./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_hash_iter_done_harness.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_hash_iter_done_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 03b17f77ffc9b60dd6edfa1d1cf71f248568a9cd6bbbccab8c3e61d5773c4168 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:16:04,045 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:16:04,120 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 07:16:04,128 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:16:04,129 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:16:04,156 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:16:04,158 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:16:04,159 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:16:04,159 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:16:04,162 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:16:04,163 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:16:04,163 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:16:04,163 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:16:04,164 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:16:04,164 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:16:04,164 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:16:04,165 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:16:04,165 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 07:16:04,165 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:16:04,165 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:16:04,165 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:16:04,166 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:16:04,166 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:16:04,166 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:16:04,167 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:16:04,167 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:16:04,167 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:16:04,167 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:16:04,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:16:04,168 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:16:04,168 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:16:04,168 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:16:04,169 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 07:16:04,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 07:16:04,169 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:16:04,169 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:16:04,169 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:16:04,169 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:16:04,170 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:16:04,170 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b17f77ffc9b60dd6edfa1d1cf71f248568a9cd6bbbccab8c3e61d5773c4168 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 07:16:04,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:16:04,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:16:04,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:16:04,401 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:16:04,401 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:16:04,402 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_hash_iter_done_harness.i [2023-11-23 07:16:05,509 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:16:05,924 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:16:05,924 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_hash_iter_done_harness.i [2023-11-23 07:16:05,954 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aef39d7bb/e8cffd80ef3e4f0580127afc8fbb3d27/FLAGff7942653 [2023-11-23 07:16:05,970 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aef39d7bb/e8cffd80ef3e4f0580127afc8fbb3d27 [2023-11-23 07:16:05,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:16:05,974 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:16:05,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:16:05,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:16:05,979 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:16:05,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:16:05" (1/1) ... [2023-11-23 07:16:05,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aabe85a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:16:05, skipping insertion in model container [2023-11-23 07:16:05,981 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:16:05" (1/1) ... [2023-11-23 07:16:06,059 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:16:06,242 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_hash_iter_done_harness.i[4492,4505] [2023-11-23 07:16:06,250 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_hash_iter_done_harness.i[4552,4565] [2023-11-23 07:16:06,842 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:06,842 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:06,843 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:06,843 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:06,844 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:06,852 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:06,852 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:06,853 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:06,854 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:06,855 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:06,856 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:06,856 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:06,857 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,175 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:16:07,176 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:16:07,177 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:16:07,177 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:16:07,178 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:16:07,179 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:16:07,179 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:16:07,179 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:16:07,180 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:16:07,180 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:16:07,582 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,583 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,600 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,604 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,608 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,608 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,619 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,620 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,621 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,621 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,622 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,622 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,622 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:16:07,696 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:16:07,715 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_hash_iter_done_harness.i[4492,4505] [2023-11-23 07:16:07,716 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_hash_iter_done_harness.i[4552,4565] [2023-11-23 07:16:07,744 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,745 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,745 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,745 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,746 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,751 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,753 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,754 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,755 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,755 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,755 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,756 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,756 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,781 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:16:07,782 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:16:07,783 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:16:07,783 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:16:07,784 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:16:07,784 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:16:07,785 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:16:07,785 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:16:07,785 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:16:07,786 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:16:07,817 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7558-7569] [2023-11-23 07:16:07,878 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,879 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,883 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,884 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,886 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,886 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,937 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,938 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,938 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,938 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,939 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,939 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,939 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:16:07,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:16:08,117 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:16:08,117 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:16:08,118 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:16:08,118 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:16:08,118 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:16:08,118 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:16:08,118 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:16:08,118 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:16:08,118 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:16:08,119 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:16:08,119 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:16:08,119 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:16:08,119 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:16:08,119 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:16:08,119 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:16:08,119 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:16:08,119 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:16:08,120 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:16:08,126 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:16:08,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:16:08 WrapperNode [2023-11-23 07:16:08,127 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:16:08,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:16:08,128 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:16:08,128 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:16:08,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:16:08" (1/1) ... [2023-11-23 07:16:08,219 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:16:08" (1/1) ... [2023-11-23 07:16:08,290 INFO L138 Inliner]: procedures = 772, calls = 2455, calls flagged for inlining = 67, calls inlined = 11, statements flattened = 644 [2023-11-23 07:16:08,290 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:16:08,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:16:08,291 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:16:08,291 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:16:08,300 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:16:08" (1/1) ... [2023-11-23 07:16:08,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:16:08" (1/1) ... [2023-11-23 07:16:08,310 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:16:08" (1/1) ... [2023-11-23 07:16:08,402 INFO L188 MemorySlicer]: Split 319 memory accesses to 10 slices as follows [2, 5, 236, 6, 19, 2, 7, 3, 36, 3]. 74 percent of accesses are in the largest equivalence class. The 255 initializations are split as follows [2, 5, 236, 0, 0, 0, 0, 0, 9, 3]. The 7 writes are split as follows [0, 0, 0, 2, 1, 1, 1, 1, 1, 0]. [2023-11-23 07:16:08,403 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:16:08" (1/1) ... [2023-11-23 07:16:08,403 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:16:08" (1/1) ... [2023-11-23 07:16:08,444 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:16:08" (1/1) ... [2023-11-23 07:16:08,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:16:08" (1/1) ... [2023-11-23 07:16:08,456 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:16:08" (1/1) ... [2023-11-23 07:16:08,460 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:16:08" (1/1) ... [2023-11-23 07:16:08,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:16:08,488 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:16:08,488 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:16:08,488 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:16:08,489 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:16:08" (1/1) ... [2023-11-23 07:16:08,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:16:08,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:08,549 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 07:16:08,589 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 07:16:08,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-23 07:16:08,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-23 07:16:08,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-23 07:16:08,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-23 07:16:08,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-23 07:16:08,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-23 07:16:08,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-23 07:16:08,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-11-23 07:16:08,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-11-23 07:16:08,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2023-11-23 07:16:08,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 07:16:08,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 07:16:08,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 07:16:08,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 07:16:08,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 07:16:08,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 07:16:08,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 07:16:08,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 07:16:08,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-23 07:16:08,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-23 07:16:08,612 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_done [2023-11-23 07:16:08,612 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_done [2023-11-23 07:16:08,612 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 07:16:08,612 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 07:16:08,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:16:08,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:16:08,613 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-23 07:16:08,613 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-23 07:16:08,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 07:16:08,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:16:08,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 07:16:08,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 07:16:08,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 07:16:08,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 07:16:08,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 07:16:08,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 07:16:08,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 07:16:08,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 07:16:08,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-23 07:16:08,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-23 07:16:08,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:16:08,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:16:08,615 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 07:16:08,615 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 07:16:08,615 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 07:16:08,615 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 07:16:08,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 07:16:08,616 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 07:16:08,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 07:16:08,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 07:16:08,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 07:16:08,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 07:16:08,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 07:16:08,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 07:16:08,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 07:16:08,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 07:16:08,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-23 07:16:08,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-23 07:16:08,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-23 07:16:08,620 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 07:16:08,620 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 07:16:08,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 07:16:08,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 07:16:08,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 07:16:08,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 07:16:08,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 07:16:08,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 07:16:08,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 07:16:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 07:16:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-23 07:16:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-23 07:16:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-23 07:16:08,626 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-23 07:16:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 07:16:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-23 07:16:08,626 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-23 07:16:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:16:08,627 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:16:08,627 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2023-11-23 07:16:08,627 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2023-11-23 07:16:08,627 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-23 07:16:08,627 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-23 07:16:08,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 07:16:08,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 07:16:08,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 07:16:08,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 07:16:08,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 07:16:08,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 07:16:08,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 07:16:08,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-23 07:16:08,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-23 07:16:08,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-23 07:16:08,628 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 07:16:08,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 07:16:08,628 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 07:16:08,628 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 07:16:08,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 07:16:08,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 07:16:08,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 07:16:08,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 07:16:08,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 07:16:08,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 07:16:08,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 07:16:08,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 