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:27,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 09:04:27,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703195797] [2023-11-23 09:04:27,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:27,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 09:04:27,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:27,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 09:04:27,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 09:04:27,187 INFO L87 Difference]: Start difference. First operand 155 states and 198 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-23 09:04:27,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:27,508 INFO L93 Difference]: Finished difference Result 289 states and 372 transitions. [2023-11-23 09:04:27,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 09:04:27,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 137 [2023-11-23 09:04:27,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:27,509 INFO L225 Difference]: With dead ends: 289 [2023-11-23 09:04:27,509 INFO L226 Difference]: Without dead ends: 155 [2023-11-23 09:04:27,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-23 09:04:27,510 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 99 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:27,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1001 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 09:04:27,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-23 09:04:27,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2023-11-23 09:04:27,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 97 states have (on average 1.2164948453608246) internal successors, (118), 99 states have internal predecessors, (118), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 09:04:27,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 197 transitions. [2023-11-23 09:04:27,552 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 197 transitions. Word has length 137 [2023-11-23 09:04:27,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:27,554 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 197 transitions. [2023-11-23 09:04:27,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-23 09:04:27,554 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 197 transitions. [2023-11-23 09:04:27,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-23 09:04:27,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:27,556 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:27,575 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 09:04:27,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:27,773 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:27,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:27,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1922070431, now seen corresponding path program 2 times [2023-11-23 09:04:27,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:27,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811092815] [2023-11-23 09:04:27,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:27,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:27,830 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:27,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281434816] [2023-11-23 09:04:27,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 09:04:27,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:27,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:27,844 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 09:04:27,854 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 09:04:28,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 09:04:28,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 09:04:28,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 1806 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 09:04:28,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-23 09:04:28,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:04:28,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:28,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811092815] [2023-11-23 09:04:28,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:04:28,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281434816] [2023-11-23 09:04:28,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281434816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:28,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:28,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 09:04:28,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493237505] [2023-11-23 09:04:28,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:28,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 09:04:28,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:28,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 09:04:28,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 09:04:28,249 INFO L87 Difference]: Start difference. First operand 155 states and 197 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 09:04:28,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:28,502 INFO L93 Difference]: Finished difference Result 163 states and 205 transitions. [2023-11-23 09:04:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 09:04:28,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2023-11-23 09:04:28,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:28,504 INFO L225 Difference]: With dead ends: 163 [2023-11-23 09:04:28,504 INFO L226 Difference]: Without dead ends: 161 [2023-11-23 09:04:28,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 09:04:28,505 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 5 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:28,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 866 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 09:04:28,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-23 09:04:28,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2023-11-23 09:04:28,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 100 states have (on average 1.21) internal successors, (121), 102 states have internal predecessors, (121), 40 states have call successors, (40), 18 states have call predecessors, (40), 19 states have return successors, (41), 39 states have call predecessors, (41), 39 states have call successors, (41) [2023-11-23 09:04:28,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 202 transitions. [2023-11-23 09:04:28,513 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 202 transitions. Word has length 150 [2023-11-23 09:04:28,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:28,513 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 202 transitions. [2023-11-23 09:04:28,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 09:04:28,514 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 202 transitions. [2023-11-23 09:04:28,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-23 09:04:28,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:28,515 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:28,531 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 09:04:28,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:28,733 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:28,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:28,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1335143491, now seen corresponding path program 3 times [2023-11-23 09:04:28,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:28,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134906071] [2023-11-23 09:04:28,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:28,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:28,794 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:28,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337423463] [2023-11-23 09:04:28,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 09:04:28,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:28,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:28,796 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 09:04:28,798 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 09:04:29,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 09:04:29,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 09:04:29,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 2016 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-23 09:04:29,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:29,372 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-23 09:04:29,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:04:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-23 09:04:29,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:29,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134906071] [2023-11-23 09:04:29,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:04:29,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337423463] [2023-11-23 09:04:29,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337423463] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:04:29,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 