./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_static_harness_negated.i --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_static_harness_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 45f64669ebfdc84a4dd973a459cc28f726b5fde0dd48f411e7b69c6e90470488 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:35:25,128 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:35:25,205 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 07:35:25,214 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:35:25,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:35:25,244 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:35:25,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:35:25,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:35:25,245 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:35:25,248 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:35:25,248 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:35:25,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:35:25,249 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:35:25,250 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:35:25,251 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:35:25,251 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:35:25,251 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:35:25,251 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 07:35:25,251 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:35:25,252 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:35:25,252 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:35:25,252 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:35:25,252 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:35:25,253 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:35:25,253 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:35:25,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:35:25,253 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:35:25,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:35:25,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:35:25,254 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:35:25,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:35:25,255 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:35:25,255 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 07:35:25,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 07:35:25,256 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:35:25,256 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:35:25,256 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:35:25,256 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:35:25,256 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:35:25,257 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45f64669ebfdc84a4dd973a459cc28f726b5fde0dd48f411e7b69c6e90470488 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 07:35:25,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:35:25,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:35:25,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:35:25,486 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:35:25,486 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:35:25,487 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_static_harness_negated.i [2023-11-23 07:35:26,490 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:35:26,836 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:35:26,839 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_static_harness_negated.i [2023-11-23 07:35:26,871 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66aa8be30/3fe5ecb1f6a84ca49de63c93f1a8723b/FLAG252bbab3c [2023-11-23 07:35:26,888 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66aa8be30/3fe5ecb1f6a84ca49de63c93f1a8723b [2023-11-23 07:35:26,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:35:26,892 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:35:26,894 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:35:26,895 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:35:26,899 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:35:26,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:35:26" (1/1) ... [2023-11-23 07:35:26,900 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54028408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:35:26, skipping insertion in model container [2023-11-23 07:35:26,900 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:35:26" (1/1) ... [2023-11-23 07:35:27,038 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:35:27,208 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4504,4517] [2023-11-23 07:35:27,216 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4564,4577] [2023-11-23 07:35:27,830 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:27,831 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:27,831 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:27,831 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:27,832 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:27,838 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:27,839 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:27,840 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:27,844 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:28,044 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:35:28,045 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:35:28,045 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:35:28,047 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:35:28,051 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:35:28,052 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:35:28,052 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:35:28,052 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:35:28,053 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:35:28,053 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:35:28,140 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:28,140 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:28,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:35:28,190 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:35:28,199 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4504,4517] [2023-11-23 07:35:28,202 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4564,4577] [2023-11-23 07:35:28,256 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:28,257 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:28,257 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:28,258 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:28,258 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:28,267 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:28,268 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:28,270 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:28,271 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:28,309 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:35:28,310 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:35:28,311 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:35:28,311 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:35:28,313 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:35:28,314 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:35:28,314 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:35:28,314 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:35:28,315 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:35:28,315 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:35:28,356 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:28,357 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:35:28,364 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7671-7682] [2023-11-23 07:35:28,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:35:28,543 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:35:28,543 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:35:28,543 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:35:28,543 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:35:28,544 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:35:28,544 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:35:28,544 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:35:28,544 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:35:28,545 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:35:28,545 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:35:28,545 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:35:28,545 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:35:28,545 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:35:28,545 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:35:28,545 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:35:28,560 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:35:28,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:35:28 WrapperNode [2023-11-23 07:35:28,560 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:35:28,561 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:35:28,563 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:35:28,563 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:35:28,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:35:28" (1/1) ... [2023-11-23 07:35:28,679 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:35:28" (1/1) ... [2023-11-23 07:35:28,729 INFO L138 Inliner]: procedures = 688, calls = 1510, calls flagged for inlining = 54, calls inlined = 9, statements flattened = 652 [2023-11-23 07:35:28,738 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:35:28,739 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:35:28,739 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:35:28,739 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:35:28,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:35:28" (1/1) ... [2023-11-23 07:35:28,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:35:28" (1/1) ... [2023-11-23 07:35:28,758 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:35:28" (1/1) ... [2023-11-23 07:35:28,824 INFO L188 MemorySlicer]: Split 283 memory accesses to 6 slices as follows [2, 5, 236, 2, 35, 3]. 