07:16:08,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-23 07:16:08,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-23 07:16:08,909 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:16:08,911 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:16:09,460 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:16:09,569 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:16:09,569 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 07:16:09,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:16:09 BoogieIcfgContainer [2023-11-23 07:16:09,570 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:16:09,572 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:16:09,572 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:16:09,574 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:16:09,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:16:05" (1/3) ... [2023-11-23 07:16:09,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124e6629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:16:09, skipping insertion in model container [2023-11-23 07:16:09,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:16:08" (2/3) ... [2023-11-23 07:16:09,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124e6629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:16:09, skipping insertion in model container [2023-11-23 07:16:09,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:16:09" (3/3) ... [2023-11-23 07:16:09,576 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_done_harness.i [2023-11-23 07:16:09,588 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:16:09,588 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 07:16:09,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:16:09,625 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;@5063c447, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:16:09,625 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 07:16:09,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 85 states have (on average 1.3058823529411765) internal successors, (111), 86 states have internal predecessors, (111), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-23 07:16:09,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-23 07:16:09,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:16:09,640 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:16:09,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:16:09,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:16:09,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1079703252, now seen corresponding path program 1 times [2023-11-23 07:16:09,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:16:09,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146752803] [2023-11-23 07:16:09,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:09,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:16:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:10,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:16:10,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146752803] [2023-11-23 07:16:10,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 07:16:10,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34947832] [2023-11-23 07:16:10,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:10,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:10,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:10,032 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 07:16:10,077 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 07:16:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:10,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 07:16:10,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:16:10,707 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-11-23 07:16:10,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:16:10,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34947832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:16:10,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:16:10,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 07:16:10,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308510222] [2023-11-23 07:16:10,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:16:10,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 07:16:10,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:16:10,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 07:16:10,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 07:16:10,736 INFO L87 Difference]: Start difference. First operand has 142 states, 85 states have (on average 1.3058823529411765) internal successors, (111), 86 states have internal predecessors, (111), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 07:16:10,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:16:10,867 INFO L93 Difference]: Finished difference Result 278 states and 406 transitions. [2023-11-23 07:16:10,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 07:16:10,869 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 131 [2023-11-23 07:16:10,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:16:10,875 INFO L225 Difference]: With dead ends: 278 [2023-11-23 07:16:10,875 INFO L226 Difference]: Without dead ends: 140 [2023-11-23 07:16:10,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 130 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 07:16:10,881 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:16:10,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:16:10,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-23 07:16:10,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-11-23 07:16:10,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 84 states have (on average 1.2738095238095237) internal successors, (107), 85 states have internal predecessors, (107), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-23 07:16:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 186 transitions. [2023-11-23 07:16:10,914 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 186 transitions. Word has length 131 [2023-11-23 07:16:10,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:16:10,914 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 186 transitions. [2023-11-23 07:16:10,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 07:16:10,915 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 186 transitions. [2023-11-23 07:16:10,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-23 07:16:10,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:16:10,917 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:16:10,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 07:16:11,130 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 07:16:11,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:16:11,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:16:11,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1957218540, now seen corresponding path program 1 times [2023-11-23 07:16:11,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:16:11,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250511657] [2023-11-23 07:16:11,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:11,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:16:11,211 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:16:11,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175298705] [2023-11-23 07:16:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:11,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:11,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:11,213 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 07:16:11,241 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 07:16:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:11,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 07:16:11,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:16:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 113 proven. 20 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 07:16:11,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:16:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-11-23 07:16:11,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:16:11,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250511657] [2023-11-23 07:16:11,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:16:11,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175298705] [2023-11-23 07:16:11,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175298705] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:16:11,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:16:11,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-23 07:16:11,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111707420] [2023-11-23 07:16:11,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:16:11,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:16:11,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:16:11,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:16:11,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:16:11,985 INFO L87 Difference]: Start difference. First operand 140 states and 186 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 6 states have call successors, (44), 3 states have call predecessors, (44), 4 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) [2023-11-23 07:16:12,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:16:12,407 INFO L93 Difference]: Finished difference Result 256 states and 340 transitions. [2023-11-23 07:16:12,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:16:12,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 6 states have call successors, (44), 3 states have call predecessors, (44), 4 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) Word has length 131 [2023-11-23 07:16:12,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:16:12,411 INFO L225 Difference]: With dead ends: 256 [2023-11-23 07:16:12,411 INFO L226 Difference]: Without dead ends: 142 [2023-11-23 07:16:12,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:16:12,413 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 151 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:16:12,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 652 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:16:12,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-23 07:16:12,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2023-11-23 07:16:12,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 85 states have (on average 1.2705882352941176) internal successors, (108), 87 states have internal predecessors, (108), 40 states have call successors, (40), 15 states have call predecessors, (40), 16 states have return successors, (41), 39 states have call predecessors, (41), 39 states have call successors, (41) [2023-11-23 07:16:12,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 189 transitions. [2023-11-23 07:16:12,425 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 189 transitions. Word has length 131 [2023-11-23 07:16:12,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:16:12,426 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 189 transitions. [2023-11-23 07:16:12,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 6 states have call successors, (44), 3 states have call predecessors, (44), 4 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) [2023-11-23 07:16:12,426 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 189 transitions. [2023-11-23 07:16:12,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-23 07:16:12,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:16:12,428 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:16:12,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 07:16:12,647 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 07:16:12,647 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:16:12,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:16:12,654 INFO L85 PathProgramCache]: Analyzing trace with hash -606801530, now seen corresponding path program 1 times [2023-11-23 07:16:12,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:16:12,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943559361] [2023-11-23 07:16:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:12,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:16:12,727 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:16:12,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12025213] [2023-11-23 07:16:12,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:12,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:12,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:12,728 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 07:16:12,755 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 07:16:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:13,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 2723 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 07:16:13,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:16:13,397 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 67 proven. 73 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-23 07:16:13,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:16:13,544 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-11-23 07:16:13,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:16:13,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943559361] [2023-11-23 07:16:13,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:16:13,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12025213] [2023-11-23 07:16:13,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12025213] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 07:16:13,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:16:13,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2023-11-23 07:16:13,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741815299] [2023-11-23 07:16:13,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:16:13,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:16:13,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:16:13,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:16:13,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-23 07:16:13,547 INFO L87 Difference]: Start difference. First operand 142 states and 189 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 5 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-23 07:16:14,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:16:14,060 INFO L93 Difference]: Finished difference Result 216 states and 288 transitions. [2023-11-23 07:16:14,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:16:14,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 5 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 132 [2023-11-23 07:16:14,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:16:14,063 INFO L225 Difference]: With dead ends: 216 [2023-11-23 07:16:14,063 INFO L226 Difference]: Without dead ends: 140 [2023-11-23 07:16:14,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-11-23 07:16:14,064 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 192 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:16:14,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 726 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:16:14,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-23 07:16:14,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-11-23 07:16:14,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 84 states have (on average 1.2619047619047619) internal successors, (106), 85 states have internal predecessors, (106), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-23 07:16:14,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 185 transitions. [2023-11-23 07:16:14,073 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 185 transitions. Word has length 132 [2023-11-23 07:16:14,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:16:14,074 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 185 transitions. [2023-11-23 07:16:14,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 5 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-23 07:16:14,074 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 185 transitions. [2023-11-23 07:16:14,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 07:16:14,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:16:14,076 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:16:14,106 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 07:16:14,291 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 07:16:14,292 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:16:14,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:16:14,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1436829644, now seen corresponding path program 1 times [2023-11-23 07:16:14,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:16:14,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79345761] [2023-11-23 07:16:14,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:14,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:16:14,344 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:16:14,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103063606] [2023-11-23 07:16:14,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:14,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:14,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:14,345 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 07:16:14,369 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 07:16:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:14,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 2728 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:16:14,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:16:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-23 07:16:14,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:16:14,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:16:14,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79345761] [2023-11-23 07:16:14,875 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:16:14,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103063606] [2023-11-23 07:16:14,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103063606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:16:14,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:16:14,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:16:14,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542859822] [2023-11-23 07:16:14,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:16:14,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:16:14,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:16:14,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:16:14,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:16:14,877 INFO L87 Difference]: Start difference. First operand 140 states and 185 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 07:16:15,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:16:15,581 INFO L93 Difference]: Finished difference Result 269 states and 349 transitions. [2023-11-23 07:16:15,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:16:15,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 133 [2023-11-23 07:16:15,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:16:15,583 INFO L225 Difference]: With dead ends: 269 [2023-11-23 07:16:15,583 INFO L226 Difference]: Without dead ends: 207 [2023-11-23 07:16:15,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:16:15,584 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 162 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:16:15,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 702 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 07:16:15,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-23 07:16:15,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 197. [2023-11-23 07:16:15,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 122 states have (on average 1.2540983606557377) internal successors, (153), 123 states have internal predecessors, (153), 49 states have call successors, (49), 25 states have call predecessors, (49), 25 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-23 07:16:15,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 250 transitions. [2023-11-23 07:16:15,599 