./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_init_dynamic_harness.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_init_dynamic_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ffbf3b1479afd9aaa2ec45fcd2782998a39316f97238379433376f7ba5094eb5 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:59:51,811 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:59:51,879 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 07:59:51,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:59:51,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:59:51,919 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:59:51,919 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:59:51,920 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:59:51,921 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:59:51,924 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:59:51,924 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:59:51,924 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:59:51,925 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:59:51,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:59:51,926 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:59:51,926 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:59:51,926 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:59:51,927 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 07:59:51,927 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:59:51,927 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:59:51,927 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:59:51,928 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:59:51,928 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:59:51,928 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:59:51,928 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:59:51,928 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:59:51,929 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:59:51,929 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:59:51,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:59:51,929 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:59:51,930 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:59:51,930 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:59:51,930 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 07:59:51,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 07:59:51,931 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:59:51,931 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:59:51,931 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:59:51,931 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:59:51,931 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:59:51,931 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffbf3b1479afd9aaa2ec45fcd2782998a39316f97238379433376f7ba5094eb5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 07:59:52,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:59:52,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:59:52,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:59:52,165 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:59:52,166 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:59:52,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_array_list_init_dynamic_harness.i [2023-11-23 07:59:53,118 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:59:53,460 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:59:53,460 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_init_dynamic_harness.i [2023-11-23 07:59:53,487 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d956cf80f/b67f190d8f7442cd908958e339f8cf9f/FLAGab83a0536 [2023-11-23 07:59:53,500 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d956cf80f/b67f190d8f7442cd908958e339f8cf9f [2023-11-23 07:59:53,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:59:53,503 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:59:53,504 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:59:53,504 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:59:53,509 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:59:53,509 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:59:53" (1/1) ... [2023-11-23 07:59:53,510 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37335d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:59:53, skipping insertion in model container [2023-11-23 07:59:53,510 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:59:53" (1/1) ... [2023-11-23 07:59:53,588 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:59:53,765 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_array_list_init_dynamic_harness.i[4501,4514] [2023-11-23 07:59:53,772 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_array_list_init_dynamic_harness.i[4561,4574] [2023-11-23 07:59:54,331 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,332 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,332 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,333 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,333 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,340 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,346 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,348 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,348 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,349 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,350 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,350 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,353 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,530 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:59:54,531 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:59:54,536 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:59:54,537 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:59:54,538 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:59:54,538 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:59:54,539 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:59:54,539 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:59:54,540 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:59:54,540 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:59:54,641 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,652 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:59:54,739 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:59:54,798 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_array_list_init_dynamic_harness.i[4501,4514] [2023-11-23 07:59:54,798 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_array_list_init_dynamic_harness.i[4561,4574] [2023-11-23 07:59:54,871 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,872 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,872 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,872 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,872 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,882 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,884 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,884 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,885 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,886 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,886 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,886 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,887 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,908 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:59:54,908 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:59:54,909 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:59:54,909 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:59:54,910 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:59:54,910 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:59:54,910 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:59:54,911 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:59:54,911 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:59:54,912 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:59:54,921 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,928 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:59:54,931 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7529-7540] [2023-11-23 07:59:54,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:59:55,094 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:59:55,095 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:59:55,095 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:59:55,095 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:59:55,095 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:59:55,096 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:59:55,096 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:59:55,096 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:59:55,096 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:59:55,097 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:59:55,097 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:59:55,098 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:59:55,098 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:59:55,098 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:59:55,099 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:59:55,105 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:59:55,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:59:55 WrapperNode [2023-11-23 07:59:55,106 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:59:55,107 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:59:55,107 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:59:55,107 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:59:55,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:59:55" (1/1) ... [2023-11-23 07:59:55,181 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:59:55" (1/1) ... [2023-11-23 07:59:55,223 INFO L138 Inliner]: procedures = 689, calls = 1562, calls flagged for inlining = 47, calls inlined = 6, statements flattened = 596 [2023-11-23 07:59:55,225 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:59:55,225 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:59:55,226 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:59:55,226 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:59:55,233 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:59:55" (1/1) ... [2023-11-23 07:59:55,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:59:55" (1/1) ... [2023-11-23 07:59:55,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:59:55" (1/1) ... [2023-11-23 07:59:55,244 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:59:55" (1/1) ... [2023-11-23 07:59:55,262 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:59:55" (1/1) ... [2023-11-23 07:59:55,265 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:59:55" (1/1) ... [2023-11-23 07:59:55,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:59:55" (1/1) ... [2023-11-23 07:59:55,272 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:59:55" (1/1) ... [2023-11-23 07:59:55,278 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:59:55,279 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:59:55,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:59:55,279 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:59:55,280 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:59:55" (1/1) ... [2023-11-23 07:59:55,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:59:55,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:59:55,330 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 07:59:55,339 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 07:59:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 07:59:55,377 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 07:59:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 07:59:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 07:59:55,377 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 07:59:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 07:59:55,378 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 07:59:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-23 07:59:55,378 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-23 07:59:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 07:59:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 07:59:55,379 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 07:59:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:59:55,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:59:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 07:59:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:59:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 07:59:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:59:55,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:59:55,380 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 07:59:55,380 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 07:59:55,380 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 07:59:55,381 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 07:59:55,381 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 07:59:55,381 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 07:59:55,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 07:59:55,381 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 07:59:55,382 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:59:55,382 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:59:55,382 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-23 07:59:55,382 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-23 07:59:55,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 07:59:55,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 07:59:55,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 07:59:55,383 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 07:59:55,383 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 07:59:55,383 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 07:59:55,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 07:59:55,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 07:59:55,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 07:59:55,648 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:59:55,651 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:59:56,109 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:59:56,185 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:59:56,185 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 07:59:56,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:59:56 BoogieIcfgContainer [2023-11-23 07:59:56,186 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:59:56,188 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:59:56,188 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:59:56,190 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:59:56,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:59:53" (1/3) ... [2023-11-23 07:59:56,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d728e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:59:56, skipping insertion in model container [2023-11-23 07:59:56,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:59:55" (2/3) ... [2023-11-23 07:59:56,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d728e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:59:56, skipping insertion in model container [2023-11-23 07:59:56,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:59:56" (3/3) ... [2023-11-23 07:59:56,194 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_init_dynamic_harness.i [2023-11-23 07:59:56,207 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:59:56,207 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 07:59:56,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:59:56,257 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;@5f289f58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:59:56,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 07:59:56,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 73 states have internal predecessors, (92), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-23 07:59:56,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-23 07:59:56,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:59:56,270 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:56,271 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:59:56,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:59:56,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1054372336, now seen corresponding path program 1 times [2023-11-23 07:59:56,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:59:56,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663320134] [2023-11-23 07:59:56,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:59:56,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:59:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:59:56,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:59:56,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663320134] [2023-11-23 07:59:56,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 07:59:56,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056085046] [2023-11-23 07:59:56,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:59:56,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:59:56,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:59:56,662 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 07:59:56,663 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 07:59:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:59:57,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 07:59:57,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:59:57,059 