09:04:29,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2023-11-23 09:04:29,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830093254] [2023-11-23 09:04:29,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 09:04:29,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 09:04:29,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:29,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 09:04:29,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 09:04:29,543 INFO L87 Difference]: Start difference. First operand 160 states and 202 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 09:04:29,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:29,937 INFO L93 Difference]: Finished difference Result 260 states and 328 transitions. [2023-11-23 09:04:29,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 09:04:29,938 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 163 [2023-11-23 09:04:29,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:29,939 INFO L225 Difference]: With dead ends: 260 [2023-11-23 09:04:29,939 INFO L226 Difference]: Without dead ends: 167 [2023-11-23 09:04:29,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-23 09:04:29,940 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 28 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:29,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 801 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 09:04:29,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-11-23 09:04:29,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165. [2023-11-23 09:04:29,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 103 states have (on average 1.203883495145631) internal successors, (124), 104 states have internal predecessors, (124), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2023-11-23 09:04:29,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 209 transitions. [2023-11-23 09:04:29,979 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 209 transitions. Word has length 163 [2023-11-23 09:04:29,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:29,979 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 209 transitions. [2023-11-23 09:04:29,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 09:04:29,980 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 209 transitions. [2023-11-23 09:04:29,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-23 09:04:29,981 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:29,981 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:29,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-23 09:04:30,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:30,182 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:30,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:30,183 INFO L85 PathProgramCache]: Analyzing trace with hash 584378799, now seen corresponding path program 1 times [2023-11-23 09:04:30,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:30,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041779018] [2023-11-23 09:04:30,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:30,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:30,249 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:30,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322783502] [2023-11-23 09:04:30,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:30,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:30,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:30,251 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 09:04:30,308 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 09:04:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:30,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-23 09:04:30,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:31,008 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 09:04:31,096 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-23 09:04:31,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:04:31,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:31,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041779018] [2023-11-23 09:04:31,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:04:31,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322783502] [2023-11-23 09:04:31,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322783502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:31,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:31,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 09:04:31,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268359064] [2023-11-23 09:04:31,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:31,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 09:04:31,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:31,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 09:04:31,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-23 09:04:31,098 INFO L87 Difference]: Start difference. First operand 165 states and 209 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 5 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-23 09:04:32,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:32,823 INFO L93 Difference]: Finished difference Result 313 states and 403 transitions. [2023-11-23 09:04:32,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 09:04:32,824 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 5 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 176 [2023-11-23 09:04:32,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:32,825 INFO L225 Difference]: With dead ends: 313 [2023-11-23 09:04:32,825 INFO L226 Difference]: Without dead ends: 185 [2023-11-23 09:04:32,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2023-11-23 09:04:32,826 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 97 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:32,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1546 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 09:04:32,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-23 09:04:32,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 178. [2023-11-23 09:04:32,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 115 states have (on average 1.2173913043478262) internal successors, (140), 116 states have internal predecessors, (140), 42 states have call successors, (42), 19 states have call predecessors, (42), 20 states have return successors, (47), 42 states have call predecessors, (47), 41 states have call successors, (47) [2023-11-23 09:04:32,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 229 transitions. [2023-11-23 09:04:32,835 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 229 transitions. Word has length 176 [2023-11-23 09:04:32,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:32,836 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 229 transitions. [2023-11-23 09:04:32,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 5 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-23 09:04:32,836 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 229 transitions. [2023-11-23 09:04:32,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-23 09:04:32,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:32,837 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:32,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 09:04:33,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:33,055 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:33,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:33,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1486745687, now seen corresponding path program 1 times [2023-11-23 09:04:33,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:33,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358463138] [2023-11-23 09:04:33,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:33,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:33,117 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:33,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839517161] [2023-11-23 09:04:33,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:33,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:33,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:33,119 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 09:04:33,120 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 09:04:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:33,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 09:04:33,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:33,771 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 09:04:33,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:04:33,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:33,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358463138] [2023-11-23 09:04:33,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:04:33,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839517161] [2023-11-23 