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 250 transitions. Word has length 133 [2023-11-23 07:16:15,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:16:15,600 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 250 transitions. [2023-11-23 07:16:15,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 07:16:15,600 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 250 transitions. [2023-11-23 07:16:15,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 07:16:15,602 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:16:15,602 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:16:15,633 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 07:16:15,833 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 07:16:15,833 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:16:15,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:16:15,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1438676686, now seen corresponding path program 1 times [2023-11-23 07:16:15,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:16:15,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431505869] [2023-11-23 07:16:15,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:15,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:16:15,913 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:16:15,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216412839] [2023-11-23 07:16:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:15,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:15,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:15,914 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 07:16:15,918 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 07:16:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:16,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 2725 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 07:16:16,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:16:16,412 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-23 07:16:16,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:16:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-11-23 07:16:16,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:16:16,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431505869] [2023-11-23 07:16:16,497 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:16:16,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216412839] [2023-11-23 07:16:16,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216412839] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 07:16:16,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:16:16,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-11-23 07:16:16,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706482101] [2023-11-23 07:16:16,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:16:16,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:16:16,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:16:16,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:16:16,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:16:16,500 INFO L87 Difference]: Start difference. First operand 197 states and 250 transitions. Second operand has 5 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-23 07:16:16,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:16:16,720 INFO L93 Difference]: Finished difference Result 205 states and 258 transitions. [2023-11-23 07:16:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:16:16,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 133 [2023-11-23 07:16:16,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:16:16,723 INFO L225 Difference]: With dead ends: 205 [2023-11-23 07:16:16,723 INFO L226 Difference]: Without dead ends: 203 [2023-11-23 07:16:16,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:16:16,724 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 6 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:16:16,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 656 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:16:16,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-11-23 07:16:16,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2023-11-23 07:16:16,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 125 states have (on average 1.248) internal successors, (156), 127 states have internal predecessors, (156), 50 states have call successors, (50), 26 states have call predecessors, (50), 26 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-23 07:16:16,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 255 transitions. [2023-11-23 07:16:16,738 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 255 transitions. Word has length 133 [2023-11-23 07:16:16,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:16:16,738 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 255 transitions. [2023-11-23 07:16:16,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-23 07:16:16,739 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 255 transitions. [2023-11-23 07:16:16,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 07:16:16,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:16:16,740 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:16:16,756 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 07:16:16,956 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 07:16:16,956 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:16:16,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:16:16,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1178664206, now seen corresponding path program 1 times [2023-11-23 07:16:16,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:16:16,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873676159] [2023-11-23 07:16:16,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:16,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:16:17,007 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:16:17,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808293869] [2023-11-23 07:16:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:17,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:17,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:17,025 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 07:16:17,043 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 07:16:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:17,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 2731 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 07:16:17,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:16:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 39 proven. 9 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-23 07:16:17,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:16:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-23 07:16:17,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:16:17,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873676159] [2023-11-23 07:16:17,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:16:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808293869] [2023-11-23 07:16:17,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808293869] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 07:16:17,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:16:17,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 15 [2023-11-23 07:16:17,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949611701] [2023-11-23 07:16:17,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:16:17,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:16:17,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:16:17,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:16:17,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-11-23 07:16:17,827 INFO L87 Difference]: Start difference. First operand 202 states and 255 transitions. Second operand has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 07:16:18,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:16:18,187 INFO L93 Difference]: Finished difference Result 216 states and 272 transitions. [2023-11-23 07:16:18,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 07:16:18,188 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 133 [2023-11-23 07:16:18,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:16:18,189 INFO L225 Difference]: With dead ends: 216 [2023-11-23 07:16:18,189 INFO L226 Difference]: Without dead ends: 214 [2023-11-23 07:16:18,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:16:18,190 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 16 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:16:18,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 891 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:16:18,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-23 07:16:18,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 201. [2023-11-23 07:16:18,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 125 states have (on average 1.248) internal successors, (156), 126 states have internal predecessors, (156), 49 states have call successors, (49), 26 states have call predecessors, (49), 26 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-23 07:16:18,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 253 transitions. [2023-11-23 07:16:18,203 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 253 transitions. Word has length 133 [2023-11-23 07:16:18,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:16:18,203 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 253 transitions. [2023-11-23 07:16:18,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 07:16:18,203 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 253 transitions. [2023-11-23 07:16:18,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-23 07:16:18,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:16:18,205 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:16:18,220 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 07:16:18,420 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 07:16:18,420 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:16:18,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:16:18,421 INFO L85 PathProgramCache]: Analyzing trace with hash -770366214, now seen corresponding path program 1 times [2023-11-23 07:16:18,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:16:18,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90084314] [2023-11-23 07:16:18,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:18,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:16:18,472 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:16:18,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204148541] [2023-11-23 07:16:18,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:18,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:18,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:18,496 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 07:16:18,540 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 07:16:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:18,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 2736 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 07:16:18,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:16:19,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:16:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-23 07:16:19,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:16:19,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:16:19,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90084314] [2023-11-23 07:16:19,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:16:19,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204148541] [2023-11-23 07:16:19,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204148541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:16:19,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:16:19,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 07:16:19,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835712733] [2023-11-23 07:16:19,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:16:19,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 07:16:19,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:16:19,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 07:16:19,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:16:19,284 INFO L87 Difference]: Start difference. First operand 201 states and 253 transitions. Second operand has 11 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 6 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) [2023-11-23 07:16:21,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:24,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:26,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:28,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:30,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:31,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:16:31,356 INFO L93 Difference]: Finished difference Result 324 states and 414 transitions. [2023-11-23 07:16:31,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 07:16:31,360 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 6 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) Word has length 139 [2023-11-23 07:16:31,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:16:31,362 INFO L225 Difference]: With dead ends: 324 [2023-11-23 07:16:31,362 INFO L226 Difference]: Without dead ends: 201 [2023-11-23 07:16:31,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 122 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-11-23 07:16:31,363 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 202 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 123 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:16:31,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 419 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1281 Invalid, 5 Unknown, 0 Unchecked, 12.0s Time] [2023-11-23 07:16:31,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-11-23 07:16:31,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2023-11-23 07:16:31,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 125 states have (on average 1.24) internal successors, (155), 126 states have internal predecessors, (155), 49 states have call successors, (49), 26 states have call predecessors, (49), 26 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-23 07:16:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 252 transitions. [2023-11-23 07:16:31,384 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 252 transitions. Word has length 139 [2023-11-23 07:16:31,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:16:31,385 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 252 transitions. [2023-11-23 07:16:31,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 6 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) [2023-11-23 07:16:31,386 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 252 transitions. [2023-11-23 07:16:31,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-23 07:16:31,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:16:31,389 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:16:31,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 07:16:31,604 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 07:16:31,605 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:16:31,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:16:31,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1388995046, now seen corresponding path program 1 times [2023-11-23 07:16:31,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:16:31,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623534141] [2023-11-23 07:16:31,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:31,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:16:31,706 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:16:31,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963470034] [2023-11-23 07:16:31,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:31,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:31,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:31,708 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 07:16:31,712 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 07:16:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:32,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 2788 conjuncts, 76 conjunts are in the unsatisfiable core [2023-11-23 07:16:32,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:16:32,312 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 07:16:32,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:16:32,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:16:32,877 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 07:16:32,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:16:32,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:16:32,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623534141] [2023-11-23 07:16:32,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:16:32,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963470034] [2023-11-23 07:16:32,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963470034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:16:32,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:16:32,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-23 07:16:32,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052861139] [2023-11-23 07:16:32,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:16:32,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-23 07:16:32,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:16:32,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-23 07:16:32,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-11-23 07:16:32,882 INFO L87 Difference]: Start difference. First operand 201 states and 252 transitions. Second operand has 19 states, 16 states have (on average 5.1875) internal successors, (83), 17 states have internal predecessors, (83), 9 states have call successors, (27), 6 states have call predecessors, (27), 8 states have return successors, (25), 9 states have call predecessors, (25), 9 states have call successors, (25) [2023-11-23 07:16:35,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:37,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:40,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:42,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:44,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:46,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:48,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:50,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:52,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:54,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:16:54,980 INFO L93 Difference]: Finished difference Result 351 states and 449 transitions. [2023-11-23 07:16:54,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-23 07:16:54,980 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 5.1875) internal successors, (83), 17 states have internal predecessors, (83), 9 states have call successors, (27), 6 states have call predecessors, (27), 8 states have return successors, (25), 9 states have call predecessors, (25), 9 states have call successors, (25) Word has length 155 [2023-11-23 07:16:54,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:16:54,981 INFO L225 Difference]: With dead ends: 351 [2023-11-23 07:16:54,981 INFO L226 Difference]: Without dead ends: 217 [2023-11-23 07:16:54,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 128 SyntacticMatches, 11 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=927, Unknown=0, NotChecked=0, Total=1122 [2023-11-23 07:16:54,982 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 346 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 2342 mSolverCounterSat, 159 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 2510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2342 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:16:54,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 691 Invalid, 2510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2342 Invalid, 9 Unknown, 0 Unchecked, 21.7s Time] [2023-11-23 07:16:54,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-23 