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 07:59:57,060 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:59:57,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056085046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:59:57,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:59:57,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 07:59:57,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91373155] [2023-11-23 07:59:57,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:59:57,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 07:59:57,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:59:57,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 07:59:57,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 07:59:57,097 INFO L87 Difference]: Start difference. First operand has 121 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 73 states have internal predecessors, (92), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:59:57,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:59:57,198 INFO L93 Difference]: Finished difference Result 238 states and 336 transitions. [2023-11-23 07:59:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 07:59:57,201 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2023-11-23 07:59:57,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:59:57,210 INFO L225 Difference]: With dead ends: 238 [2023-11-23 07:59:57,211 INFO L226 Difference]: Without dead ends: 117 [2023-11-23 07:59:57,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 49 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 07:59:57,220 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:59:57,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:59:57,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-23 07:59:57,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-11-23 07:59:57,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 70 states have internal predecessors, (84), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 07:59:57,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 150 transitions. [2023-11-23 07:59:57,274 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 150 transitions. Word has length 50 [2023-11-23 07:59:57,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:59:57,275 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 150 transitions. [2023-11-23 07:59:57,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:59:57,276 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 150 transitions. [2023-11-23 07:59:57,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 07:59:57,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:59:57,278 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:57,297 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 07:59:57,484 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 07:59:57,484 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:59:57,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:59:57,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2029367515, now seen corresponding path program 1 times [2023-11-23 07:59:57,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:59:57,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612317438] [2023-11-23 07:59:57,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:59:57,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:59:57,543 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:59:57,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [486752317] [2023-11-23 07:59:57,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:59:57,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:59:57,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:59:57,545 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 07:59:57,547 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 07:59:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:59:57,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 1990 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 07:59:57,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:59:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 07:59:57,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:59:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 07:59:58,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:59:58,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612317438] [2023-11-23 07:59:58,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:59:58,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486752317] [2023-11-23 07:59:58,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486752317] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 07:59:58,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:59:58,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-11-23 07:59:58,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956729533] [2023-11-23 07:59:58,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:59:58,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:59:58,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:59:58,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:59:58,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:59:58,067 INFO L87 Difference]: Start difference. First operand 117 states and 150 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-23 07:59:58,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:59:58,297 INFO L93 Difference]: Finished difference Result 125 states and 158 transitions. [2023-11-23 07:59:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:59:58,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 55 [2023-11-23 07:59:58,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:59:58,299 INFO L225 Difference]: With dead ends: 125 [2023-11-23 07:59:58,299 INFO L226 Difference]: Without dead ends: 123 [2023-11-23 07:59:58,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:59:58,300 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 6 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:59:58,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 525 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:59:58,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-23 07:59:58,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2023-11-23 07:59:58,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 74 states have internal predecessors, (87), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 07:59:58,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 155 transitions. [2023-11-23 07:59:58,309 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 155 transitions. Word has length 55 [2023-11-23 07:59:58,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:59:58,310 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 155 transitions. [2023-11-23 07:59:58,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-23 07:59:58,310 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 155 transitions. [2023-11-23 07:59:58,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 07:59:58,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:59:58,311 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:58,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 07:59:58,525 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 07:59:58,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:59:58,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:59:58,526 INFO L85 PathProgramCache]: Analyzing trace with hash 2031214557, now seen corresponding path program 1 times [2023-11-23 07:59:58,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:59:58,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688685849] [2023-11-23 07:59:58,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:59:58,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:59:58,590 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:59:58,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725884733] [2023-11-23 07:59:58,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:59:58,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:59:58,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:59:58,593 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 07:59:58,595 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 07:59:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:59:58,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 1995 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 07:59:58,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:59:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 07:59:58,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:59:58,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:59:58,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688685849] [2023-11-23 07:59:58,960 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:59:58,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725884733] [2023-11-23 07:59:58,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725884733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:59:58,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:59:58,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:59:58,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983600958] [2023-11-23 07:59:58,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:59:58,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:59:58,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:59:58,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:59:58,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:59:58,962 INFO L87 Difference]: Start difference. First operand 122 states and 155 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 07:59:59,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:59:59,101 INFO L93 Difference]: Finished difference Result 233 states and 293 transitions. [2023-11-23 07:59:59,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 07:59:59,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 55 [2023-11-23 07:59:59,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:59:59,103 INFO L225 Difference]: With dead ends: 233 [2023-11-23 07:59:59,103 INFO L226 Difference]: Without dead ends: 123 [2023-11-23 07:59:59,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:59:59,105 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 1 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:59:59,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 409 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:59:59,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-23 07:59:59,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-11-23 07:59:59,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 72 states have (on average 1.2222222222222223) internal successors, (88), 75 states have internal predecessors, (88), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 07:59:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 156 transitions. [2023-11-23 07:59:59,114 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 156 transitions. Word has length 55 [2023-11-23 07:59:59,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:59:59,115 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 156 transitions. [2023-11-23 07:59:59,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 07:59:59,115 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 156 transitions. [2023-11-23 07:59:59,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 07:59:59,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:59:59,117 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:59,142 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 07:59:59,330 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 07:59:59,330 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:59:59,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:59:59,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1020031419, now seen corresponding path program 1 times [2023-11-23 07:59:59,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:59:59,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815143817] [2023-11-23 07:59:59,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:59:59,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:59:59,378 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:59:59,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1648145885] [2023-11-23 07:59:59,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:59:59,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:59:59,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:59:59,380 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 07:59:59,403 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 07:59:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:59:59,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 2014 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:59:59,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:59:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 07:59:59,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:59:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 07:59:59,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:59:59,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815143817] [2023-11-23 07:59:59,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:59:59,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648145885] [2023-11-23 07:59:59,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648145885] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:59:59,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:59:59,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-23 07:59:59,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719723833] [2023-11-23 07:59:59,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:59:59,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:59:59,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:59:59,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:59:59,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:59:59,784 INFO L87 Difference]: Start difference. First operand 123 states and 156 transitions. Second operand has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 07:59:59,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:59:59,982 INFO L93 Difference]: Finished difference Result 237 states and 299 transitions. [2023-11-23 07:59:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:59:59,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 56 [2023-11-23 07:59:59,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:59:59,985 INFO L225 Difference]: With dead ends: 237 [2023-11-23 07:59:59,985 INFO L226 Difference]: Without dead ends: 126 [2023-11-23 07:59:59,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:59:59,986 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 1 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:59:59,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 539 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:59:59,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-23 07:59:59,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-11-23 07:59:59,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 75 states have (on average 1.2133333333333334) internal successors, (91), 78 states have internal predecessors, (91), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 08:00:00,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 159 transitions. [2023-11-23 08:00:00,001 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 159 transitions. Word has length 56 [2023-11-23 08:00:00,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:00:00,002 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 159 transitions. [2023-11-23 08:00:00,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 08:00:00,002 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 159 transitions. [2023-11-23 08:00:00,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-23 08:00:00,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:00:00,005 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:00:00,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 08:00:00,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:00:00,221 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:00:00,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:00:00,222 INFO L85 PathProgramCache]: Analyzing trace with hash -885114403, now seen corresponding path program 2 times [2023-11-23 08:00:00,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:00:00,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226649241] [2023-11-23 08:00:00,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:00:00,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:00:00,266 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:00:00,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765325760] [2023-11-23 08:00:00,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:00:00,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:00:00,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:00:00,267 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:00:00,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 08:00:00,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:00:00,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:00:00,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 2071 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 08:00:00,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:00:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 08:00:01,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:00:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 08:00:01,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:00:01,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226649241] [2023-11-23 