./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_cat_harness_negated.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_cat_harness_negated.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 405c1ec90d5a90e81495140f9bf47a8a22bd7e0c555d7b6deaec7143608df286 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:09:20,114 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:09:20,166 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:09:20,173 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:09:20,174 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:09:20,193 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:09:20,196 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:09:20,196 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:09:20,197 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:09:20,200 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:09:20,201 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:09:20,201 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:09:20,201 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:09:20,203 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:09:20,203 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:09:20,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:09:20,203 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:09:20,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:09:20,204 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:09:20,204 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:09:20,204 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:09:20,205 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:09:20,205 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:09:20,205 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:09:20,206 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:09:20,206 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:09:20,206 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:09:20,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:09:20,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:09:20,207 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:09:20,208 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:09:20,208 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:09:20,208 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:09:20,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:09:20,208 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:09:20,208 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:09:20,209 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:09:20,209 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:09:20,209 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:09:20,209 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 405c1ec90d5a90e81495140f9bf47a8a22bd7e0c555d7b6deaec7143608df286 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:09:20,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:09:20,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:09:20,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:09:20,529 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:09:20,529 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:09:20,530 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_cat_harness_negated.i [2023-11-23 08:09:21,653 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:09:22,050 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:09:22,051 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_cat_harness_negated.i [2023-11-23 08:09:22,083 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efbd78d1b/4eeff6d06f3b4463a7e6c76db36005ca/FLAG40a05b0f2 [2023-11-23 08:09:22,098 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efbd78d1b/4eeff6d06f3b4463a7e6c76db36005ca [2023-11-23 08:09:22,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:09:22,103 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:09:22,106 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:09:22,106 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:09:22,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:09:22,111 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:09:22" (1/1) ... [2023-11-23 08:09:22,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a664829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:09:22, skipping insertion in model container [2023-11-23 08:09:22,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:09:22" (1/1) ... [2023-11-23 08:09:22,209 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:09:22,431 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_byte_buf_cat_harness_negated.i[4490,4503] [2023-11-23 08:09:22,439 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_byte_buf_cat_harness_negated.i[4550,4563] [2023-11-23 08:09:22,990 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:22,992 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:22,993 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:22,994 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:22,995 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:23,017 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:23,024 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:23,025 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:23,026 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:23,501 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:09:23,502 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:09:23,502 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:09:23,503 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:09:23,504 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:09:23,505 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:09:23,505 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:09:23,506 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:09:23,506 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:09:23,507 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:09:23,837 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:23,841 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:23,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:09:23,947 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:09:23,963 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_byte_buf_cat_harness_negated.i[4490,4503] [2023-11-23 08:09:23,964 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_byte_buf_cat_harness_negated.i[4550,4563] [2023-11-23 08:09:24,004 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:24,005 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:24,005 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:24,006 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:24,006 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:24,017 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:24,018 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:24,020 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:24,021 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:24,061 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:09:24,062 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:09:24,062 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:09:24,063 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:09:24,066 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:09:24,066 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:09:24,067 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:09:24,068 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:09:24,068 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:09:24,068 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:09:24,142 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8245] [2023-11-23 08:09:24,143 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:24,144 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:09:24,158 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8731-8742] [2023-11-23 08:09:24,175 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:09:24,358 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:09:24,358 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:09:24,358 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:09:24,358 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:09:24,359 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:09:24,359 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:09:24,359 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:09:24,359 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:09:24,359 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:09:24,359 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:09:24,360 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:09:24,360 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:09:24,360 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:09:24,360 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:09:24,361 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:09:24,361 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:09:24,361 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:09:24,361 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:09:24,367 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:09:24,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:09:24 WrapperNode [2023-11-23 08:09:24,368 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:09:24,369 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:09:24,369 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:09:24,369 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:09:24,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:09:24" (1/1) ... [2023-11-23 08:09:24,438 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:09:24" (1/1) ... [2023-11-23 08:09:24,519 INFO L138 Inliner]: procedures = 690, calls = 2731, calls flagged for inlining = 59, calls inlined = 8, statements flattened = 1083 [2023-11-23 08:09:24,519 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:09:24,520 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:09:24,520 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:09:24,520 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:09:24,529 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:09:24" (1/1) ... [2023-11-23 