07:16:54,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 214. [2023-11-23 07:16:54,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 136 states have (on average 1.2352941176470589) internal successors, (168), 137 states have internal predecessors, (168), 49 states have call successors, (49), 28 states have call predecessors, (49), 28 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-23 07:16:54,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 265 transitions. [2023-11-23 07:16:54,995 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 265 transitions. Word has length 155 [2023-11-23 07:16:54,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:16:54,995 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 265 transitions. [2023-11-23 07:16:54,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 5.1875) internal successors, (83), 17 states have internal predecessors, (83), 9 states have call successors, (27), 6 states have call predecessors, (27), 8 states have return successors, (25), 9 states have call predecessors, (25), 9 states have call successors, (25) [2023-11-23 07:16:54,995 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 265 transitions. [2023-11-23 07:16:54,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-23 07:16:54,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:16:54,996 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:16:55,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 07:16:55,211 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 07:16:55,212 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:16:55,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:16:55,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1087169830, now seen corresponding path program 1 times [2023-11-23 07:16:55,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:16:55,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105509527] [2023-11-23 07:16:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:55,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:16:55,271 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:16:55,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [980850062] [2023-11-23 07:16:55,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:55,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:55,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:55,273 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 07:16:55,274 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 07:16:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:55,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 2778 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-23 07:16:55,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:16:57,838 WARN L876 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$#8.base| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0))) (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$#8.offset| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0)))) is different from true [2023-11-23 07:16:57,909 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-23 07:16:57,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:16:57,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:16:57,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105509527] [2023-11-23 07:16:57,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:16:57,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980850062] [2023-11-23 07:16:57,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980850062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:16:57,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:16:57,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 07:16:57,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491337283] [2023-11-23 07:16:57,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:16:57,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 07:16:57,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:16:57,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 07:16:57,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2023-11-23 07:16:57,914 INFO L87 Difference]: Start difference. First operand 214 states and 265 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-23 07:17:00,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:17:00,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:17:00,915 INFO L93 Difference]: Finished difference Result 345 states and 437 transitions. [2023-11-23 07:17:00,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:17:00,915 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 155 [2023-11-23 07:17:00,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:17:00,917 INFO L225 Difference]: With dead ends: 345 [2023-11-23 07:17:00,917 INFO L226 Difference]: Without dead ends: 216 [2023-11-23 07:17:00,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2023-11-23 07:17:00,927 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 7 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 196 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:17:00,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 811 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 1 Unknown, 196 Unchecked, 3.0s Time] [2023-11-23 07:17:00,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-23 07:17:00,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2023-11-23 07:17:00,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 138 states have (on average 1.2318840579710144) internal successors, (170), 138 states have internal predecessors, (170), 49 states have call successors, (49), 29 states have call predecessors, (49), 28 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-23 07:17:00,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 267 transitions. [2023-11-23 07:17:00,949 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 267 transitions. Word has length 155 [2023-11-23 07:17:00,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:17:00,949 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 267 transitions. [2023-11-23 07:17:00,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-23 07:17:00,949 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 267 transitions. [2023-11-23 07:17:00,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-23 07:17:00,951 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:17:00,951 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:17:00,972 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 07:17:01,175 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 07:17:01,175 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:17:01,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:17:01,176 INFO L85 PathProgramCache]: Analyzing trace with hash -175407494, now seen corresponding path program 1 times [2023-11-23 07:17:01,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:17:01,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714092735] [2023-11-23 07:17:01,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:01,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:17:01,222 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:17:01,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897426871] [2023-11-23 07:17:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:01,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:17:01,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:17:01,223 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 07:17:01,243 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 07:17:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:01,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 2836 conjuncts, 79 conjunts are in the unsatisfiable core [2023-11-23 07:17:01,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:17:01,843 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 07:17:01,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:17:01,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:17:02,437 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-23 07:17:02,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:17:02,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:17:02,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714092735] [2023-11-23 07:17:02,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:17:02,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897426871] [2023-11-23 07:17:02,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897426871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:17:02,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:17:02,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-11-23 07:17:02,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539800931] [2023-11-23 07:17:02,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:17:02,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-23 07:17:02,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:17:02,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-23 07:17:02,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2023-11-23 07:17:02,439 INFO L87 Difference]: Start difference. First operand 216 states and 267 transitions. Second operand has 21 states, 17 states have (on average 5.352941176470588) internal successors, (91), 19 states have internal predecessors, (91), 11 states have call successors, (29), 6 states have call predecessors, (29), 9 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2023-11-23 07:17:04,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:17:07,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:17:10,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:17:12,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:17:14,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:17:16,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:17:19,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:17:21,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:17:23,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:17:25,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:17:25,418 INFO L93 Difference]: Finished difference Result 358 states and 454 transitions. [2023-11-23 07:17:25,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-23 07:17:25,419 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 5.352941176470588) internal successors, (91), 19 states have internal predecessors, (91), 11 states have call successors, (29), 6 states have call predecessors, (29), 9 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) Word has length 167 [2023-11-23 07:17:25,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:17:25,422 INFO L225 Difference]: With dead ends: 358 [2023-11-23 07:17:25,422 INFO L226 Difference]: Without dead ends: 217 [2023-11-23 07:17:25,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 138 SyntacticMatches, 11 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=206, Invalid=1126, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 07:17:25,423 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 284 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 2491 mSolverCounterSat, 140 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 2640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2491 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:17:25,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 680 Invalid, 2640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 2491 Invalid, 9 Unknown, 0 Unchecked, 22.5s Time] [2023-11-23 07:17:25,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-23 07:17:25,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 216. [2023-11-23 07:17:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 138 states have (on average 1.2246376811594204) internal successors, (169), 138 states have internal predecessors, (169), 49 states have call successors, (49), 29 states have call predecessors, (49), 28 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-23 07:17:25,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 266 transitions. [2023-11-23 07:17:25,444 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 266 transitions. Word has length 167 [2023-11-23 07:17:25,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:17:25,446 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 266 transitions. [2023-11-23 07:17:25,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 5.352941176470588) internal successors, (91), 19 states have internal predecessors, (91), 11 states have call successors, (29), 6 states have call predecessors, (29), 9 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2023-11-23 07:17:25,446 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 266 transitions. [2023-11-23 07:17:25,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-23 07:17:25,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:17:25,449 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:17:25,481 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 07:17:25,664 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 07:17:25,665 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:17:25,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:17:25,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2058734118, now seen corresponding path program 1 times [2023-11-23 07:17:25,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:17:25,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437185436] [2023-11-23 07:17:25,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:25,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:17:25,764 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:17:25,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1624980963] [2023-11-23 07:17:25,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:25,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:17:25,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:17:25,782 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 07:17:25,783 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 07:17:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:26,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 2898 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 07:17:26,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:17:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-11-23 07:17:26,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:17:26,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:17:26,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437185436] [2023-11-23 07:17:26,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:17:26,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624980963] [2023-11-23 07:17:26,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624980963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:17:26,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:17:26,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 07:17:26,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908160328] [2023-11-23 07:17:26,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:17:26,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:17:26,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:17:26,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:17:26,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:17:26,345 INFO L87 Difference]: Start difference. First operand 216 states and 266 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-23 07:17:26,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:17:26,560 INFO L93 Difference]: Finished difference Result 396 states and 490 transitions. [2023-11-23 07:17:26,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:17:26,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 179 [2023-11-23 07:17:26,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:17:26,578 INFO L225 Difference]: With dead ends: 396 [2023-11-23 07:17:26,578 INFO L226 Difference]: Without dead ends: 224 [2023-11-23 07:17:26,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:17:26,579 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 1 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:17:26,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 664 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:17:26,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-23 07:17:26,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2023-11-23 07:17:26,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 144 states have (on average 1.2152777777777777) internal successors, (175), 144 states have internal predecessors, (175), 49 states have call successors, (49), 29 states have call predecessors, (49), 30 states have return successors, (50), 50 states have call predecessors, (50), 48 states have call successors, (50) [2023-11-23 07:17:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 274 transitions. [2023-11-23 07:17:26,598 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 274 transitions. Word has length 179 [2023-11-23 07:17:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:17:26,598 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 274 transitions. [2023-11-23 07:17:26,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-23 07:17:26,599 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 274 transitions. [2023-11-23 07:17:26,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-23 07:17:26,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:17:26,600 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:17:26,617 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 07:17:26,814 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 07:17:26,814 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:17:26,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:17:26,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1109776154, now seen corresponding path program 1 times [2023-11-23 07:17:26,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:17:26,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752613262] [2023-11-23 07:17:26,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:26,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:17:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:17:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:17:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:17:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:17:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:17:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:17:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 07:17:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:17:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:17:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:17:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:17:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:17:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 07:17:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 07:17:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 07:17:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-23 07:17:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:17:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:17:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:17:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-23 07:17:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-11-23 07:17:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-23 07:17:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-23 07:17:28,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:17:28,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752613262] [2023-11-23 07:17:28,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752613262] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:17:28,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034735323] [2023-11-23 07:17:28,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:28,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:17:28,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:17:28,737 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 07:17:28,761 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 07:17:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:29,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 2896 conjuncts, 118 conjunts are in the unsatisfiable core [2023-11-23 