08:00:01,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:00:01,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765325760] [2023-11-23 08:00:01,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765325760] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:00:01,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:00:01,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-23 08:00:01,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451601111] [2023-11-23 08:00:01,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:00:01,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 08:00:01,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:00:01,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 08:00:01,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:00:01,176 INFO L87 Difference]: Start difference. First operand 126 states and 159 transitions. Second operand has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 08:00:01,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:00:01,608 INFO L93 Difference]: Finished difference Result 243 states and 308 transitions. [2023-11-23 08:00:01,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 08:00:01,609 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 59 [2023-11-23 08:00:01,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:00:01,610 INFO L225 Difference]: With dead ends: 243 [2023-11-23 08:00:01,610 INFO L226 Difference]: Without dead ends: 132 [2023-11-23 08:00:01,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:00:01,611 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 1 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:00:01,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1220 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:00:01,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-23 08:00:01,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-11-23 08:00:01,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 84 states have internal predecessors, (97), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 08:00:01,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 165 transitions. [2023-11-23 08:00:01,620 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 165 transitions. Word has length 59 [2023-11-23 08:00:01,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:00:01,620 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 165 transitions. [2023-11-23 08:00:01,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 08:00:01,620 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 165 transitions. [2023-11-23 08:00:01,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 08:00:01,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:00:01,621 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:00:01,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 08:00:01,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:00:01,829 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:00:01,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:00:01,829 INFO L85 PathProgramCache]: Analyzing trace with hash 667312349, now seen corresponding path program 3 times [2023-11-23 08:00:01,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:00:01,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592751618] [2023-11-23 08:00:01,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:00:01,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:00:01,904 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:00:01,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1102154187] [2023-11-23 08:00:01,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:00:01,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:00:01,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:00:01,905 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:00:01,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 08:00:08,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-23 08:00:08,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:00:08,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 2185 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-23 08:00:08,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:00:08,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:00:08,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 08:00:08,520 INFO L349 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-11-23 08:00:08,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2023-11-23 08:00:08,680 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-23 08:00:08,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2023-11-23 08:00:08,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-23 08:00:08,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:00:08,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:00:08,864 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2023-11-23 08:00:08,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 25 [2023-11-23 08:00:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 08:00:08,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:00:09,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:00:09,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592751618] [2023-11-23 08:00:09,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:00:09,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102154187] [2023-11-23 08:00:09,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102154187] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:00:09,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:00:09,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-11-23 08:00:09,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115784682] [2023-11-23 08:00:09,002 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 08:00:09,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 08:00:09,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:00:09,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 08:00:09,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=521, Unknown=8, NotChecked=0, Total=600 [2023-11-23 08:00:09,003 INFO L87 Difference]: Start difference. First operand 132 states and 165 transitions. Second operand has 23 states, 21 states have (on average 1.619047619047619) internal successors, (34), 22 states have internal predecessors, (34), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-23 08:00:14,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:00:14,173 INFO L93 Difference]: Finished difference Result 222 states and 279 transitions. [2023-11-23 08:00:14,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-23 08:00:14,174 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 1.619047619047619) internal successors, (34), 22 states have internal predecessors, (34), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 65 [2023-11-23 08:00:14,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:00:14,175 INFO L225 Difference]: With dead ends: 222 [2023-11-23 08:00:14,175 INFO L226 Difference]: Without dead ends: 168 [2023-11-23 08:00:14,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 40 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=1041, Unknown=9, NotChecked=0, Total=1190 [2023-11-23 08:00:14,176 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 146 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:00:14,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 871 Invalid, 2488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2388 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-23 08:00:14,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-23 08:00:14,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 149. [2023-11-23 08:00:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 97 states have internal predecessors, (114), 36 states have call successors, (36), 18 states have call predecessors, (36), 18 states have return successors, (35), 33 states have call predecessors, (35), 34 states have call successors, (35) [2023-11-23 08:00:14,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 185 transitions. [2023-11-23 08:00:14,197 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 185 transitions. Word has length 65 [2023-11-23 08:00:14,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:00:14,197 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 185 transitions. [2023-11-23 08:00:14,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 1.619047619047619) internal successors, (34), 22 states have internal predecessors, (34), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-23 08:00:14,197 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 185 transitions. [2023-11-23 08:00:14,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 08:00:14,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:00:14,198 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:00:14,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 08:00:14,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:00:14,408 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:00:14,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:00:14,409 INFO L85 PathProgramCache]: Analyzing trace with hash -691201671, now seen corresponding path program 1 times [2023-11-23 08:00:14,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:00:14,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384995956] [2023-11-23 08:00:14,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:00:14,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:00:14,464 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:00:14,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180611257] [2023-11-23 08:00:14,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:00:14,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:00:14,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:00:14,466 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:00:14,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 08:00:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:14,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 2168 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 08:00:14,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:00:14,838 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 08:00:14,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:00:14,887 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 08:00:14,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:00:14,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384995956] [2023-11-23 08:00:14,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:00:14,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180611257] [2023-11-23 08:00:14,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180611257] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 08:00:14,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:00:14,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-23 08:00:14,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973629301] [2023-11-23 08:00:14,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:00:14,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:00:14,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:00:14,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:00:14,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:00:14,890 INFO L87 Difference]: Start difference. First operand 149 states and 185 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 08:00:14,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:00:14,987 INFO L93 Difference]: Finished difference Result 216 states and 266 transitions. [2023-11-23 08:00:14,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 08:00:14,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 68 [2023-11-23 08:00:14,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:00:14,990 INFO L225 Difference]: With dead ends: 216 [2023-11-23 08:00:14,990 INFO L226 Difference]: Without dead ends: 155 [2023-11-23 08:00:14,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:00:14,992 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 3 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:00:14,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 266 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:00:14,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-23 08:00:15,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2023-11-23 08:00:15,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 96 states have (on average 1.2083333333333333) internal successors, (116), 99 states have internal predecessors, (116), 36 states have call successors, (36), 18 states have call predecessors, (36), 18 states have return successors, (35), 33 states have call predecessors, (35), 34 states have call successors, (35) [2023-11-23 08:00:15,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 187 transitions. [2023-11-23 08:00:15,034 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 187 transitions. Word has length 68 [2023-11-23 08:00:15,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:00:15,034 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 187 transitions. [2023-11-23 08:00:15,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 08:00:15,035 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 187 transitions. [2023-11-23 08:00:15,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 08:00:15,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:00:15,035 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:00:15,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 08:00:15,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:00:15,237 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:00:15,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:00:15,237 INFO L85 PathProgramCache]: Analyzing trace with hash 876860528, now seen corresponding path program 1 times [2023-11-23 08:00:15,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:00:15,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670977470] [2023-11-23 08:00:15,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:00:15,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:00:15,306 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:00:15,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974487743] [2023-11-23 08:00:15,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:00:15,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:00:15,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:00:15,307 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:00:15,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 08:00:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:15,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 2171 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 08:00:15,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:00:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 08:00:15,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:00:15,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:00:15,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670977470] [2023-11-23 08:00:15,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:00:15,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974487743] [2023-11-23 08:00:15,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974487743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:00:15,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:00:15,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:00:15,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716743209] [2023-11-23 08:00:15,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:00:15,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:00:15,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:00:15,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:00:15,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:00:15,688 INFO L87 Difference]: Start difference. First operand 151 states and 187 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 08:00:15,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:00:15,816 INFO L93 Difference]: Finished difference Result 219 states and 271 transitions. [2023-11-23 08:00:15,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:00:15,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 68 [2023-11-23 08:00:15,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:00:15,818 INFO L225 Difference]: With dead ends: 219 [2023-11-23 08:00:15,818 INFO L226 Difference]: Without dead ends: 155 [2023-11-23 08:00:15,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 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 08:00:15,819 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 1 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:00:15,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 538 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:00:15,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-23 08:00:15,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2023-11-23 08:00:15,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 99 states have (on average 1.202020202020202) internal successors, (119), 102 states have internal predecessors, (119), 36 states have call successors, (36), 18 states have call predecessors, (36), 19 states have return successors, (37), 34 states have call predecessors, (37), 34 states have call successors, (37) [2023-11-23 08:00:15,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 192 transitions. [2023-11-23 08:00:15,829 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 192 transitions. Word has length 68 [2023-11-23 08:00:15,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:00:15,830 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 192 transitions. [2023-11-23 