83 percent of accesses are in the largest equivalence class. The 247 initializations are split as follows [2, 5, 236, 0, 1, 3]. The 7 writes are split as follows [0, 0, 0, 0, 7, 0]. [2023-11-23 07:35:28,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:35:28" (1/1) ... [2023-11-23 07:35:28,825 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:35:28" (1/1) ... [2023-11-23 07:35:28,857 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:35:28" (1/1) ... [2023-11-23 07:35:28,865 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:35:28" (1/1) ... [2023-11-23 07:35:28,883 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:35:28" (1/1) ... [2023-11-23 07:35:28,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:35:28" (1/1) ... [2023-11-23 07:35:28,894 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:35:28,903 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:35:28,903 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:35:28,904 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:35:28,904 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:35:28" (1/1) ... [2023-11-23 07:35:28,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:35:28,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:35:28,967 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 07:35:29,001 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 07:35:29,026 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 07:35:29,026 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 07:35:29,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 07:35:29,026 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 07:35:29,027 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 07:35:29,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 07:35:29,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 07:35:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 07:35:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 07:35:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 07:35:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 07:35:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 07:35:29,028 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 07:35:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:35:29,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:35:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 07:35:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:35:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 07:35:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 07:35:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 07:35:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 07:35:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 07:35:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 07:35:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:35:29,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:35:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 07:35:29,030 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 07:35:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 07:35:29,030 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 07:35:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-23 07:35:29,031 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-23 07:35:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:35:29,031 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:35:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 07:35:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 07:35:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 07:35:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 07:35:29,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 07:35:29,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 07:35:29,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 07:35:29,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 07:35:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 07:35:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 07:35:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 07:35:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 07:35:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 07:35:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 07:35:29,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 07:35:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 07:35:29,033 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 07:35:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 07:35:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 07:35:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 07:35:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 07:35:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 07:35:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 07:35:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-23 07:35:29,035 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-23 07:35:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-23 07:35:29,035 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-23 07:35:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 07:35:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 07:35:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 07:35:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 07:35:29,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 07:35:29,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 07:35:29,243 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:35:29,245 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:35:29,807 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:35:29,889 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:35:29,889 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 07:35:29,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:35:29 BoogieIcfgContainer [2023-11-23 07:35:29,890 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:35:29,891 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:35:29,892 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:35:29,894 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:35:29,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:35:26" (1/3) ... [2023-11-23 07:35:29,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53956cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:35:29, skipping insertion in model container [2023-11-23 07:35:29,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:35:28" (2/3) ... [2023-11-23 07:35:29,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53956cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:35:29, skipping insertion in model container [2023-11-23 07:35:29,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:35:29" (3/3) ... [2023-11-23 07:35:29,900 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_static_harness_negated.i [2023-11-23 07:35:29,914 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:35:29,914 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 07:35:29,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:35:29,971 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;@2d0839fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:35:29,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 07:35:29,975 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 80 states have (on average 1.2875) internal successors, (103), 80 states have internal predecessors, (103), 39 states have call successors, (39), 12 states have call predecessors, (39), 12 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-23 07:35:29,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-23 07:35:29,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:35:29,992 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:35:29,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:35:29,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:35:29,999 INFO L85 PathProgramCache]: Analyzing trace with hash 980783459, now seen corresponding path program 1 times [2023-11-23 07:35:30,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:35:30,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635646544] [2023-11-23 07:35:30,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:35:30,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:35:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:35:30,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:35:30,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635646544] [2023-11-23 07:35:30,366 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 07:35:30,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030776024] [2023-11-23 07:35:30,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:35:30,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:35:30,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:35:30,368 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 07:35:30,424 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 07:35:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:35:30,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 2365 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 07:35:30,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:35:30,916 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2023-11-23 07:35:30,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:35:30,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030776024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:35:30,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:35:30,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 07:35:30,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85619153] [2023-11-23 07:35:30,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:35:30,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 07:35:30,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:35:30,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 07:35:30,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 07:35:30,950 INFO L87 Difference]: Start difference. First operand has 132 states, 80 states have (on average 1.2875) internal successors, (103), 80 states have internal predecessors, (103), 39 states have call successors, (39), 12 states have call predecessors, (39), 12 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 