07:17:29,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:17:29,378 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 07:17:29,581 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-11-23 07:17:29,582 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:17:29,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034735323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:17:29,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:17:29,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 21 [2023-11-23 07:17:29,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38384766] [2023-11-23 07:17:29,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:17:29,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 07:17:29,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:17:29,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 07:17:29,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2023-11-23 07:17:29,584 INFO L87 Difference]: Start difference. First operand 224 states and 274 transitions. Second operand has 11 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 4 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-23 07:17:32,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:17:34,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:17:36,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:17:38,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:17:39,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:17:39,000 INFO L93 Difference]: Finished difference Result 373 states and 461 transitions. [2023-11-23 07:17:39,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 07:17:39,001 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 4 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 187 [2023-11-23 07:17:39,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:17:39,002 INFO L225 Difference]: With dead ends: 373 [2023-11-23 07:17:39,002 INFO L226 Difference]: Without dead ends: 232 [2023-11-23 07:17:39,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2023-11-23 07:17:39,003 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 152 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 13 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:17:39,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1323 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 533 Invalid, 4 Unknown, 0 Unchecked, 9.3s Time] [2023-11-23 07:17:39,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-23 07:17:39,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 226. [2023-11-23 07:17:39,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 146 states have (on average 1.2123287671232876) internal successors, (177), 146 states have internal predecessors, (177), 49 states have call successors, (49), 29 states have call predecessors, (49), 30 states have return successors, (50), 50 states have call predecessors, (50), 48 states have call successors, (50) [2023-11-23 07:17:39,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 276 transitions. [2023-11-23 07:17:39,018 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 276 transitions. Word has length 187 [2023-11-23 07:17:39,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:17:39,018 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 276 transitions. [2023-11-23 07:17:39,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 4 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-23 07:17:39,018 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 276 transitions. [2023-11-23 07:17:39,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-23 07:17:39,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:17:39,019 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:17:39,038 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 07:17:39,236 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 07:17:39,236 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:17:39,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:17:39,236 INFO L85 PathProgramCache]: Analyzing trace with hash 161724188, now seen corresponding path program 1 times [2023-11-23 07:17:39,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:17:39,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003000815] [2023-11-23 07:17:39,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:39,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:17:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:17:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:17:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:17:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:17:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:17:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:17:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 07:17:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:17:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:17:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:17:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:17:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:17:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 07:17:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 07:17:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:39,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 07:17:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:40,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-23 07:17:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:40,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:17:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:40,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:17:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:40,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:17:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:40,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-23 07:17:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:40,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-11-23 07:17:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:40,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-23 07:17:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:40,063 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-23 07:17:40,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:17:40,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003000815] [2023-11-23 07:17:40,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003000815] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:17:40,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232337131] [2023-11-23 07:17:40,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:40,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:17:40,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:17:40,065 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 07:17:40,068 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 07:17:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:40,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 07:17:40,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:17:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-11-23 07:17:40,706 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:17:40,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232337131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:17:40,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:17:40,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 07:17:40,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089228077] [2023-11-23 07:17:40,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:17:40,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:17:40,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:17:40,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:17:40,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:17:40,722 INFO L87 Difference]: Start difference. First operand 226 states and 276 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-11-23 07:17:40,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:17:40,930 INFO L93 Difference]: Finished difference Result 373 states and 460 transitions. [2023-11-23 07:17:40,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:17:40,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 187 [2023-11-23 07:17:40,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:17:40,932 INFO L225 Difference]: With dead ends: 373 [2023-11-23 07:17:40,932 INFO L226 Difference]: Without dead ends: 222 [2023-11-23 07:17:40,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:17:40,933 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 18 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:17:40,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 620 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:17:40,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-11-23 07:17:40,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2023-11-23 07:17:40,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 141 states have internal predecessors, (167), 49 states have call successors, (49), 28 states have call predecessors, (49), 30 states have return successors, (50), 50 states have call predecessors, (50), 48 states have call successors, (50) [2023-11-23 07:17:40,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 266 transitions. [2023-11-23 07:17:40,948 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 266 transitions. Word has length 187 [2023-11-23 07:17:40,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:17:40,948 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 266 transitions. [2023-11-23 07:17:40,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-11-23 07:17:40,948 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 266 transitions. [2023-11-23 07:17:40,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-23 07:17:40,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:17:40,949 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:17:40,965 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 07:17:41,160 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 07:17:41,160 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:17:41,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:17:41,176 INFO L85 PathProgramCache]: Analyzing trace with hash 414734415, now seen corresponding path program 1 times [2023-11-23 07:17:41,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:17:41,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601840815] [2023-11-23 07:17:41,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:41,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:17:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:41,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:41,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:41,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:17:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:41,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:17:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:41,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:17:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:41,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:41,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:41,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:41,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:17:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:41,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:17:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:41,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:41,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:17:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:17:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 07:17:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:17:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:17:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:17:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:17:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:17:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 07:17:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 07:17:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 07:17:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 07:17:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:17:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:17:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:17:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-11-23 07:17:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-23 07:17:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-11-23 07:17:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-11-23 07:17:42,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:17:42,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601840815] [2023-11-23 07:17:42,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601840815] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:17:42,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119664339] [2023-11-23 07:17:42,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:42,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:17:42,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:17:42,280 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 07:17:42,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 07:17:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:42,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 2920 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-23 07:17:42,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:17:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 07:17:42,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:17:42,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119664339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:17:42,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:17:42,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2023-11-23 07:17:42,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500978984] [2023-11-23 07:17:42,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:17:42,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:17:42,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:17:42,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:17:42,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:17:42,930 INFO L87 Difference]: Start difference. First operand 220 states and 266 transitions. Second operand has 9 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-23 07:17:43,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:17:43,334 INFO L93 Difference]: Finished difference Result 356 states and 436 transitions. [2023-11-23 07:17:43,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:17:43,335 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) Word has length 193 [2023-11-23 07:17:43,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:17:43,336 INFO L225 Difference]: With dead ends: 356 [2023-11-23 07:17:43,336 INFO L226 Difference]: Without dead ends: 220 [2023-11-23 07:17:43,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-11-23 07:17:43,337 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 3 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:17:43,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1201 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:17:43,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-23 07:17:43,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2023-11-23 07:17:43,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 140 states have (on average 1.1857142857142857) internal successors, (166), 141 states have internal predecessors, (166), 49 states have call successors, (49), 28 states have call predecessors, (49), 30 states have return successors, (50), 50 states have call predecessors, (50), 48 states have call successors, (50) [2023-11-23 07:17:43,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 265 transitions. [2023-11-23 07:17:43,350 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 265 transitions. Word has length 193 [2023-11-23 07:17:43,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:17:43,350 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 265 transitions. [2023-11-23 07:17:43,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-23 07:17:43,350 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 265 transitions. [2023-11-23 07:17:43,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-11-23 07:17:43,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:17:43,351 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:17:43,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-23 07:17:43,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:17:43,573 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:17:43,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:17:43,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1438756464, now seen corresponding path program 1 times [2023-11-23 07:17:43,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:17:43,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791885974] [2023-11-23 07:17:43,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:43,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:17:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:17:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:17:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:17:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:17:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:17:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:17:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:17:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:17:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 07:17:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:17:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:17:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:17:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:17:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:17:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 07:17:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 07:17:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-23 07:17:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 07:17:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:17:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:17:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:17:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 07:17:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-11-23 07:17:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-11-23 07:17:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:44,662 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-11-23 07:17:44,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:17:44,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791885974] [2023-11-23 07:17:44,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791885974] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:17:44,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683645452] [2023-11-23 07:17:44,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:44,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:17:44,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:17:44,665 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:17:44,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 07:17:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:45,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 07:17:45,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:17:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-23 07:17:45,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:17:45,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683645452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:17:45,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:17:45,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 18 [2023-11-23 07:17:45,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415620440] [2023-11-23 07:17:45,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:17:45,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 07:17:45,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:17:45,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 