08:00:15,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 08:00:15,830 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 192 transitions. [2023-11-23 08:00:15,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-23 08:00:15,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:00:15,831 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:00:15,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 08:00:16,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-23 08:00:16,038 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:00:16,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:00:16,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1677745581, now seen corresponding path program 1 times [2023-11-23 08:00:16,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:00:16,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004499934] [2023-11-23 08:00:16,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:00:16,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:00:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:16,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:00:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:16,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:00:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:16,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:00:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:16,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 08:00:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:16,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:00:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:16,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:00:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:16,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:00:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:17,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:00:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:17,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:00:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:17,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:00:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:17,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 08:00:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 08:00:17,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:00:17,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004499934] [2023-11-23 08:00:17,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004499934] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:00:17,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310383353] [2023-11-23 08:00:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:00:17,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:00:17,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:00:17,300 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:00:17,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 08:00:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:17,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 2170 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-23 08:00:17,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:00:17,862 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 08:00:17,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 08:00:17,919 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:00:17,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-23 08:00:17,953 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:00:17,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-23 08:00:17,994 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:00:17,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2023-11-23 08:00:18,043 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:00:18,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 68 [2023-11-23 08:00:18,114 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:00:18,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2023-11-23 08:00:18,181 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:00:18,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2023-11-23 08:00:18,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:00:18,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2023-11-23 08:00:18,355 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:00:18,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2023-11-23 08:00:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 08:00:19,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:00:19,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310383353] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:00:19,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:00:19,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 34 [2023-11-23 08:00:19,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204018953] [2023-11-23 08:00:19,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:00:19,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-23 08:00:19,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:00:19,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-23 08:00:19,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1378, Unknown=0, NotChecked=0, Total=1482 [2023-11-23 08:00:19,514 INFO L87 Difference]: Start difference. First operand 155 states and 192 transitions. Second operand has 34 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 29 states have internal predecessors, (64), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:00:24,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:00:24,415 INFO L93 Difference]: Finished difference Result 436 states and 537 transitions. [2023-11-23 08:00:24,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-23 08:00:24,415 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 29 states have internal predecessors, (64), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 72 [2023-11-23 08:00:24,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:00:24,417 INFO L225 Difference]: With dead ends: 436 [2023-11-23 08:00:24,417 INFO L226 Difference]: Without dead ends: 301 [2023-11-23 08:00:24,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=309, Invalid=3351, Unknown=0, NotChecked=0, Total=3660 [2023-11-23 08:00:24,421 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 483 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 2721 mSolverCounterSat, 336 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 3060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 2721 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:00:24,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 1148 Invalid, 3060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 2721 Invalid, 3 Unknown, 0 Unchecked, 3.6s Time] [2023-11-23 08:00:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-11-23 08:00:24,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 269. [2023-11-23 08:00:24,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 173 states have (on average 1.2254335260115607) internal successors, (212), 179 states have internal predecessors, (212), 59 states have call successors, (59), 33 states have call predecessors, (59), 36 states have return successors, (63), 56 states have call predecessors, (63), 55 states have call successors, (63) [2023-11-23 08:00:24,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 334 transitions. [2023-11-23 08:00:24,455 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 334 transitions. Word has length 72 [2023-11-23 08:00:24,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:00:24,457 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 334 transitions. [2023-11-23 08:00:24,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 29 states have internal predecessors, (64), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:00:24,457 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 334 transitions. [2023-11-23 08:00:24,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 08:00:24,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:00:24,458 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:00:24,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 08:00:24,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:00:24,675 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:00:24,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:00:24,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1970093616, now seen corresponding path program 1 times [2023-11-23 08:00:24,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:00:24,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035221795] [2023-11-23 08:00:24,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:00:24,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:00:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:25,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:00:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:25,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:00:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:00:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:25,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 08:00:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:25,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:00:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:25,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:00:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:25,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:00:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:25,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:00:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:25,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:00:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:25,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:00:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:25,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:00:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:25,179 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-23 08:00:25,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:00:25,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035221795] [2023-11-23 08:00:25,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035221795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:00:25,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:00:25,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 08:00:25,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385360769] [2023-11-23 08:00:25,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:00:25,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 08:00:25,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:00:25,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 08:00:25,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:00:25,182 INFO L87 Difference]: Start difference. First operand 269 states and 334 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 08:00:25,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:00:25,939 INFO L93 Difference]: Finished difference Result 317 states and 387 transitions. [2023-11-23 08:00:25,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 08:00:25,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 75 [2023-11-23 08:00:25,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:00:25,948 INFO L225 Difference]: With dead ends: 317 [2023-11-23 08:00:25,948 INFO L226 Difference]: Without dead ends: 315 [2023-11-23 08:00:25,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:00:25,949 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 210 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:00:25,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 485 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 08:00:25,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-23 08:00:25,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 283. [2023-11-23 08:00:25,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 181 states have (on average 1.2154696132596685) internal successors, (220), 189 states have internal predecessors, (220), 61 states have call successors, (61), 35 states have call predecessors, (61), 40 states have return successors, (67), 58 states have call predecessors, (67), 57 states have call successors, (67) [2023-11-23 08:00:25,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 348 transitions. [2023-11-23 08:00:25,979 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 348 transitions. Word has length 75 [2023-11-23 08:00:25,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:00:25,979 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 348 transitions. [2023-11-23 08:00:25,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 08:00:25,980 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 348 transitions. [2023-11-23 08:00:25,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 08:00:25,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:00:25,981 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 5, 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] [2023-11-23 08:00:25,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 08:00:25,981 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:00:25,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:00:25,981 INFO L85 PathProgramCache]: Analyzing trace with hash -402031417, now seen corresponding path program 1 times [2023-11-23 08:00:25,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:00:25,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351303638] [2023-11-23 08:00:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:00:25,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:00:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:26,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:00:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:26,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:00:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:26,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:00:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:26,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 08:00:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:26,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:00:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:26,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:00:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:26,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:00:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:26,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:00:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:26,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:00:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:26,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:00:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:26,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:00:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 08:00:26,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:00:26,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351303638] [2023-11-23 08:00:26,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351303638] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:00:26,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300198477] [2023-11-23 08:00:26,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:00:26,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:00:26,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:00:26,991 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:00:26,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 08:00:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:00:27,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 2196 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-23 08:00:27,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:00:27,793 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 08:00:27,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 08:00:27,851 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:00:27,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-23 08:00:27,888 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:00:27,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-23 08:00:27,932 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:00:27,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2023-11-23 08:00:27,979 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:00:27,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 68 [2023-11-23 08:00:28,036 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:00:28,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2023-11-23 08:00:28,098 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:00:28,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2023-11-23 08:00:28,230 INFO L349 Elim1Store]: treesize reduction 142, result has 33.3 percent of original size [2023-11-23 08:00:28,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 84 treesize of output 104 [2023-11-23 08:00:28,418 INFO L349 Elim1Store]: treesize reduction 224, result has 26.3 percent of original size [2023-11-23 08:00:28,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 93 treesize of output 116 [2023-11-23 08:00:28,662 INFO L349 Elim1Store]: treesize reduction 314, result has 22.1 percent of original size [2023-11-23 08:00:28,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 102 treesize of output 128 [2023-11-23 08:00:41,277 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 6 proven. 