07:35:31,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:35:31,129 INFO L93 Difference]: Finished difference Result 262 states and 389 transitions. [2023-11-23 07:35:31,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 07:35:31,131 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 104 [2023-11-23 07:35:31,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:35:31,137 INFO L225 Difference]: With dead ends: 262 [2023-11-23 07:35:31,138 INFO L226 Difference]: Without dead ends: 129 [2023-11-23 07:35:31,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 07:35:31,143 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:35:31,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:35:31,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-23 07:35:31,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-11-23 07:35:31,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 78 states have internal predecessors, (94), 39 states have call successors, (39), 12 states have call predecessors, (39), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-23 07:35:31,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 171 transitions. [2023-11-23 07:35:31,180 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 171 transitions. Word has length 104 [2023-11-23 07:35:31,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:35:31,180 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 171 transitions. [2023-11-23 07:35:31,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 07:35:31,181 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 171 transitions. [2023-11-23 07:35:31,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-23 07:35:31,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:35:31,183 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:35:31,201 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 07:35:31,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 07:35:31,397 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:35:31,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:35:31,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1801594970, now seen corresponding path program 1 times [2023-11-23 07:35:31,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:35:31,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191538805] [2023-11-23 07:35:31,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:35:31,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:35:31,513 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:35:31,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923101967] [2023-11-23 07:35:31,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:35:31,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:35:31,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:35:31,517 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 07:35:31,528 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 07:35:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:35:31,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:35:31,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:35:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2023-11-23 07:35:32,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:35:32,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:35:32,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191538805] [2023-11-23 07:35:32,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:35:32,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923101967] [2023-11-23 07:35:32,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923101967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:35:32,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:35:32,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 07:35:32,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031408883] [2023-11-23 07:35:32,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:35:32,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 07:35:32,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:35:32,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 07:35:32,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:35:32,064 INFO L87 Difference]: Start difference. First operand 129 states and 171 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 07:35:32,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:35:32,767 INFO L93 Difference]: Finished difference Result 217 states and 284 transitions. [2023-11-23 07:35:32,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 07:35:32,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 119 [2023-11-23 07:35:32,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:35:32,770 INFO L225 Difference]: With dead ends: 217 [2023-11-23 07:35:32,771 INFO L226 Difference]: Without dead ends: 131 [2023-11-23 07:35:32,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:35:32,772 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 37 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:35:32,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 757 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 07:35:32,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-23 07:35:32,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-11-23 07:35:32,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 78 states have (on average 1.2179487179487178) internal successors, (95), 80 states have internal predecessors, (95), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 07:35:32,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 174 transitions. [2023-11-23 07:35:32,783 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 174 transitions. Word has length 119 [2023-11-23 07:35:32,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:35:32,784 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 174 transitions. [2023-11-23 07:35:32,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 07:35:32,785 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 174 transitions. [2023-11-23 07:35:32,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-23 07:35:32,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:35:32,786 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:35:32,805 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 07:35:33,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 07:35:33,003 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:35:33,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:35:33,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1097392824, now seen corresponding path program 1 times [2023-11-23 07:35:33,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:35:33,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640792770] [2023-11-23 07:35:33,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:35:33,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:35:33,081 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:35:33,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1408536135] [2023-11-23 07:35:33,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:35:33,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:35:33,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:35:33,083 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 07:35:33,107 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 07:35:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:35:33,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-23 07:35:33,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:35:33,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:35:33,747 WARN L876 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (<= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| |c_aws_mul_size_checked_#in~r#1.offset|) (= |c_#memory_$Pointer$#4.base| (store |c_old(#memory_$Pointer$#4.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$#4.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$#4.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|)))))) is different from true [2023-11-23 07:35:34,008 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2023-11-23 07:35:34,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:35:34,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:35:34,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640792770] [2023-11-23 07:35:34,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:35:34,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408536135] [2023-11-23 07:35:34,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408536135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:35:34,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:35:34,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 07:35:34,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668535138] [2023-11-23 07:35:34,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:35:34,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 07:35:34,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:35:34,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 07:35:34,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=203, Unknown=1, NotChecked=28, Total=272 [2023-11-23 07:35:34,018 INFO L87 Difference]: Start difference. First operand 131 states and 174 transitions. Second operand has 17 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 8 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) [2023-11-23 07:35:37,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:35:37,532 INFO L93 Difference]: Finished difference Result 288 states and 399 transitions. [2023-11-23 07:35:37,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 07:35:37,534 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 8 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) Word has length 132 [2023-11-23 07:35:37,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:35:37,536 INFO L225 Difference]: With dead ends: 288 [2023-11-23 07:35:37,536 INFO L226 Difference]: Without dead ends: 200 [2023-11-23 07:35:37,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=629, Unknown=1, NotChecked=52, Total=812 [2023-11-23 07:35:37,538 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 114 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 334 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:35:37,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 