09:04:33,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839517161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:33,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:33,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 09:04:33,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618962532] [2023-11-23 09:04:33,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:33,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 09:04:33,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:33,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 09:04:33,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 09:04:33,775 INFO L87 Difference]: Start difference. First operand 178 states and 229 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 09:04:34,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:34,143 INFO L93 Difference]: Finished difference Result 347 states and 451 transitions. [2023-11-23 09:04:34,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 09:04:34,144 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 178 [2023-11-23 09:04:34,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:34,145 INFO L225 Difference]: With dead ends: 347 [2023-11-23 09:04:34,145 INFO L226 Difference]: Without dead ends: 206 [2023-11-23 09:04:34,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 09:04:34,146 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 21 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:34,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 782 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 09:04:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-23 09:04:34,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 186. [2023-11-23 09:04:34,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 123 states have (on average 1.2195121951219512) internal successors, (150), 124 states have internal predecessors, (150), 42 states have call successors, (42), 19 states have call predecessors, (42), 20 states have return successors, (47), 42 states have call predecessors, (47), 41 states have call successors, (47) [2023-11-23 09:04:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 239 transitions. [2023-11-23 09:04:34,159 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 239 transitions. Word has length 178 [2023-11-23 09:04:34,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:34,159 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 239 transitions. [2023-11-23 09:04:34,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 09:04:34,159 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 239 transitions. [2023-11-23 09:04:34,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-23 09:04:34,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:34,161 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:34,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-23 09:04:34,384 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,SelfDestructingSolverStorable9 [2023-11-23 09:04:34,388 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:34,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:34,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1241463659, now seen corresponding path program 1 times [2023-11-23 09:04:34,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:34,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526029245] [2023-11-23 09:04:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:34,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:34,449 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:34,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213080030] [2023-11-23 09:04:34,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:34,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:34,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:34,451 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 09:04:34,476 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 09:04:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:34,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 09:04:34,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:34,981 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 09:04:34,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:04:34,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:34,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526029245] [2023-11-23 09:04:34,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:04:34,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213080030] [2023-11-23 09:04:34,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213080030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:34,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:34,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 09:04:34,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194194246] [2023-11-23 09:04:34,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:34,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 09:04:34,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:34,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 09:04:34,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 09:04:34,984 INFO L87 Difference]: Start difference. First operand 186 states and 239 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 09:04:35,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:35,141 INFO L93 Difference]: Finished difference Result 343 states and 443 transitions. [2023-11-23 09:04:35,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 09:04:35,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 178 [2023-11-23 09:04:35,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:35,142 INFO L225 Difference]: With dead ends: 343 [2023-11-23 09:04:35,142 INFO L226 Difference]: Without dead ends: 194 [2023-11-23 09:04:35,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 175 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 09:04:35,143 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 3 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:35,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 518 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 09:04:35,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-23 09:04:35,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 190. [2023-11-23 09:04:35,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 127 states have (on average 1.2125984251968505) internal successors, (154), 128 states have internal predecessors, (154), 42 states have call successors, (42), 19 states have call predecessors, (42), 20 states have return successors, (47), 42 states have call predecessors, (47), 41 states have call successors, (47) [2023-11-23 09:04:35,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 243 transitions. [2023-11-23 09:04:35,152 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 243 transitions. Word has length 178 [2023-11-23 09:04:35,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:35,152 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 243 transitions. [2023-11-23 09:04:35,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 09:04:35,153 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 243 transitions. [2023-11-23 09:04:35,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-23 09:04:35,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:35,154 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:35,174 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 09:04:35,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:35,371 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:35,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:35,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1911001171, now seen corresponding path program 1 times [2023-11-23 09:04:35,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:35,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215974519] [2023-11-23 09:04:35,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:35,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:35,422 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:35,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148199558] [2023-11-23 09:04:35,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:35,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:35,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:35,424 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 09:04:35,450 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 09:04:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:36,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 09:04:36,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:36,053 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 09:04:36,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:04:36,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:04:36,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215974519] [2023-11-23 09:04:36,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:04:36,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148199558] [2023-11-23 