74 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 08:00:41,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:00:41,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300198477] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:00:41,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:00:41,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23] total 39 [2023-11-23 08:00:41,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650089945] [2023-11-23 08:00:41,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:00:41,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-23 08:00:41,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:00:41,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-23 08:00:41,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1853, Unknown=5, NotChecked=0, Total=1980 [2023-11-23 08:00:41,836 INFO L87 Difference]: Start difference. First operand 283 states and 348 transitions. Second operand has 39 states, 38 states have (on average 1.894736842105263) internal successors, (72), 34 states have internal predecessors, (72), 4 states have call successors, (17), 8 states have call predecessors, (17), 6 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-23 08:00:58,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:01:00,709 WARN L539 Checker$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 08:01:02,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:01:05,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:01:08,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:01:13,513 WARN L539 Checker$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 08:01:15,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:01:17,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:01:19,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:01:22,792 WARN L539 Checker$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 08:01:26,643 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 08:01:26,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:01:26,694 INFO L93 Difference]: Finished difference Result 647 states and 796 transitions. [2023-11-23 08:01:26,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-23 08:01:26,694 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.894736842105263) internal successors, (72), 34 states have internal predecessors, (72), 4 states have call successors, (17), 8 states have call predecessors, (17), 6 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 75 [2023-11-23 08:01:26,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:01:26,698 INFO L225 Difference]: With dead ends: 647 [2023-11-23 08:01:26,698 INFO L226 Difference]: Without dead ends: 385 [2023-11-23 08:01:26,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=379, Invalid=4581, Unknown=10, NotChecked=0, Total=4970 [2023-11-23 08:01:26,700 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 258 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 3970 mSolverCounterSat, 128 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 4125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 3970 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:01:26,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 1907 Invalid, 4125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 3970 Invalid, 27 Unknown, 0 Unchecked, 30.3s Time] [2023-11-23 08:01:26,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-11-23 08:01:26,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 297. [2023-11-23 08:01:26,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 192 states have (on average 1.21875) internal successors, (234), 202 states have internal predecessors, (234), 62 states have call successors, (62), 36 states have call predecessors, (62), 42 states have return successors, (69), 58 states have call predecessors, (69), 58 states have call successors, (69) [2023-11-23 08:01:26,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 365 transitions. [2023-11-23 08:01:26,735 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 365 transitions. Word has length 75 [2023-11-23 08:01:26,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:01:26,735 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 365 transitions. [2023-11-23 08:01:26,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.894736842105263) internal successors, (72), 34 states have internal predecessors, (72), 4 states have call successors, (17), 8 states have call predecessors, (17), 6 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-23 08:01:26,736 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 365 transitions. [2023-11-23 08:01:26,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-23 08:01:26,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:01:26,736 INFO L195 NwaCegarLoop]: trace histogram [12, 5, 5, 5, 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] [2023-11-23 08:01:26,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 08:01:26,957 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,SelfDestructingSolverStorable10 [2023-11-23 08:01:26,957 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:01:26,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:01:26,957 INFO L85 PathProgramCache]: Analyzing trace with hash -750200721, now seen corresponding path program 1 times [2023-11-23 08:01:26,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:01:26,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378210836] [2023-11-23 08:01:26,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:01:26,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:01:27,009 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:01:27,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082053518] [2023-11-23 08:01:27,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:01:27,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:01:27,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:01:27,010 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:01:27,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 08:01:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:27,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 2261 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 08:01:27,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:01:27,493 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-23 08:01:27,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:01:27,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:01:27,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378210836] [2023-11-23 08:01:27,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:01:27,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082053518] [2023-11-23 08:01:27,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082053518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:01:27,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:01:27,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:01:27,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504026610] [2023-11-23 08:01:27,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:01:27,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:01:27,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:01:27,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:01:27,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:01:27,495 INFO L87 Difference]: Start difference. First operand 297 states and 365 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 08:01:27,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:01:27,731 INFO L93 Difference]: Finished difference Result 380 states and 466 transitions. [2023-11-23 08:01:27,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:01:27,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 78 [2023-11-23 08:01:27,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:01:27,733 INFO L225 Difference]: With dead ends: 380 [2023-11-23 08:01:27,733 INFO L226 Difference]: Without dead ends: 292 [2023-11-23 08:01:27,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:01:27,734 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 47 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:01:27,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 527 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:01:27,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-23 08:01:27,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 290. [2023-11-23 08:01:27,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 188 states have (on average 1.2074468085106382) internal successors, (227), 197 states have internal predecessors, (227), 61 states have call successors, (61), 35 states have call predecessors, (61), 40 states have return successors, (66), 57 states have call predecessors, (66), 57 states have call successors, (66) [2023-11-23 08:01:27,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 354 transitions. [2023-11-23 08:01:27,763 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 354 transitions. Word has length 78 [2023-11-23 08:01:27,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:01:27,763 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 354 transitions. [2023-11-23 08:01:27,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 08:01:27,764 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 354 transitions. [2023-11-23 08:01:27,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-23 08:01:27,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:01:27,766 INFO L195 NwaCegarLoop]: trace histogram [12, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:01:27,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 08:01:27,976 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,SelfDestructingSolverStorable11 [2023-11-23 08:01:27,976 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:01:27,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:01:27,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1929031157, now seen corresponding path program 2 times [2023-11-23 08:01:27,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:01:27,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509165684] [2023-11-23 08:01:27,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:01:27,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:01:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:28,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:01:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:28,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:01:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:28,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:01:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:28,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 08:01:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:28,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:01:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:28,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:01:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:28,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:01:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:28,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:01:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:29,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:01:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:29,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:01:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:29,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:01:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:29,070 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 08:01:29,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:01:29,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509165684] [2023-11-23 08:01:29,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509165684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:01:29,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169092543] [2023-11-23 08:01:29,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:01:29,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:01:29,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:01:29,072 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:01:29,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 08:01:29,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:01:29,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:01:29,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 2222 conjuncts, 93 conjunts are in the unsatisfiable core [2023-11-23 08:01:29,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:01:29,705 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 08:01:29,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 08:01:29,776 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:29,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-23 08:01:29,812 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:29,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-23 08:01:29,851 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:29,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2023-11-23 08:01:29,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:29,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 68 [2023-11-23 08:01:29,958 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:29,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2023-11-23 08:01:30,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:30,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2023-11-23 08:01:30,091 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:30,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2023-11-23 08:01:30,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:30,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2023-11-23 08:01:30,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:30,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 102 treesize of output 128 [2023-11-23 08:01:30,379 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:30,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 111 treesize of output 140 [2023-11-23 08:01:31,820 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 08:01:31,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:01:32,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169092543] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:01:32,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:01:32,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23] total 40 [2023-11-23 08:01:32,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781690214] [2023-11-23 08:01:32,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:01:32,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-23 08:01:32,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:01:32,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-23 08:01:32,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=2318, Unknown=0, NotChecked=0, Total=2450 [2023-11-23 08:01:32,738 INFO L87 Difference]: Start difference. First operand 290 states and 354 transitions. Second operand has 40 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 35 states have internal predecessors, (73), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:01:42,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:01:42,005 INFO L93 Difference]: Finished difference Result 623 states and 759 transitions. [2023-11-23 08:01:42,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-23 08:01:42,005 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 35 states have internal predecessors, (73), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 78 [2023-11-23 08:01:42,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:01:42,007 INFO L225 Difference]: With dead ends: 623 [2023-11-23 08:01:42,007 INFO L226 Difference]: Without dead ends: 353 [2023-11-23 08:01:42,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=387, Invalid=5313, Unknown=0, NotChecked=0, Total=5700 [2023-11-23 08:01:42,009 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 344 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 5412 mSolverCounterSat, 185 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 5600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 5412 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:01:42,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 2463 Invalid, 5600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 5412 Invalid, 3 Unknown, 0 Unchecked, 7.3s Time] [2023-11-23 08:01:42,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-11-23 08:01:42,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 297. [2023-11-23 08:01:42,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 195 states have (on average 1.2205128205128206) internal successors, (238), 204 states have internal predecessors, (238), 61 states have call successors, (61), 35 states have call predecessors, (61), 40 states have return successors, (66), 57 states have call predecessors, (66), 57 states have call successors, (66) [2023-11-23 08:01:42,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 365 transitions. [2023-11-23 08:01:42,045 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 365 transitions. Word has length 78 [2023-11-23 08:01:42,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:01:42,046 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 365 transitions. [2023-11-23 08:01:42,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 35 states have internal predecessors, (73), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:01:42,046 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 365 transitions. [2023-11-23 08:01:42,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 08:01:42,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:01:42,047 INFO L195 NwaCegarLoop]: trace histogram [13, 5, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:01:42,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 