999 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1636 Invalid, 0 Unknown, 334 Unchecked, 3.2s Time] [2023-11-23 07:35:37,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-23 07:35:37,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 132. [2023-11-23 07:35:37,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 79 states have (on average 1.2151898734177216) internal successors, (96), 81 states have internal predecessors, (96), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 07:35:37,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 175 transitions. [2023-11-23 07:35:37,561 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 175 transitions. Word has length 132 [2023-11-23 07:35:37,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:35:37,562 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 175 transitions. [2023-11-23 07:35:37,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 8 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) [2023-11-23 07:35:37,562 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 175 transitions. [2023-11-23 07:35:37,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-23 07:35:37,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:35:37,564 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:35:37,585 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 07:35:37,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:35:37,772 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:35:37,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:35:37,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1386496994, now seen corresponding path program 1 times [2023-11-23 07:35:37,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:35:37,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241264179] [2023-11-23 07:35:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:35:37,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:35:37,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:35:37,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993332599] [2023-11-23 07:35:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:35:37,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:35:37,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:35:37,860 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 07:35:37,867 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 07:35:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:35:38,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 07:35:38,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:35:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 07:35:38,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:35:38,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:35:38,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241264179] [2023-11-23 07:35:38,393 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:35:38,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993332599] [2023-11-23 07:35:38,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993332599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:35:38,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:35:38,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:35:38,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492737209] [2023-11-23 07:35:38,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:35:38,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:35:38,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:35:38,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:35:38,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:35:38,409 INFO L87 Difference]: Start difference. First operand 132 states and 175 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-23 07:35:39,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:35:39,196 INFO L93 Difference]: Finished difference Result 238 states and 312 transitions. [2023-11-23 07:35:39,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:35:39,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 134 [2023-11-23 07:35:39,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:35:39,198 INFO L225 Difference]: With dead ends: 238 [2023-11-23 07:35:39,198 INFO L226 Difference]: Without dead ends: 132 [2023-11-23 07:35:39,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:35:39,199 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 9 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:35:39,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 759 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 07:35:39,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-23 07:35:39,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-11-23 07:35:39,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 81 states have internal predecessors, (95), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 07:35:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 174 transitions. [2023-11-23 07:35:39,210 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 174 transitions. Word has length 134 [2023-11-23 07:35:39,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:35:39,210 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 174 transitions. [2023-11-23 07:35:39,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-23 07:35:39,210 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 174 transitions. [2023-11-23 07:35:39,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-23 07:35:39,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:35:39,212 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:35:39,231 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 07:35:39,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:35:39,431 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:35:39,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:35:39,432 INFO L85 PathProgramCache]: Analyzing trace with hash -786236918, now seen corresponding path program 1 times [2023-11-23 07:35:39,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:35:39,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896901458] [2023-11-23 07:35:39,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:35:39,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:35:39,483 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:35:39,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634854436] [2023-11-23 07:35:39,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:35:39,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:35:39,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:35:39,485 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 07:35:39,508 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 07:35:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:35:39,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 07:35:39,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:35:39,990 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 07:35:39,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:35:39,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:35:39,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896901458] [2023-11-23 07:35:39,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:35:39,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634854436] [2023-11-23 07:35:39,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634854436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:35:39,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:35:39,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 07:35:39,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542348859] [2023-11-23 07:35:39,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:35:39,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 07:35:39,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:35:39,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 07:35:39,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 07:35:39,993 INFO L87 Difference]: Start difference. First operand 132 states and 174 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 07:35:40,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:35:40,335 INFO L93 Difference]: Finished difference Result 240 states and 314 transitions. [2023-11-23 07:35:40,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 07:35:40,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 136 [2023-11-23 07:35:40,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:35:40,337 INFO L225 Difference]: With dead ends: 240 [2023-11-23 07:35:40,337 INFO L226 Difference]: Without dead ends: 133 [2023-11-23 07:35:40,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 07:35:40,338 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:35:40,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 312 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:35:40,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-23 07:35:40,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-23 07:35:40,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 80 states have (on average 1.2) internal successors, (96), 82 states have internal predecessors, (96), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 07:35:40,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 175 transitions. [2023-11-23 07:35:40,347 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 175 transitions. Word has length 136 [2023-11-23 07:35:40,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:35:40,348 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 175 transitions. [2023-11-23 07:35:40,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 07:35:40,348 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 175 transitions. [2023-11-23 07:35:40,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-23 07:35:40,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:35:40,350 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:35:40,367 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 07:35:40,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:35:40,567 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:35:40,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:35:40,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1137686006, now seen corresponding path program 1 times [2023-11-23 07:35:40,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:35:40,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584037897] [2023-11-23 07:35:40,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:35:40,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:35:40,643 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:35:40,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999651274] [2023-11-23 07:35:40,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:35:40,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:35:40,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:35:40,645 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 07:35:40,664 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 07:35:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:35:41,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 2731 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 07:35:41,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:35:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 194 proven. 