07:17:45,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2023-11-23 07:17:45,411 INFO L87 Difference]: Start difference. First operand 220 states and 265 transitions. Second operand has 12 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 3 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-23 07:17:46,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:17:46,053 INFO L93 Difference]: Finished difference Result 369 states and 449 transitions. [2023-11-23 07:17:46,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 07:17:46,053 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 3 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) Word has length 199 [2023-11-23 07:17:46,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:17:46,054 INFO L225 Difference]: With dead ends: 369 [2023-11-23 07:17:46,054 INFO L226 Difference]: Without dead ends: 230 [2023-11-23 07:17:46,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2023-11-23 07:17:46,055 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 3 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:17:46,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1650 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 07:17:46,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-11-23 07:17:46,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 220. [2023-11-23 07:17:46,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 140 states have (on average 1.1785714285714286) internal successors, (165), 141 states have internal predecessors, (165), 49 states have call successors, (49), 28 states have call predecessors, (49), 30 states have return successors, (50), 50 states have call predecessors, (50), 48 states have call successors, (50) [2023-11-23 07:17:46,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 264 transitions. [2023-11-23 07:17:46,068 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 264 transitions. Word has length 199 [2023-11-23 07:17:46,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:17:46,069 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 264 transitions. [2023-11-23 07:17:46,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 3 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-23 07:17:46,069 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 264 transitions. [2023-11-23 07:17:46,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-23 07:17:46,070 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:17:46,070 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:17:46,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 07:17:46,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 07:17:46,284 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:17:46,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:17:46,284 INFO L85 PathProgramCache]: Analyzing trace with hash 388894987, now seen corresponding path program 1 times [2023-11-23 07:17:46,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:17:46,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279359022] [2023-11-23 07:17:46,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:46,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:17:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:46,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:46,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:46,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:17:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:46,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:17:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:46,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:17:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:46,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:46,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:46,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:46,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:17:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:46,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:17:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:46,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:46,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:17:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:46,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:17:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:46,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:17:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:46,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 07:17:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:46,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 07:17:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:46,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 07:17:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:46,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:17:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:46,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:17:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:47,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:17:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:47,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 07:17:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:47,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 07:17:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:47,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:47,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:47,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:47,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 07:17:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:47,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-23 07:17:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:47,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:17:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:47,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:17:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:47,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:17:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:47,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-23 07:17:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:47,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-11-23 07:17:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:47,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-11-23 07:17:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:47,125 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-11-23 07:17:47,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:17:47,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279359022] [2023-11-23 07:17:47,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279359022] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:17:47,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422972919] [2023-11-23 07:17:47,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:47,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:17:47,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:17:47,127 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:17:47,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 07:17:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:47,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 165 conjunts are in the unsatisfiable core [2023-11-23 07:17:47,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:17:47,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:17:47,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:17:47,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2023-11-23 07:17:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 178 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-23 07:17:48,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:17:50,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422972919] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:17:50,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:17:50,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 22] total 29 [2023-11-23 07:17:50,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180126019] [2023-11-23 07:17:50,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:17:50,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-23 07:17:50,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:17:50,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-23 07:17:50,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1683, Unknown=0, NotChecked=0, Total=1806 [2023-11-23 07:17:50,067 INFO L87 Difference]: Start difference. First operand 220 states and 264 transitions. Second operand has 29 states, 21 states have (on average 6.523809523809524) internal successors, (137), 22 states have internal predecessors, (137), 11 states have call successors, (56), 6 states have call predecessors, (56), 10 states have return successors, (53), 9 states have call predecessors, (53), 11 states have call successors, (53) [2023-11-23 07:17:57,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:17:57,609 INFO L93 Difference]: Finished difference Result 406 states and 499 transitions. [2023-11-23 07:17:57,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-23 07:17:57,610 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 21 states have (on average 6.523809523809524) internal successors, (137), 22 states have internal predecessors, (137), 11 states have call successors, (56), 6 states have call predecessors, (56), 10 states have return successors, (53), 9 states have call predecessors, (53), 11 states have call successors, (53) Word has length 201 [2023-11-23 07:17:57,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:17:57,611 INFO L225 Difference]: With dead ends: 406 [2023-11-23 07:17:57,611 INFO L226 Difference]: Without dead ends: 238 [2023-11-23 07:17:57,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 367 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=313, Invalid=3719, Unknown=0, NotChecked=0, Total=4032 [2023-11-23 07:17:57,613 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 187 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 2671 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:17:57,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1084 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2671 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-23 07:17:57,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-23 07:17:57,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 222. [2023-11-23 07:17:57,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 141 states have (on average 1.1702127659574468) internal successors, (165), 143 states have internal predecessors, (165), 49 states have call successors, (49), 28 states have call predecessors, (49), 31 states have return successors, (53), 50 states have call predecessors, (53), 48 states have call successors, (53) [2023-11-23 07:17:57,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 267 transitions. [2023-11-23 07:17:57,638 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 267 transitions. Word has length 201 [2023-11-23 07:17:57,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:17:57,638 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 267 transitions. [2023-11-23 07:17:57,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 21 states have (on average 6.523809523809524) internal successors, (137), 22 states have internal predecessors, (137), 11 states have call successors, (56), 6 states have call predecessors, (56), 10 states have return successors, (53), 9 states have call predecessors, (53), 11 states have call successors, (53) [2023-11-23 07:17:57,638 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 267 transitions. [2023-11-23 07:17:57,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-23 07:17:57,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:17:57,640 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:17:57,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-23 07:17:57,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 07:17:57,852 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:17:57,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:17:57,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1791595774, now seen corresponding path program 1 times [2023-11-23 07:17:57,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:17:57,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544190909] [2023-11-23 07:17:57,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:57,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:17:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:17:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:17:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 07:17:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:17:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:17:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:17:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:17:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:17:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:17:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 07:17:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 07:17:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:17:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:17:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:17:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 07:17:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-23 07:17:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-23 07:17:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-23 07:17:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:17:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:17:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:17:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-23 07:17:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-11-23 07:17:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-11-23 07:17:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:58,797 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-23 07:17:58,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:17:58,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544190909] [2023-11-23 07:17:58,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544190909] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:17:58,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272230018] [2023-11-23 07:17:58,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:58,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:17:58,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:17:58,812 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:17:58,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 07:17:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:59,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 2975 conjuncts, 124 conjunts are in the unsatisfiable core [2023-11-23 07:17:59,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:17:59,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2023-11-23 07:17:59,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:17:59,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:17:59,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:17:59,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:18:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 212 proven. 12 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 07:18:01,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:18:01,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272230018] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:18:01,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:18:01,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26] total 33 [2023-11-23 07:18:01,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48874815] [2023-11-23 07:18:01,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:18:01,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-23 07:18:01,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:18:01,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-23 07:18:01,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1288, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 07:18:01,818 INFO L87 Difference]: Start difference. First operand 222 states and 267 transitions. Second operand has 33 states, 26 states have (on average 6.423076923076923) internal successors, (167), 28 states have internal predecessors, (167), 16 states have call successors, (60), 9 states have call predecessors, (60), 12 states have return successors, (56), 13 states have call predecessors, (56), 16 states have call successors, (56) [2023-11-23 07:18:05,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:18:08,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:18:12,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:18:14,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:18:17,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:18:19,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:18:21,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 07:18:23,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 07:18:25,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:18:27,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:18:29,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:18:31,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:18:33,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:18:44,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:18:44,712 INFO L93 Difference]: Finished difference Result 385 states and 483 transitions. [2023-11-23 07:18:44,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-23 07:18:44,712 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 26 states have (on average 6.423076923076923) internal successors, (167), 28 states have internal predecessors, (167), 16 states have call successors, (60), 9 states have call predecessors, (60), 12 states have return successors, (56), 13 states have call predecessors, (56), 16 states have call successors, (56) Word has length 205 [2023-11-23 07:18:44,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:18:44,714 INFO L225 Difference]: With dead ends: 385 [2023-11-23 07:18:44,714 INFO L226 Difference]: Without dead ends: 236 [2023-11-23 07:18:44,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 280 SyntacticMatches, 11 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1868 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=859, Invalid=7151, Unknown=0, NotChecked=0, Total=8010 [2023-11-23 07:18:44,716 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 475 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 4385 mSolverCounterSat, 292 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 4691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 4385 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:18:44,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1317 Invalid, 4691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [292 Valid, 4385 Invalid, 14 Unknown, 0 Unchecked, 34.9s Time] [2023-11-23 07:18:44,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-11-23 07:18:44,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 222. [2023-11-23 07:18:44,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 141 states have (on average 1.1631205673758864) internal successors, (164), 143 states have internal predecessors, (164), 49 states have call successors, (49), 28 states have call predecessors, (49), 31 states have return successors, (52), 50 states have call predecessors, (52), 48 states have call successors, (52) [2023-11-23 07:18:44,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 265 transitions. [2023-11-23 07:18:44,746 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 265 transitions. Word has length 205 [2023-11-23 07:18:44,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:18:44,747 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 265 transitions. [2023-11-23 07:18:44,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 26 states have (on average 6.423076923076923) internal successors, (167), 28 states have internal