08:01:42,260 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,SelfDestructingSolverStorable12 [2023-11-23 08:01:42,261 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:01:42,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:01:42,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1602794369, now seen corresponding path program 3 times [2023-11-23 08:01:42,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:01:42,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976488099] [2023-11-23 08:01:42,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:01:42,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:01:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:42,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:01:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:42,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:01:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:42,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:01:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:42,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 08:01:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:42,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:01:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:42,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:01:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:42,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:01:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:43,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:01:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:43,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:01:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:43,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:01:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:43,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:01:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:43,251 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 08:01:43,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:01:43,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976488099] [2023-11-23 08:01:43,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976488099] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:01:43,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176111310] [2023-11-23 08:01:43,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:01:43,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:01:43,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:01:43,252 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:01:43,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 08:01:49,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-23 08:01:49,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:01:49,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 2248 conjuncts, 94 conjunts are in the unsatisfiable core [2023-11-23 08:01:49,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:01:49,642 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 08:01:49,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 08:01:49,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:49,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-23 08:01:49,739 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:49,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-23 08:01:49,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:49,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2023-11-23 08:01:49,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:49,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 68 [2023-11-23 08:01:49,896 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:49,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2023-11-23 08:01:49,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:49,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2023-11-23 08:01:50,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:50,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2023-11-23 08:01:50,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:50,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2023-11-23 08:01:50,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:50,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 102 treesize of output 128 [2023-11-23 08:01:50,322 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:50,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 111 treesize of output 140 [2023-11-23 08:01:50,458 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:50,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 120 treesize of output 152 [2023-11-23 08:01:50,672 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 08:01:50,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:01:50,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176111310] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:01:50,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:01:50,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 35 [2023-11-23 08:01:50,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177620186] [2023-11-23 08:01:50,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:01:50,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-23 08:01:50,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:01:50,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-23 08:01:50,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1392, Unknown=0, NotChecked=0, Total=1482 [2023-11-23 08:01:50,993 INFO L87 Difference]: Start difference. First operand 297 states and 365 transitions. Second operand has 35 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 31 states have internal predecessors, (67), 2 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 08:01:55,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:01:55,753 INFO L93 Difference]: Finished difference Result 594 states and 728 transitions. [2023-11-23 08:01:55,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 08:01:55,753 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 31 states have internal predecessors, (67), 2 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 81 [2023-11-23 08:01:55,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:01:55,755 INFO L225 Difference]: With dead ends: 594 [2023-11-23 08:01:55,755 INFO L226 Difference]: Without dead ends: 322 [2023-11-23 08:01:55,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=228, Invalid=2964, Unknown=0, NotChecked=0, Total=3192 [2023-11-23 08:01:55,758 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 157 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 2841 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 2929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:01:55,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 1737 Invalid, 2929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2841 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-23 08:01:55,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-11-23 08:01:55,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 298. [2023-11-23 08:01:55,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 196 states have (on average 1.219387755102041) internal successors, (239), 205 states have internal predecessors, (239), 61 states have call successors, (61), 35 states have call predecessors, (61), 40 states have return successors, (66), 57 states have call predecessors, (66), 57 states have call successors, (66) [2023-11-23 08:01:55,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 366 transitions. [2023-11-23 08:01:55,795 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 366 transitions. Word has length 81 [2023-11-23 08:01:55,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:01:55,795 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 366 transitions. [2023-11-23 08:01:55,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 31 states have internal predecessors, (67), 2 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 08:01:55,795 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 366 transitions. [2023-11-23 08:01:55,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 08:01:55,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:01:55,796 INFO L195 NwaCegarLoop]: trace histogram [14, 5, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:01:55,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 08:01:56,008 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,SelfDestructingSolverStorable13 [2023-11-23 08:01:56,008 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:01:56,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:01:56,009 INFO L85 PathProgramCache]: Analyzing trace with hash -173389593, now seen corresponding path program 4 times [2023-11-23 08:01:56,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:01:56,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733776960] [2023-11-23 08:01:56,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:01:56,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:01:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:56,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:01:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:56,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:01:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:56,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:01:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:56,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 08:01:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:56,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:01:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:56,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:01:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:56,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:01:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:56,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:01:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:56,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:01:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:57,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:01:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:57,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:01:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:57,023 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 08:01:57,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:01:57,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733776960] [2023-11-23 08:01:57,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733776960] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:01:57,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278948005] [2023-11-23 08:01:57,024 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 08:01:57,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:01:57,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:01:57,028 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:01:57,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 08:01:57,508 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 08:01:57,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:01:57,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 2267 conjuncts, 97 conjunts are in the unsatisfiable core [2023-11-23 08:01:57,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:01:57,526 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 08:01:57,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 08:01:57,578 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:57,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-23 08:01:57,612 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:57,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-23 08:01:57,652 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:57,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2023-11-23 08:01:57,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:57,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 68 [2023-11-23 08:01:57,785 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:57,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2023-11-23 08:01:57,853 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:57,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2023-11-23 08:01:57,924 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:57,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2023-11-23 08:01:57,998 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:57,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2023-11-23 08:01:58,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:58,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 102 treesize of output 128 [2023-11-23 08:01:58,188 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:58,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 111 treesize of output 140 [2023-11-23 08:01:58,297 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:58,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 120 treesize of output 152 [2023-11-23 08:01:58,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:01:58,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 129 treesize of output 164 [2023-11-23 08:02:00,248 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 08:02:00,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:02:01,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278948005] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:02:01,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:02:01,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26] total 45 [2023-11-23 08:02:01,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707927795] [2023-11-23 08:02:01,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:02:01,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-23 08:02:01,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:02:01,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-23 08:02:01,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2931, Unknown=0, NotChecked=0, Total=3080 [2023-11-23 08:02:01,311 INFO L87 Difference]: Start difference. First operand 298 states and 366 transitions. Second operand has 45 states, 44 states have (on average 1.7954545454545454) internal successors, (79), 40 states have internal predecessors, (79), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:02:12,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:02:12,188 INFO L93 Difference]: Finished difference Result 646 states and 790 transitions. [2023-11-23 08:02:12,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-23 08:02:12,189 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.7954545454545454) internal successors, (79), 40 states have internal predecessors, (79), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 82 [2023-11-23 08:02:12,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:02:12,190 INFO L225 Difference]: With dead ends: 646 [2023-11-23 08:02:12,190 INFO L226 Difference]: Without dead ends: 370 [2023-11-23 08:02:12,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=436, Invalid=6704, Unknown=0, NotChecked=0, Total=7140 [2023-11-23 08:02:12,192 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 513 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 5108 mSolverCounterSat, 330 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 5441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 5108 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:02:12,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 1948 Invalid, 5441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 5108 Invalid, 3 Unknown, 0 Unchecked, 8.4s Time] [2023-11-23 08:02:12,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-23 08:02:12,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 303. [2023-11-23 08:02:12,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 201 states have (on average 1.2238805970149254) internal successors, (246), 210 states have internal predecessors, (246), 61 states have call successors, (61), 35 states have call predecessors, (61), 40 states have return successors, (66), 57 states have call predecessors, (66), 57 states have call successors, (66) [2023-11-23 08:02:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 373 transitions. [2023-11-23 08:02:12,238 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 373 transitions. Word has length 82 [2023-11-23 08:02:12,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:02:12,238 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 373 transitions. [2023-11-23 08:02:12,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.7954545454545454) internal successors, (79), 40 states have internal predecessors, (79), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:02:12,238 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 373 transitions. [2023-11-23 08:02:12,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-23 08:02:12,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:02:12,239 INFO L195 NwaCegarLoop]: trace histogram [15, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:02:12,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 08:02:12,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:02:12,457 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:02:12,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:02:12,457 INFO L85 PathProgramCache]: Analyzing trace with hash 138211419, now seen corresponding path program 5 times [2023-11-23 08:02:12,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:02:12,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397499719] [2023-11-23 