1 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 07:35:41,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:35:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-11-23 07:35:41,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:35:41,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584037897] [2023-11-23 07:35:41,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:35:41,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999651274] [2023-11-23 07:35:41,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999651274] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:35:41,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:35:41,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-23 07:35:41,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774238653] [2023-11-23 07:35:41,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:35:41,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 07:35:41,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:35:41,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 07:35:41,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-23 07:35:41,433 INFO L87 Difference]: Start difference. First operand 133 states and 175 transitions. Second operand has 13 states, 11 states have (on average 5.818181818181818) internal successors, (64), 13 states have internal predecessors, (64), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 07:35:42,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:35:42,307 INFO L93 Difference]: Finished difference Result 241 states and 315 transitions. [2023-11-23 07:35:42,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:35:42,308 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.818181818181818) internal successors, (64), 13 states have internal predecessors, (64), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 137 [2023-11-23 07:35:42,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:35:42,309 INFO L225 Difference]: With dead ends: 241 [2023-11-23 07:35:42,309 INFO L226 Difference]: Without dead ends: 134 [2023-11-23 07:35:42,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-11-23 07:35:42,310 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 15 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:35:42,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1359 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 07:35:42,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-23 07:35:42,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2023-11-23 07:35:42,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 83 states have internal predecessors, (97), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 07:35:42,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 176 transitions. [2023-11-23 07:35:42,319 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 176 transitions. Word has length 137 [2023-11-23 07:35:42,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:35:42,320 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 176 transitions. [2023-11-23 07:35:42,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.818181818181818) internal successors, (64), 13 states have internal predecessors, (64), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 07:35:42,320 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 176 transitions. [2023-11-23 07:35:42,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-23 07:35:42,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:35:42,322 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:35:42,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 07:35:42,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:35:42,541 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:35:42,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:35:42,542 INFO L85 PathProgramCache]: Analyzing trace with hash 649754506, now seen corresponding path program 2 times [2023-11-23 07:35:42,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:35:42,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121537859] [2023-11-23 07:35:42,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:35:42,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:35:42,595 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:35:42,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881197449] [2023-11-23 07:35:42,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:35:42,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:35:42,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:35:42,613 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 07:35:42,624 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 07:35:43,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:35:43,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:35:43,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 07:35:43,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:35:43,323 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 194 proven. 3 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 07:35:43,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:35:43,613 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-11-23 07:35:43,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:35:43,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121537859] [2023-11-23 07:35:43,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:35:43,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881197449] [2023-11-23 07:35:43,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881197449] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:35:43,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:35:43,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-23 07:35:43,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102174669] [2023-11-23 07:35:43,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:35:43,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 07:35:43,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:35:43,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 07:35:43,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-23 07:35:43,620 INFO L87 Difference]: Start difference. First operand 134 states and 176 transitions. Second operand has 15 states, 13 states have (on average 5.076923076923077) internal successors, (66), 15 states have internal predecessors, (66), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 07:35:44,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:35:44,851 INFO L93 Difference]: Finished difference Result 242 states and 316 transitions. [2023-11-23 07:35:44,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 07:35:44,851 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.076923076923077) internal successors, (66), 15 states have internal predecessors, (66), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 138 [2023-11-23 07:35:44,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:35:44,852 INFO L225 Difference]: With dead ends: 242 [2023-11-23 07:35:44,852 INFO L226 Difference]: Without dead ends: 135 [2023-11-23 07:35:44,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-11-23 07:35:44,853 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 11 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:35:44,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1056 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 07:35:44,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-23 07:35:44,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2023-11-23 07:35:44,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 82 states have (on average 1.1951219512195121) internal successors, (98), 84 states have internal predecessors, (98), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 07:35:44,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 177 transitions. [2023-11-23 07:35:44,860 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 177 transitions. Word has length 138 [2023-11-23 07:35:44,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:35:44,861 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 177 transitions. [2023-11-23 07:35:44,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.076923076923077) internal successors, (66), 15 states have internal predecessors, (66), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 07:35:44,861 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 177 transitions. [2023-11-23 07:35:44,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-23 07:35:44,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:35:44,862 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:35:44,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-23 07:35:45,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:35:45,063 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:35:45,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:35:45,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1591220106, now seen corresponding path program 3 times [2023-11-23 07:35:45,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:35:45,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756577709] [2023-11-23 07:35:45,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:35:45,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:35:45,119 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:35:45,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373391940] [2023-11-23 07:35:45,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 07:35:45,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:35:45,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:35:45,121 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 07:35:45,164 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 07:35:52,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-11-23 07:35:52,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:35:52,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 07:35:52,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:35:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 194 proven. 