predecessors, (167), 16 states have call successors, (60), 9 states have call predecessors, (60), 12 states have return successors, (56), 13 states have call predecessors, (56), 16 states have call successors, (56) [2023-11-23 07:18:44,747 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 265 transitions. [2023-11-23 07:18:44,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-23 07:18:44,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:18:44,749 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:18:44,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-23 07:18:44,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 07:18:44,966 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:18:44,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:18:44,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1433305658, now seen corresponding path program 1 times [2023-11-23 07:18:44,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:18:44,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455413906] [2023-11-23 07:18:44,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:44,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:18:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:18:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:18:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:18:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 07:18:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:18:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:18:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:18:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:18:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:18:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:18:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:18:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 07:18:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 07:18:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:45,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:18:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:46,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:18:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:46,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:18:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:46,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 07:18:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:46,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-23 07:18:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:46,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:46,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:18:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:46,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:18:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:46,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-23 07:18:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:46,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-23 07:18:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:46,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:18:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:46,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:18:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:46,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:18:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:46,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-23 07:18:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:46,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2023-11-23 07:18:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:46,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-11-23 07:18:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-11-23 07:18:46,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:18:46,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455413906] [2023-11-23 07:18:46,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455413906] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:18:46,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807816028] [2023-11-23 07:18:46,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:46,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:18:46,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:18:46,159 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:18:46,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-23 07:18:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:46,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 2999 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 07:18:46,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:18:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-23 07:18:46,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:18:46,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807816028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:18:46,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:18:46,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 10 [2023-11-23 07:18:46,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532239581] [2023-11-23 07:18:46,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:18:46,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:18:46,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:18:46,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:18:46,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:18:46,879 INFO L87 Difference]: Start difference. First operand 222 states and 265 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-11-23 07:18:47,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:18:47,238 INFO L93 Difference]: Finished difference Result 398 states and 476 transitions. [2023-11-23 07:18:47,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:18:47,248 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 211 [2023-11-23 07:18:47,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:18:47,249 INFO L225 Difference]: With dead ends: 398 [2023-11-23 07:18:47,249 INFO L226 Difference]: Without dead ends: 224 [2023-11-23 07:18:47,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:18:47,253 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 2 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:18:47,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 730 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:18:47,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-23 07:18:47,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 218. [2023-11-23 07:18:47,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 138 states have (on average 1.1521739130434783) internal successors, (159), 140 states have internal predecessors, (159), 49 states have call successors, (49), 28 states have call predecessors, (49), 30 states have return successors, (51), 49 states have call predecessors, (51), 48 states have call successors, (51) [2023-11-23 07:18:47,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 259 transitions. [2023-11-23 07:18:47,280 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 259 transitions. Word has length 211 [2023-11-23 07:18:47,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:18:47,281 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 259 transitions. [2023-11-23 07:18:47,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-11-23 07:18:47,281 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 259 transitions. [2023-11-23 07:18:47,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-11-23 07:18:47,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:18:47,282 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:18:47,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-23 07:18:47,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 07:18:47,499 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:18:47,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:18:47,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2086538740, now seen corresponding path program 1 times [2023-11-23 07:18:47,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:18:47,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126044496] [2023-11-23 07:18:47,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:47,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:18:47,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:18:47,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923766137] [2023-11-23 07:18:47,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:47,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:18:47,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:18:47,559 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:18:47,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-23 07:18:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:48,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 07:18:48,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:18:48,339 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-23 07:18:48,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:18:48,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:18:48,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126044496] [2023-11-23 07:18:48,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:18:48,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923766137] [2023-11-23 07:18:48,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923766137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:18:48,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:18:48,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:18:48,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985659316] [2023-11-23 07:18:48,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:18:48,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:18:48,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:18:48,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:18:48,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:18:48,342 INFO L87 Difference]: Start difference. First operand 218 states and 259 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-23 07:18:48,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:18:48,705 INFO L93 Difference]: Finished difference Result 311 states and 376 transitions. [2023-11-23 07:18:48,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:18:48,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 217 [2023-11-23 07:18:48,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:18:48,707 INFO L225 Difference]: With dead ends: 311 [2023-11-23 07:18:48,707 INFO L226 Difference]: Without dead ends: 218 [2023-11-23 07:18:48,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:18:48,708 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 2 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:18:48,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 733 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:18:48,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-11-23 07:18:48,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2023-11-23 07:18:48,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 135 states have (on average 1.1407407407407408) internal successors, (154), 137 states have internal predecessors, (154), 49 states have call successors, (49), 28 states have call predecessors, (49), 29 states have return successors, (50), 48 states have call predecessors, (50), 48 states have call successors, (50) [2023-11-23 07:18:48,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 253 transitions. [2023-11-23 07:18:48,733 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 253 transitions. Word has length 217 [2023-11-23 07:18:48,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:18:48,734 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 253 transitions. [2023-11-23 07:18:48,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-23 07:18:48,734 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 253 transitions. [2023-11-23 07:18:48,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-23 07:18:48,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:18:48,735 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:18:48,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-23 07:18:48,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:18:48,939 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:18:48,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:18:48,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1611997434, now seen corresponding path program 1 times [2023-11-23 07:18:48,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:18:48,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104907097] [2023-11-23 07:18:48,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:48,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:18:48,983 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:18:48,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29044032] [2023-11-23 07:18:48,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:48,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:18:48,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:18:48,985 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:18:49,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-23 07:18:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:49,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 3359 conjuncts, 204 conjunts are in the unsatisfiable core [2023-11-23 07:18:49,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:18:49,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:18:49,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:18:49,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2023-11-23 07:18:50,711 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 192 proven. 5 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 07:18:50,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:18:52,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:18:52,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104907097] [2023-11-23 07:18:52,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:18:52,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29044032] [2023-11-23 07:18:52,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29044032] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:18:52,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:18:52,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-11-23 07:18:52,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690567706] [2023-11-23 07:18:52,078 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 07:18:52,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 07:18:52,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:18:52,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 07:18:52,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1294, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 07:18:52,079 INFO L87 Difference]: Start difference. First operand 214 states and 253 transitions. Second operand has 23 states, 17 states have (on average 6.294117647058823) internal successors, (107), 19 states have internal predecessors, (107), 8 states have call successors, (34), 3 states have call predecessors, (34), 8 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2023-11-23 07:18:56,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:18:56,521 INFO L93 Difference]: Finished difference Result 389 states and 464 transitions. [2023-11-23 07:18:56,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-23 07:18:56,521 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 6.294117647058823) internal successors, (107), 19 states have internal predecessors, (107), 8 states have call successors, (34), 3 states have call predecessors, (34), 8 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 223 [2023-11-23 07:18:56,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:18:56,522 INFO L225 Difference]: With dead ends: 389 [2023-11-23 07:18:56,522 INFO L226 Difference]: Without dead ends: 220 [2023-11-23 07:18:56,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 331 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=220, Invalid=2536, Unknown=0, NotChecked=0, Total=2756 [2023-11-23 07:18:56,524 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 28 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:18:56,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2743 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-23 07:18:56,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-23 07:18:56,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 214. [2023-11-23 07:18:56,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 135 states have (on average 1.1333333333333333) internal successors, (153), 137 states have internal predecessors, (153), 49 states have call successors, (49), 28 states have call predecessors, (49), 29 states have return successors, (50), 48 states have call predecessors, (50), 48 states have call successors, (50) [2023-11-23 07:18:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 252 transitions. [2023-11-23 07:18:56,549 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 252 transitions. Word has length 223 [2023-11-23 07:18:56,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:18:56,549 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 252 transitions. [2023-11-23 07:18:56,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 6.294117647058823) internal successors, (107), 19 states have internal predecessors, (107), 8 states have call successors, (34), 3 states have call predecessors, (34), 8 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2023-11-23 07:18:56,550 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 252 transitions. [2023-11-23 07:18:56,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-23 07:18:56,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:18:56,551 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:18:56,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-23 07:18:56,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:18:56,764 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:18:56,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:18:56,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1839915110, now seen corresponding path program 1 times [2023-11-23 07:18:56,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:18:56,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322662768] [2023-11-23 07:18:56,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:56,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:18:56,845 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:18:56,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185717922] [2023-11-23 07:18:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:18:56,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:18:56,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:18:56,861 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:18:56,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-23 07:18:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:18:57,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 3361 conjuncts, 174 conjunts are in the unsatisfiable core [2023-11-23 07:18:57,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:18:57,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:18:57,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2023-11-23 07:18:57,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:18:57,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:18:57,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:18:58,911 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 234 proven. 