08:02:12,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:02:12,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:02:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:13,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:02:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:13,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:02:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:13,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:02:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:13,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 08:02:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:13,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:02:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:13,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:02:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:13,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:02:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:13,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:02:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:13,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:02:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:13,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:02:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:13,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 08:02:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:13,623 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 08:02:13,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:02:13,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397499719] [2023-11-23 08:02:13,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397499719] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:02:13,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387300650] [2023-11-23 08:02:13,623 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-23 08:02:13,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:02:13,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:02:13,624 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:02:13,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 08:02:15,593 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-11-23 08:02:15,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:02:15,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 2293 conjuncts, 104 conjunts are in the unsatisfiable core [2023-11-23 08:02:15,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:02:15,629 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 08:02:15,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 08:02:15,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:02:15,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-23 08:02:15,744 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:02:15,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-23 08:02:15,793 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:02:15,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2023-11-23 08:02:15,848 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:02:15,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 68 [2023-11-23 08:02:15,908 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:02:15,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2023-11-23 08:02:16,002 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:02:16,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2023-11-23 08:02:16,091 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:02:16,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2023-11-23 08:02:16,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:02:16,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2023-11-23 08:02:16,291 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:02:16,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 102 treesize of output 128 [2023-11-23 08:02:16,388 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:02:16,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 111 treesize of output 140 [2023-11-23 08:02:16,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:02:16,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 120 treesize of output 152 [2023-11-23 08:02:16,723 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:02:16,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 129 treesize of output 164 [2023-11-23 08:02:16,854 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:02:16,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 213 treesize of output 173 [2023-11-23 08:02:19,472 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.base_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset_BEFORE_CALL_24| Int)) (let ((.cse1 (select |c_#memory_int| |v_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.base_BEFORE_CALL_32|))) (let ((.cse0 (select .cse1 (+ |v_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset_BEFORE_CALL_24| 2)))) (and (= .cse0 (select .cse1 (+ |v_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset_BEFORE_CALL_24| 8))) (= .cse0 (select .cse1 (+ |v_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset_BEFORE_CALL_24| 4))) (= (select .cse1 (+ |v_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset_BEFORE_CALL_24| 10)) .cse0) (= .cse0 (select .cse1 (+ |v_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset_BEFORE_CALL_24| 13))) (= .cse0 (select .cse1 (+ |v_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset_BEFORE_CALL_24| 6))) (= .cse0 (select .cse1 (+ |v_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset_BEFORE_CALL_24| 14))) (= .cse0 (select .cse1 (+ 5 |v_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset_BEFORE_CALL_24|))) (= .cse0 (select .cse1 |v_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset_BEFORE_CALL_24|)) (= .cse0 (select .cse1 (+ |v_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset_BEFORE_CALL_24| 11))) (= .cse0 (select .cse1 (+ |v_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset_BEFORE_CALL_24| 3))) (= .cse0 (select .cse1 (+ |v_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset_BEFORE_CALL_24| 12))) (= (select .cse1 (+ 7 |v_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset_BEFORE_CALL_24|)) .cse0) (= .cse0 (select .cse1 (+ |v_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset_BEFORE_CALL_24| 9))) (= .cse0 (select .cse1 (+ |v_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset_BEFORE_CALL_24| 1))))))) is different from true [2023-11-23 08:02:21,298 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 08:02:21,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:02:22,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387300650] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:02:22,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:02:22,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 29] total 49 [2023-11-23 08:02:22,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087028017] [2023-11-23 08:02:22,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:02:22,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-23 08:02:22,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:02:22,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-23 08:02:22,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=3119, Unknown=1, NotChecked=112, Total=3422 [2023-11-23 08:02:22,976 INFO L87 Difference]: Start difference. First operand 303 states and 373 transitions. Second operand has 49 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 44 states have internal predecessors, (83), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:02:30,834 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 08:02:32,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:02:32,482 INFO L93 Difference]: Finished difference Result 604 states and 742 transitions. [2023-11-23 08:02:32,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-23 08:02:32,482 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 44 states have internal predecessors, (83), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 85 [2023-11-23 08:02:32,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:02:32,483 INFO L225 Difference]: With dead ends: 604 [2023-11-23 08:02:32,483 INFO L226 Difference]: Without dead ends: 328 [2023-11-23 08:02:32,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1109 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=349, Invalid=5660, Unknown=1, NotChecked=152, Total=6162 [2023-11-23 08:02:32,487 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 127 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 196 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:02:32,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1295 Invalid, 2681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2437 Invalid, 1 Unknown, 196 Unchecked, 8.0s Time] [2023-11-23 08:02:32,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-11-23 08:02:32,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 304. [2023-11-23 08:02:32,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 202 states have (on average 1.2227722772277227) internal successors, (247), 211 states have internal predecessors, (247), 61 states have call successors, (61), 35 states have call predecessors, (61), 40 states have return successors, (66), 57 states have call predecessors, (66), 57 states have call successors, (66) [2023-11-23 08:02:32,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 374 transitions. [2023-11-23 08:02:32,556 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 374 transitions. Word has length 85 [2023-11-23 08:02:32,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:02:32,556 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 374 transitions. [2023-11-23 08:02:32,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 44 states have internal predecessors, (83), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:02:32,556 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 374 transitions. [2023-11-23 08:02:32,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 08:02:32,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:02:32,558 INFO L195 NwaCegarLoop]: trace histogram [16, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:02:32,579 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 08:02:32,771 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,SelfDestructingSolverStorable15 [2023-11-23 08:02:32,771 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:02:32,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:02:32,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1498118339, now seen corresponding path program 6 times [2023-11-23 08:02:32,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:02:32,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586084811] [2023-11-23 08:02:32,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:02:32,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:02:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:33,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:02:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:33,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:02:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:33,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:02:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:33,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 08:02:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:33,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:02:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:33,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:02:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:33,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:02:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:33,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:02:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:33,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:02:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:33,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:02:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:33,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:02:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:33,978 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 08:02:33,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:02:33,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586084811] [2023-11-23 08:02:33,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586084811] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:02:33,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373270747] [2023-11-23 08:02:33,979 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-23 08:02:33,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:02:33,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:02:33,984 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 08:02:33,985 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 08:03:14,219 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-11-23 08:03:14,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:03:14,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 2312 conjuncts, 106 conjunts are in the unsatisfiable core [2023-11-23 08:03:14,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:03:14,271 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 08:03:14,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 08:03:14,335 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:14,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-23 08:03:14,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:14,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-23 08:03:14,423 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:14,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2023-11-23 08:03:14,477 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:14,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 68 [2023-11-23 08:03:14,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:14,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2023-11-23 08:03:14,641 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:14,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2023-11-23 08:03:14,726 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:14,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2023-11-23 08:03:14,811 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:14,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2023-11-23 08:03:14,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:14,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 102 treesize of output 128 [2023-11-23 08:03:15,090 INFO L349 Elim1Store]: treesize reduction 196, result has 33.3 percent of original size [2023-11-23 08:03:15,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 111 treesize of output 140 [2023-11-23 08:03:15,278 INFO L349 Elim1Store]: treesize reduction 196, result has 33.3 percent of original size [2023-11-23 08:03:15,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 111 treesize of output 140 [2023-11-23 08:03:15,467 INFO L349 Elim1Store]: treesize reduction 196, result has 33.3 percent of original size [2023-11-23 08:03:15,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 111 treesize of output 140 [2023-11-23 08:03:15,657 INFO L349 Elim1Store]: treesize reduction 196, result has 33.3 percent of original size [2023-11-23 08:03:15,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 111 treesize of output 140 [2023-11-23 08:03:15,858 INFO L349 Elim1Store]: treesize reduction 196, result has 33.3 percent of original size [2023-11-23 08:03:15,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 111 treesize of output 140 [2023-11-23 08:03:17,886 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-23 08:03:17,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:03:19,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373270747] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:03:19,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:03:19,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 46 [2023-11-23 08:03:19,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107126352] [2023-11-23 08:03:19,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:03:19,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-23 08:03:19,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:03:19,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-23 08:03:19,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=3255, Unknown=0, NotChecked=0, Total=3422 [2023-11-23 08:03:19,495 INFO L87 Difference]: Start difference. First operand 304 states and 374 transitions. Second operand has 46 states, 45 states have (on average 1.8) internal successors, (81), 41 states have internal predecessors, (81), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:03:32,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:03:32,621 INFO L93 Difference]: Finished difference Result 669 states and 819 transitions. [2023-11-23 08:03:32,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-23 08:03:32,622 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.8) internal successors, (81), 41 states have internal predecessors, (81), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 86 [2023-11-23 08:03:32,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:03:32,623 INFO L225 Difference]: With dead ends: 669 [2023-11-23 08:03:32,623 INFO L226 Difference]: Without dead ends: 389 [2023-11-23 08:03:32,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 99 SyntacticMatches, 5 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=518, Invalid=7854, Unknown=0, NotChecked=0, Total=8372 [2023-11-23 08:03:32,626 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 581 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 4765 mSolverCounterSat, 