6 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 07:35:53,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:35:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-11-23 07:35:53,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:35:53,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756577709] [2023-11-23 07:35:53,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:35:53,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373391940] [2023-11-23 07:35:53,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373391940] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:35:53,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:35:53,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-11-23 07:35:53,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502023645] [2023-11-23 07:35:53,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:35:53,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 07:35:53,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:35:53,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 07:35:53,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:35:53,419 INFO L87 Difference]: Start difference. First operand 135 states and 177 transitions. Second operand has 17 states, 15 states have (on average 4.533333333333333) internal successors, (68), 17 states have internal predecessors, (68), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 07:35:54,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:35:54,781 INFO L93 Difference]: Finished difference Result 243 states and 317 transitions. [2023-11-23 07:35:54,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 07:35:54,781 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.533333333333333) internal successors, (68), 17 states have internal predecessors, (68), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 139 [2023-11-23 07:35:54,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:35:54,782 INFO L225 Difference]: With dead ends: 243 [2023-11-23 07:35:54,782 INFO L226 Difference]: Without dead ends: 136 [2023-11-23 07:35:54,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-11-23 07:35:54,783 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 11 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:35:54,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1810 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 07:35:54,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-23 07:35:54,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2023-11-23 07:35:54,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 85 states have internal predecessors, (99), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 07:35:54,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 178 transitions. [2023-11-23 07:35:54,790 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 178 transitions. Word has length 139 [2023-11-23 07:35:54,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:35:54,790 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 178 transitions. [2023-11-23 07:35:54,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.533333333333333) internal successors, (68), 17 states have internal predecessors, (68), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 07:35:54,791 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 178 transitions. [2023-11-23 07:35:54,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-23 07:35:54,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:35:54,792 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:35:54,812 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 07:35:55,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-23 07:35:55,008 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:35:55,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:35:55,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1953010954, now seen corresponding path program 4 times [2023-11-23 07:35:55,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:35:55,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255165515] [2023-11-23 07:35:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:35:55,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:35:55,107 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:35:55,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731983671] [2023-11-23 07:35:55,107 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 07:35:55,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:35:55,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:35:55,109 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 07:35:55,128 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 07:35:55,692 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 07:35:55,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:35:55,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 2788 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 07:35:55,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:35:55,815 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 194 proven. 10 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 07:35:55,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:35:56,159 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-11-23 07:35:56,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:35:56,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255165515] [2023-11-23 07:35:56,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:35:56,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731983671] [2023-11-23 07:35:56,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731983671] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:35:56,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:35:56,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-11-23 07:35:56,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518831131] [2023-11-23 07:35:56,162 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:35:56,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-23 07:35:56,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:35:56,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-23 07:35:56,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-11-23 07:35:56,165 INFO L87 Difference]: Start difference. First operand 136 states and 178 transitions. Second operand has 19 states, 17 states have (on average 4.117647058823529) internal successors, (70), 19 states have internal predecessors, (70), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 07:35:57,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:35:57,221 INFO L93 Difference]: Finished difference Result 244 states and 318 transitions. [2023-11-23 07:35:57,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 07:35:57,222 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.117647058823529) internal successors, (70), 19 states have internal predecessors, (70), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 140 [2023-11-23 07:35:57,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:35:57,223 INFO L225 Difference]: With dead ends: 244 [2023-11-23 07:35:57,223 INFO L226 Difference]: Without dead ends: 137 [2023-11-23 07:35:57,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2023-11-23 07:35:57,224 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 12 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:35:57,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1356 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 07:35:57,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-23 07:35:57,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-11-23 07:35:57,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 86 states have internal predecessors, (100), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 07:35:57,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 179 transitions. [2023-11-23 07:35:57,230 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 179 transitions. Word has length 140 [2023-11-23 07:35:57,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:35:57,230 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 179 transitions. [2023-11-23 07:35:57,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.117647058823529) internal successors, (70), 19 states have internal predecessors, (70), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 07:35:57,230 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 179 transitions. [2023-11-23 07:35:57,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-23 07:35:57,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:35:57,231 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:35:57,255 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 07:35:57,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:35:57,449 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:35:57,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:35:57,449 INFO L85 PathProgramCache]: Analyzing trace with hash 155024118, now seen corresponding path program 5 times [2023-11-23 07:35:57,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:35:57,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755365851] [2023-11-23 07:35:57,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:35:57,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:35:57,505 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:35:57,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589071200] [2023-11-23 07:35:57,506 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-23 07:35:57,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:35:57,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:35:57,518 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 07:35:57,519 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 07:35:58,169 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-11-23 07:35:58,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:35:58,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 07:35:58,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:35:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 194 proven. 