8 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 07:18:58,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:18:59,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:18:59,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322662768] [2023-11-23 07:18:59,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:18:59,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185717922] [2023-11-23 07:18:59,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185717922] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:18:59,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:18:59,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2023-11-23 07:18:59,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377507492] [2023-11-23 07:18:59,809 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 07:18:59,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-23 07:18:59,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:18:59,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-23 07:18:59,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2023-11-23 07:18:59,810 INFO L87 Difference]: Start difference. First operand 214 states and 252 transitions. Second operand has 26 states, 21 states have (on average 6.333333333333333) internal successors, (133), 25 states have internal predecessors, (133), 11 states have call successors, (37), 4 states have call predecessors, (37), 10 states have return successors, (35), 11 states have call predecessors, (35), 11 states have call successors, (35) [2023-11-23 07:19:03,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:19:03,891 INFO L93 Difference]: Finished difference Result 362 states and 440 transitions. [2023-11-23 07:19:03,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-23 07:19:03,891 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 6.333333333333333) internal successors, (133), 25 states have internal predecessors, (133), 11 states have call successors, (37), 4 states have call predecessors, (37), 10 states have return successors, (35), 11 states have call predecessors, (35), 11 states have call successors, (35) Word has length 224 [2023-11-23 07:19:03,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:19:03,893 INFO L225 Difference]: With dead ends: 362 [2023-11-23 07:19:03,893 INFO L226 Difference]: Without dead ends: 239 [2023-11-23 07:19:03,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 295 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=264, Invalid=2186, Unknown=0, NotChecked=0, Total=2450 [2023-11-23 07:19:03,894 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 269 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:19:03,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 2015 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-23 07:19:03,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-11-23 07:19:03,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 234. [2023-11-23 07:19:03,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 151 states have (on average 1.1655629139072847) internal successors, (176), 154 states have internal predecessors, (176), 49 states have call successors, (49), 28 states have call predecessors, (49), 33 states have return successors, (57), 51 states have call predecessors, (57), 48 states have call successors, (57) [2023-11-23 07:19:03,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 282 transitions. [2023-11-23 07:19:03,929 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 282 transitions. Word has length 224 [2023-11-23 07:19:03,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:19:03,929 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 282 transitions. [2023-11-23 07:19:03,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 6.333333333333333) internal successors, (133), 25 states have internal predecessors, (133), 11 states have call successors, (37), 4 states have call predecessors, (37), 10 states have return successors, (35), 11 states have call predecessors, (35), 11 states have call successors, (35) [2023-11-23 07:19:03,929 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 282 transitions. [2023-11-23 07:19:03,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-23 07:19:03,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:19:03,930 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:19:03,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-23 07:19:04,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:19:04,151 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:19:04,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:19:04,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1640368336, now seen corresponding path program 2 times [2023-11-23 07:19:04,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:19:04,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241570751] [2023-11-23 07:19:04,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:04,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:19:04,233 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:19:04,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661919985] [2023-11-23 07:19:04,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:19:04,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:19:04,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:19:04,257 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:19:04,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-23 07:19:04,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:19:04,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:19:04,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 3363 conjuncts, 150 conjunts are in the unsatisfiable core [2023-11-23 07:19:04,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:19:05,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2023-11-23 07:19:05,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:19:05,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:19:05,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:19:05,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:19:06,747 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 228 proven. 15 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 07:19:06,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:19:07,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:19:07,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241570751] [2023-11-23 07:19:07,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:19:07,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661919985] [2023-11-23 07:19:07,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661919985] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:19:07,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:19:07,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2023-11-23 07:19:07,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775153259] [2023-11-23 07:19:07,305 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 07:19:07,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-23 07:19:07,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:19:07,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-23 07:19:07,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2023-11-23 07:19:07,306 INFO L87 Difference]: Start difference. First operand 234 states and 282 transitions. Second operand has 27 states, 22 states have (on average 6.0) internal successors, (132), 25 states have internal predecessors, (132), 14 states have call successors, (37), 6 states have call predecessors, (37), 10 states have return successors, (35), 12 states have call predecessors, (35), 14 states have call successors, (35) [2023-11-23 07:19:11,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:19:14,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:19:17,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:19:19,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:19:24,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:19:24,401 INFO L93 Difference]: Finished difference Result 340 states and 418 transitions. [2023-11-23 07:19:24,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-23 07:19:24,404 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 22 states have (on average 6.0) internal successors, (132), 25 states have internal predecessors, (132), 14 states have call successors, (37), 6 states have call predecessors, (37), 10 states have return successors, (35), 12 states have call predecessors, (35), 14 states have call successors, (35) Word has length 225 [2023-11-23 07:19:24,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:19:24,405 INFO L225 Difference]: With dead ends: 340 [2023-11-23 07:19:24,405 INFO L226 Difference]: Without dead ends: 217 [2023-11-23 07:19:24,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 222 SyntacticMatches, 11 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=406, Invalid=3254, Unknown=0, NotChecked=0, Total=3660 [2023-11-23 07:19:24,406 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 281 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 3836 mSolverCounterSat, 159 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 3999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 3836 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:19:24,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 1005 Invalid, 3999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 3836 Invalid, 4 Unknown, 0 Unchecked, 15.7s Time] [2023-11-23 07:19:24,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-23 07:19:24,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 214. [2023-11-23 07:19:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 135 states have (on average 1.125925925925926) internal successors, (152), 137 states have internal predecessors, (152), 49 states have call successors, (49), 28 states have call predecessors, (49), 29 states have return successors, (50), 48 states have call predecessors, (50), 48 states have call successors, (50) [2023-11-23 07:19:24,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 251 transitions. [2023-11-23 07:19:24,489 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 251 transitions. Word has length 225 [2023-11-23 07:19:24,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:19:24,490 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 251 transitions. [2023-11-23 07:19:24,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 22 states have (on average 6.0) internal successors, (132), 25 states have internal predecessors, (132), 14 states have call successors, (37), 6 states have call predecessors, (37), 10 states have return successors, (35), 12 states have call predecessors, (35), 14 states have call successors, (35) [2023-11-23 07:19:24,491 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 251 transitions. [2023-11-23 07:19:24,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-23 07:19:24,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:19:24,492 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:19:24,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-23 07:19:24,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:19:24,693 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:19:24,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:19:24,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1584772386, now seen corresponding path program 3 times [2023-11-23 07:19:24,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:19:24,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742922899] [2023-11-23 07:19:24,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:19:24,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:19:24,761 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:19:24,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604023882] [2023-11-23 07:19:24,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 07:19:24,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:19:24,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:19:24,763 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:19:24,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-23 07:19:25,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 07:19:25,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:19:25,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 1947 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-23 07:19:25,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:19:28,126 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_aws_hash_iter_done_~iter.base_BEFORE_CALL_17 Int) (v_aws_hash_iter_done_~iter.offset_BEFORE_CALL_15 Int)) (let ((.cse0 (select |c_#memory_int#8| v_aws_hash_iter_done_~iter.base_BEFORE_CALL_17))) (= (mod (select .cse0 (+ v_aws_hash_iter_done_~iter.offset_BEFORE_CALL_15 24)) 18446744073709551616) (mod (select .cse0 (+ 32 v_aws_hash_iter_done_~iter.offset_BEFORE_CALL_15)) 18446744073709551616)))) is different from true [2023-11-23 07:19:34,892 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-11-23 07:19:34,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:19:36,175 INFO L349 Elim1Store]: treesize reduction 15, result has 80.0 percent of original size [2023-11-23 07:19:36,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 88 treesize of output 105 [2023-11-23 07:19:36,655 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 57 proven. 4 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-11-23 07:19:36,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:19:36,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742922899] [2023-11-23 07:19:36,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:19:36,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604023882] [2023-11-23 07:19:36,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604023882] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:19:36,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:19:36,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 19] total 44 [2023-11-23 07:19:36,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848630449] [2023-11-23 07:19:36,656 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:19:36,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-23 07:19:36,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:19:36,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-23 07:19:36,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1648, Unknown=4, NotChecked=82, Total=1892 [2023-11-23 07:19:36,658 INFO L87 Difference]: Start difference. First operand 214 states and 251 transitions. Second operand has 44 states, 36 states have (on average 3.0) internal successors, (108), 33 states have internal predecessors, (108), 11 states have call successors, (34), 5 states have call predecessors, (34), 11 states have return successors, (34), 11 states have call predecessors, (34), 9 states have call successors, (34) [2023-11-23 07:19:40,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:19:43,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:19:45,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:19:48,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:19:54,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:19:56,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:19:58,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:20:00,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:20:02,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:20:04,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:20:07,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:20:09,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:20:11,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:20:14,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:20:23,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:20:25,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:20:25,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:20:25,419 INFO L93 Difference]: Finished difference Result 383 states and 491 transitions. [2023-11-23 07:20:25,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-23 07:20:25,420 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 36 states have (on average 3.0) internal successors, (108), 33 states have internal predecessors, (108), 11 states have call successors, (34), 5 states have call predecessors, (34), 11 states have return successors, (34), 11 states have call predecessors, (34), 9 states have call successors, (34) Word has length 226 [2023-11-23 07:20:25,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:20:25,421 INFO L225 Difference]: With dead ends: 383 [2023-11-23 07:20:25,422 INFO L226 Difference]: Without dead ends: 381 [2023-11-23 07:20:25,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 412 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1765 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=558, Invalid=6749, Unknown=7, NotChecked=168, Total=7482 [2023-11-23 07:20:25,423 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 234 mSDsluCounter, 3252 mSDsCounter, 0 mSdLazyCounter, 3006 mSolverCounterSat, 134 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 3400 SdHoareTripleChecker+Invalid, 3572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 3006 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 416 IncrementalHoareTripleChecker+Unchecked, 39.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:20:25,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 3400 Invalid, 3572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 3006 Invalid, 16 Unknown, 416 Unchecked, 39.9s Time] [2023-11-23 07:20:25,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-11-23 07:20:25,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 304. [2023-11-23 07:20:25,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 195 states have (on average 1.1384615384615384) internal successors, (222), 199 states have internal predecessors, (222), 68 states have call successors, (68), 37 states have call predecessors, (68), 40 states have return successors, (73), 67 states have call predecessors, (73), 66 states have call successors, (73) [2023-11-23 07:20:25,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 363 transitions. [2023-11-23 07:20:25,490 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 363 transitions. Word has length 226 [2023-11-23 07:20:25,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:20:25,490 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 363 transitions. [2023-11-23 07:20:25,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 36 states have (on average 3.0) internal successors, (108), 33 states have internal predecessors, (108), 11 states have call successors, (34), 5 states have call predecessors, (34), 11 states have return successors, (34), 11 states have call predecessors, (34), 9 states have call successors, (34) [2023-11-23 07:20:25,492 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 363 transitions. [2023-11-23 07:20:25,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-23 07:20:25,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:20:25,493 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:20:25,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-23 07:20:25,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:20:25,707 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:20:25,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:20:25,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1417114782, now seen corresponding path program 1 times [2023-11-23 07:20:25,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:20:25,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330669292] [2023-11-23 07:20:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:20:25,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:20:25,758 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:20:25,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931071632] [2023-11-23 07:20:25,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:20:25,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:20:25,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:20:25,760 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:20:25,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-23 07:20:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:20:26,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 3371 conjuncts, 188 conjunts are in the unsatisfiable core [2023-11-23 07:20:26,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:20:26,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:20:26,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:20:27,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:20:27,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:20:28,266 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 234 proven. 11 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 07:20:28,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... Killed by 15