337 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 5105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 4765 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:03:32,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 1617 Invalid, 5105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 4765 Invalid, 3 Unknown, 0 Unchecked, 10.1s Time] [2023-11-23 08:03:32,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-11-23 08:03:32,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 309. [2023-11-23 08:03:32,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 207 states have (on average 1.2270531400966183) internal successors, (254), 216 states have internal predecessors, (254), 61 states have call successors, (61), 35 states have call predecessors, (61), 40 states have return successors, (66), 57 states have call predecessors, (66), 57 states have call successors, (66) [2023-11-23 08:03:32,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 381 transitions. [2023-11-23 08:03:32,678 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 381 transitions. Word has length 86 [2023-11-23 08:03:32,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:03:32,678 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 381 transitions. [2023-11-23 08:03:32,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.8) internal successors, (81), 41 states have internal predecessors, (81), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:03:32,678 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 381 transitions. [2023-11-23 08:03:32,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-23 08:03:32,679 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:03:32,679 INFO L195 NwaCegarLoop]: trace histogram [17, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:03:32,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-23 08:03:32,893 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,SelfDestructingSolverStorable16 [2023-11-23 08:03:32,893 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:03:32,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:03:32,893 INFO L85 PathProgramCache]: Analyzing trace with hash -96826057, now seen corresponding path program 7 times [2023-11-23 08:03:32,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:03:32,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172264954] [2023-11-23 08:03:32,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:03:32,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:03:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:03:33,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:03:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:03:33,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:03:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:03:33,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:03:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:03:33,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 08:03:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:03:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:03:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:03:33,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:03:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:03:33,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:03:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:03:34,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:03:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:03:34,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:03:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:03:34,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:03:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:03:34,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:03:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:03:34,165 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-23 08:03:34,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:03:34,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172264954] [2023-11-23 08:03:34,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172264954] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:03:34,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066861532] [2023-11-23 08:03:34,166 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-23 08:03:34,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:03:34,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:03:34,167 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 08:03:34,168 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 08:03:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:03:35,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 2338 conjuncts, 110 conjunts are in the unsatisfiable core [2023-11-23 08:03:35,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:03:35,301 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 08:03:35,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 08:03:35,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:35,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-23 08:03:35,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:35,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-23 08:03:35,463 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:35,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2023-11-23 08:03:35,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:35,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 68 [2023-11-23 08:03:35,591 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:35,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2023-11-23 08:03:35,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:35,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2023-11-23 08:03:35,757 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:35,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2023-11-23 08:03:35,851 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:35,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2023-11-23 08:03:35,983 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:35,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 102 treesize of output 128 [2023-11-23 08:03:36,098 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:36,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 111 treesize of output 140 [2023-11-23 08:03:36,222 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:36,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 120 treesize of output 152 [2023-11-23 08:03:36,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:36,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 129 treesize of output 164 [2023-11-23 08:03:36,490 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:36,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 138 treesize of output 176 [2023-11-23 08:03:36,642 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:36,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 147 treesize of output 188 [2023-11-23 08:03:36,796 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:03:36,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 156 treesize of output 200 [2023-11-23 08:03:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 08:03:40,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:03:46,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066861532] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:03:46,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:03:46,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 32] total 54 [2023-11-23 08:03:46,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657628763] [2023-11-23 08:03:46,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:03:46,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-11-23 08:03:46,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:03:46,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-11-23 08:03:46,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=3945, Unknown=2, NotChecked=0, Total=4160 [2023-11-23 08:03:46,342 INFO L87 Difference]: Start difference. First operand 309 states and 381 transitions. Second operand has 54 states, 53 states have (on average 1.679245283018868) internal successors, (89), 49 states have internal predecessors, (89), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:03:59,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:03:59,895 INFO L93 Difference]: Finished difference Result 687 states and 843 transitions. [2023-11-23 08:03:59,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-23 08:03:59,895 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.679245283018868) internal successors, (89), 49 states have internal predecessors, (89), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 89 [2023-11-23 08:03:59,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:03:59,897 INFO L225 Difference]: With dead ends: 687 [2023-11-23 08:03:59,897 INFO L226 Difference]: Without dead ends: 403 [2023-11-23 08:03:59,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1946 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=578, Invalid=9320, Unknown=2, NotChecked=0, Total=9900 [2023-11-23 08:03:59,899 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 532 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 6079 mSolverCounterSat, 273 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 2249 SdHoareTripleChecker+Invalid, 6355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 6079 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:03:59,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 2249 Invalid, 6355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 6079 Invalid, 3 Unknown, 0 Unchecked, 9.9s Time] [2023-11-23 08:03:59,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2023-11-23 08:03:59,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 314. [2023-11-23 08:03:59,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 212 states have (on average 1.2311320754716981) internal successors, (261), 221 states have internal predecessors, (261), 61 states have call successors, (61), 35 states have call predecessors, (61), 40 states have return successors, (66), 57 states have call predecessors, (66), 57 states have call successors, (66) [2023-11-23 08:03:59,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 388 transitions. [2023-11-23 08:03:59,962 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 388 transitions. Word has length 89 [2023-11-23 08:03:59,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:03:59,962 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 388 transitions. [2023-11-23 08:03:59,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.679245283018868) internal successors, (89), 49 states have internal predecessors, (89), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:03:59,962 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 388 transitions. [2023-11-23 08:03:59,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-23 08:03:59,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:03:59,963 INFO L195 NwaCegarLoop]: trace histogram [18, 7, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:03:59,984 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 08:04:00,182 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,SelfDestructingSolverStorable17 [2023-11-23 08:04:00,182 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:00,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:00,183 INFO L85 PathProgramCache]: Analyzing trace with hash 219361403, now seen corresponding path program 8 times [2023-11-23 08:04:00,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:00,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890059335] [2023-11-23 08:04:00,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:00,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:00,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:04:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:00,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:04:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:00,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:04:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:00,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 08:04:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:00,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:04:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:00,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:04:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:00,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:04:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:01,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:04:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:01,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:04:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:01,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:04:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:01,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:04:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-23 08:04:01,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:01,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890059335] [2023-11-23 08:04:01,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890059335] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:04:01,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571378994] [2023-11-23 08:04:01,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:04:01,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:01,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:01,531 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 08:04:01,532 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 08:04:03,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:04:03,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:04:03,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 2364 conjuncts, 129 conjunts are in the unsatisfiable core [2023-11-23 08:04:03,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:03,234 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 08:04:03,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 08:04:03,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:04:03,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-23 08:04:03,360 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:04:03,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-23 08:04:03,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:04:03,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2023-11-23 08:04:03,478 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:04:03,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 68 [2023-11-23 08:04:03,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:04:03,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2023-11-23 08:04:03,635 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:04:03,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2023-11-23 08:04:03,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:04:03,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2023-11-23 08:04:03,812 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:04:03,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2023-11-23 08:04:03,923 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:04:03,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 102 treesize of output 128 [2023-11-23 08:04:04,032 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:04:04,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 111 treesize of output 140 [2023-11-23 08:04:04,157 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:04:04,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 120 treesize of output 152 [2023-11-23 08:04:04,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:04:04,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 129 treesize of output 164 [2023-11-23 08:04:04,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:04:04,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 138 treesize of output 176 [2023-11-23 08:04:04,610 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:04:04,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 147 treesize of output 188 [2023-11-23 08:04:04,826 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:04:04,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 156 treesize of output 200 [2023-11-23 08:04:04,999 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:04:04,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 165 treesize of output 212 [2023-11-23 08:04:05,356 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-23 08:04:05,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:04:07,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571378994] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:04:07,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:04:07,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22] total 45 [2023-11-23 08:04:07,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115551414] [2023-11-23 08:04:07,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:04:07,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-23 08:04:07,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:07,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-23 08:04:07,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=3251, Unknown=0, NotChecked=0, Total=3422 [2023-11-23 08:04:07,184 INFO L87 Difference]: Start difference. First operand 314 states and 388 transitions. Second operand has 45 states, 43 states have (on average 1.7906976744186047) internal successors, (77), 41 states have internal predecessors, (77), 2 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Killed by 15