15 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 07:35:58,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:35:58,710 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-11-23 07:35:58,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:35:58,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755365851] [2023-11-23 07:35:58,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:35:58,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589071200] [2023-11-23 07:35:58,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589071200] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:35:58,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:35:58,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2023-11-23 07:35:58,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138135213] [2023-11-23 07:35:58,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:35:58,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-23 07:35:58,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:35:58,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-23 07:35:58,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-11-23 07:35:58,714 INFO L87 Difference]: Start difference. First operand 137 states and 179 transitions. Second operand has 21 states, 19 states have (on average 3.789473684210526) internal successors, (72), 21 states have internal predecessors, (72), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 07:36:00,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:36:00,158 INFO L93 Difference]: Finished difference Result 245 states and 319 transitions. [2023-11-23 07:36:00,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 07:36:00,158 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.789473684210526) internal successors, (72), 21 states have internal predecessors, (72), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 141 [2023-11-23 07:36:00,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:36:00,159 INFO L225 Difference]: With dead ends: 245 [2023-11-23 07:36:00,159 INFO L226 Difference]: Without dead ends: 138 [2023-11-23 07:36:00,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-11-23 07:36:00,160 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 11 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:36:00,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1962 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 07:36:00,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-23 07:36:00,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-11-23 07:36:00,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 85 states have (on average 1.188235294117647) internal successors, (101), 87 states have internal predecessors, (101), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 07:36:00,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 180 transitions. [2023-11-23 07:36:00,166 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 180 transitions. Word has length 141 [2023-11-23 07:36:00,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:36:00,166 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 180 transitions. [2023-11-23 07:36:00,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.789473684210526) internal successors, (72), 21 states have internal predecessors, (72), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 07:36:00,167 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 180 transitions. [2023-11-23 07:36:00,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-23 07:36:00,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:36:00,167 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:36:00,200 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 07:36:00,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 07:36:00,379 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:36:00,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:36:00,379 INFO L85 PathProgramCache]: Analyzing trace with hash 252007050, now seen corresponding path program 6 times [2023-11-23 07:36:00,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:36:00,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054136246] [2023-11-23 07:36:00,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:36:00,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:36:00,436 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:36:00,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879870566] [2023-11-23 07:36:00,437 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-23 07:36:00,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:36:00,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:36:00,457 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 07:36:00,459 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 07:36:21,545 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2023-11-23 07:36:21,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:36:21,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 2826 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 07:36:21,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:36:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 194 proven. 21 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 07:36:21,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:36:22,028 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-11-23 07:36:22,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:36:22,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054136246] [2023-11-23 07:36:22,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:36:22,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879870566] [2023-11-23 07:36:22,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879870566] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:36:22,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:36:22,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2023-11-23 07:36:22,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569543573] [2023-11-23 07:36:22,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:36:22,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 07:36:22,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:36:22,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 07:36:22,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2023-11-23 07:36:22,031 INFO L87 Difference]: Start difference. First operand 138 states and 180 transitions. Second operand has 23 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 23 states have internal predecessors, (74), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 07:36:23,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:36:23,304 INFO L93 Difference]: Finished difference Result 246 states and 320 transitions. [2023-11-23 07:36:23,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 07:36:23,305 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 23 states have internal predecessors, (74), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 142 [2023-11-23 07:36:23,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:36:23,305 INFO L225 Difference]: With dead ends: 246 [2023-11-23 07:36:23,305 INFO L226 Difference]: Without dead ends: 139 [2023-11-23 07:36:23,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2023-11-23 07:36:23,306 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 17 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:36:23,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1658 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 07:36:23,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-23 07:36:23,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2023-11-23 07:36:23,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 86 states have (on average 1.186046511627907) internal successors, (102), 88 states have internal predecessors, (102), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 07:36:23,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 181 transitions. [2023-11-23 07:36:23,312 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 181 transitions. Word has length 142 [2023-11-23 07:36:23,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:36:23,313 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 181 transitions. [2023-11-23 07:36:23,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 23 states have internal predecessors, (74), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 07:36:23,313 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 181 transitions. [2023-11-23 07:36:23,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-23 07:36:23,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:36:23,314 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 7, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:36:23,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 07:36:23,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 07:36:23,537 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:36:23,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:36:23,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1036489354, now seen corresponding path program 7 times [2023-11-23 07:36:23,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:36:23,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825099330] [2023-11-23 07:36:23,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:36:23,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:36:23,613 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:36:23,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [486965474] [2023-11-23 07:36:23,614 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-23 07:36:23,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:36:23,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:36:23,615 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:36:23,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 07:36:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:36:24,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 2845 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 07:36:24,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:36:24,398 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 194 proven. 