09:04:36,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148199558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:04:36,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:04:36,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 09:04:36,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184921026] [2023-11-23 09:04:36,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:04:36,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 09:04:36,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:04:36,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 09:04:36,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 09:04:36,056 INFO L87 Difference]: Start difference. First operand 190 states and 243 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 09:04:36,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:04:36,424 INFO L93 Difference]: Finished difference Result 348 states and 455 transitions. [2023-11-23 09:04:36,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 09:04:36,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 178 [2023-11-23 09:04:36,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:04:36,426 INFO L225 Difference]: With dead ends: 348 [2023-11-23 09:04:36,426 INFO L226 Difference]: Without dead ends: 195 [2023-11-23 09:04:36,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 09:04:36,427 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 10 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:04:36,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 649 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 09:04:36,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-23 09:04:36,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2023-11-23 09:04:36,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 128 states have (on average 1.2109375) internal successors, (155), 129 states have internal predecessors, (155), 42 states have call successors, (42), 19 states have call predecessors, (42), 20 states have return successors, (47), 42 states have call predecessors, (47), 41 states have call successors, (47) [2023-11-23 09:04:36,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 244 transitions. [2023-11-23 09:04:36,438 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 244 transitions. Word has length 178 [2023-11-23 09:04:36,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:04:36,440 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 244 transitions. [2023-11-23 09:04:36,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 09:04:36,440 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 244 transitions. [2023-11-23 09:04:36,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-23 09:04:36,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:04:36,442 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:04:36,478 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 09:04:36,662 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,SelfDestructingSolverStorable11 [2023-11-23 09:04:36,662 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:04:36,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:04:36,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1882500881, now seen corresponding path program 1 times [2023-11-23 09:04:36,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:04:36,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848554144] [2023-11-23 09:04:36,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:36,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:04:36,727 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:04:36,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40470341] [2023-11-23 09:04:36,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:04:36,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:04:36,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:04:36,729 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 09:04:36,772 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 09:04:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:04:57,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 162 conjunts are in the unsatisfiable core [2023-11-23 09:04:57,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:04:57,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-23 09:04:58,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-23 09:04:58,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-23 09:05:00,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-23 09:05:00,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-23 09:05:02,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2023-11-23 09:05:02,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-23 09:05:02,254 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 09:05:02,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-11-23 09:05:57,851 INFO L349 Elim1Store]: treesize reduction 440, result has 0.2 percent of original size [2023-11-23 09:05:57,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 397 treesize of output 1 [2023-11-23 09:05:57,854 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 118 proven. 23 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-23 09:05:57,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:06:00,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:06:00,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848554144] [2023-11-23 09:06:00,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:06:00,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40470341] [2023-11-23 09:06:00,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40470341] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:06:00,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 09:06:00,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2023-11-23 09:06:00,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417509215] [2023-11-23 09:06:00,271 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 09:06:00,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-23 09:06:00,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:06:00,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-23 09:06:00,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1812, Unknown=18, NotChecked=0, Total=1980 [2023-11-23 09:06:00,274 INFO L87 Difference]: Start difference. First operand 191 states and 244 transitions. Second operand has 39 states, 32 states have (on average 3.125) internal successors, (100), 34 states have internal predecessors, (100), 13 states have call successors, (27), 7 states have call predecessors, (27), 13 states have return successors, (25), 12 states have call predecessors, (25), 13 states have call successors, (25) [2023-11-23 09:06:04,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:06:08,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:06:19,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:06:21,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:06:23,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:06:26,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:06:28,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:06:30,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:06:50,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:06:52,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:06:55,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:06:57,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:06:59,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:07:02,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:07:04,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:07:06,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:07:09,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:07:11,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:07:13,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:07:17,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:07:46,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:07:48,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:07:50,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:07:53,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:07:55,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:07:57,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:07:59,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:08:06,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:08:08,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:08:17,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:08:19,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:08:21,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:08:30,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:08:32,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:08:35,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:08:38,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:08:40,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:08:42,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:08:44,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:08:46,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:08:48,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] Killed by 15