28 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 07:36:24,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:36:24,782 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-11-23 07:36:24,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:36:24,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825099330] [2023-11-23 07:36:24,783 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:36:24,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486965474] [2023-11-23 07:36:24,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486965474] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:36:24,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:36:24,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2023-11-23 07:36:24,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056022289] [2023-11-23 07:36:24,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:36:24,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-23 07:36:24,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:36:24,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-23 07:36:24,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2023-11-23 07:36:24,786 INFO L87 Difference]: Start difference. First operand 139 states and 181 transitions. Second operand has 25 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 25 states have internal predecessors, (76), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 07:36:25,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:36:25,948 INFO L93 Difference]: Finished difference Result 247 states and 321 transitions. [2023-11-23 07:36:25,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 07:36:25,948 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 25 states have internal predecessors, (76), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 143 [2023-11-23 07:36:25,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:36:25,949 INFO L225 Difference]: With dead ends: 247 [2023-11-23 07:36:25,949 INFO L226 Difference]: Without dead ends: 140 [2023-11-23 07:36:25,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2023-11-23 07:36:25,950 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 16 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:36:25,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1960 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 07:36:25,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-23 07:36:25,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-11-23 07:36:25,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 87 states have (on average 1.1839080459770115) internal successors, (103), 89 states have internal predecessors, (103), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 07:36:25,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 182 transitions. [2023-11-23 07:36:25,961 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 182 transitions. Word has length 143 [2023-11-23 07:36:25,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:36:25,963 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 182 transitions. [2023-11-23 07:36:25,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 25 states have internal predecessors, (76), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 07:36:25,964 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 182 transitions. [2023-11-23 07:36:25,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-23 07:36:25,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:36:25,965 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:36:25,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 07:36:26,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 07:36:26,184 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:36:26,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:36:26,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1969795082, now seen corresponding path program 8 times [2023-11-23 07:36:26,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:36:26,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019024933] [2023-11-23 07:36:26,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:36:26,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:36:26,240 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:36:26,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344678737] [2023-11-23 07:36:26,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:36:26,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:36:26,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:36:26,242 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:36:26,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 07:36:27,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:36:27,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:36:27,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 2864 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-23 07:36:27,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:36:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 194 proven. 36 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 07:36:27,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:36:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-11-23 07:36:27,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:36:27,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019024933] [2023-11-23 07:36:27,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:36:27,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344678737] [2023-11-23 07:36:27,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344678737] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:36:27,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:36:27,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2023-11-23 07:36:27,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350037089] [2023-11-23 07:36:27,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:36:27,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-23 07:36:27,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:36:27,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-23 07:36:27,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2023-11-23 07:36:27,706 INFO L87 Difference]: Start difference. First operand 140 states and 182 transitions. Second operand has 27 states, 25 states have (on average 3.12) internal successors, (78), 27 states have internal predecessors, (78), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 07:36:29,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:36:29,617 INFO L93 Difference]: Finished difference Result 248 states and 322 transitions. [2023-11-23 07:36:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 07:36:29,617 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.12) internal successors, (78), 27 states have internal predecessors, (78), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 144 [2023-11-23 07:36:29,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:36:29,618 INFO L225 Difference]: With dead ends: 248 [2023-11-23 07:36:29,618 INFO L226 Difference]: Without dead ends: 141 [2023-11-23 07:36:29,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2023-11-23 07:36:29,619 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 15 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:36:29,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2412 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 07:36:29,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-11-23 07:36:29,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2023-11-23 07:36:29,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 88 states have (on average 1.1818181818181819) internal successors, (104), 90 states have internal predecessors, (104), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 07:36:29,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 183 transitions. [2023-11-23 07:36:29,626 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 183 transitions. Word has length 144 [2023-11-23 07:36:29,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:36:29,626 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 183 transitions. [2023-11-23 07:36:29,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.12) internal successors, (78), 27 states have internal predecessors, (78), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-23 07:36:29,627 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 183 transitions. [2023-11-23 07:36:29,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-23 07:36:29,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:36:29,628 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:36:29,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 07:36:29,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 07:36:29,846 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:36:29,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:36:29,847 INFO L85 PathProgramCache]: Analyzing trace with hash 675332086, now seen corresponding path program 9 times [2023-11-23 07:36:29,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:36:29,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719974386] [2023-11-23 07:36:29,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:36:29,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:36:29,916 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:36:29,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621308551] [2023-11-23 07:36:29,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 07:36:29,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:36:29,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:36:29,918 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:36:29,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process Killed by 15