08:09:24,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:09:24" (1/1) ... [2023-11-23 08:09:24,546 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:09:24" (1/1) ... [2023-11-23 08:09:24,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:09:24" (1/1) ... [2023-11-23 08:09:24,582 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:09:24" (1/1) ... [2023-11-23 08:09:24,590 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:09:24" (1/1) ... [2023-11-23 08:09:24,605 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:09:24" (1/1) ... [2023-11-23 08:09:24,609 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:09:24" (1/1) ... [2023-11-23 08:09:24,629 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:09:24,630 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:09:24,630 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:09:24,630 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:09:24,630 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:09:24" (1/1) ... [2023-11-23 08:09:24,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:09:24,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:09:24,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 08:09:24,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 08:09:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 08:09:24,819 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 08:09:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 08:09:24,820 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 08:09:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:09:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:09:24,821 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:09:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-23 08:09:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 08:09:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 08:09:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:09:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 08:09:24,822 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 08:09:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 08:09:24,822 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 08:09:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:09:24,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:09:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:09:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:09:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-23 08:09:24,823 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-23 08:09:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:09:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 08:09:24,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 08:09:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:09:24,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:09:24,824 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:09:24,824 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:09:24,824 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 08:09:24,825 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 08:09:24,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 08:09:24,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 08:09:24,825 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:09:24,825 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:09:24,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:09:24,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:09:24,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:09:24,826 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 08:09:24,826 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 08:09:24,826 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2023-11-23 08:09:24,826 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2023-11-23 08:09:24,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:09:24,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-23 08:09:24,827 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2023-11-23 08:09:24,827 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2023-11-23 08:09:24,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:09:25,140 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:09:25,141 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:09:25,969 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:09:26,055 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:09:26,056 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 08:09:26,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:09:26 BoogieIcfgContainer [2023-11-23 08:09:26,057 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:09:26,058 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:09:26,058 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:09:26,061 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:09:26,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:09:22" (1/3) ... [2023-11-23 08:09:26,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df49242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:09:26, skipping insertion in model container [2023-11-23 08:09:26,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:09:24" (2/3) ... [2023-11-23 08:09:26,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df49242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:09:26, skipping insertion in model container [2023-11-23 08:09:26,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:09:26" (3/3) ... [2023-11-23 08:09:26,063 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_cat_harness_negated.i [2023-11-23 08:09:26,075 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:09:26,075 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:09:26,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:09:26,115 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;@3723e797, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:09:26,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:09:26,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 106 states have (on average 1.2641509433962264) internal successors, (134), 107 states have internal predecessors, (134), 72 states have call successors, (72), 14 states have call predecessors, (72), 14 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-11-23 08:09:26,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-23 08:09:26,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:26,131 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 08:09:26,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:26,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:26,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1526081347, now seen corresponding path program 1 times [2023-11-23 08:09:26,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:26,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938042299] [2023-11-23 08:09:26,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:26,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:09:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:09:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:09:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:09:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:09:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:09:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:09:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:09:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:09:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:09:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:09:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 08:09:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:09:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 08:09:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:26,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 08:09:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:27,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 08:09:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:27,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-23 08:09:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:27,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-23 08:09:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:27,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-23 08:09:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:27,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 08:09:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:27,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 08:09:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:27,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-11-23 08:09:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:27,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-23 08:09:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:27,092 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-11-23 08:09:27,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:27,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938042299] [2023-11-23 08:09:27,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938042299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:09:27,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:09:27,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:09:27,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128941963] [2023-11-23 08:09:27,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:09:27,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:09:27,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:27,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:09:27,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:09:27,163 INFO L87 Difference]: Start difference. First operand has 194 states, 106 states have (on average 1.2641509433962264) internal successors, (134), 107 states have internal predecessors, (134), 72 states have call successors, (72), 14 states have call predecessors, (72), 14 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-23 08:09:28,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:09:28,297 INFO L93 Difference]: Finished difference Result 390 states and 607 transitions. [2023-11-23 08:09:28,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:09:28,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 190 [2023-11-23 08:09:28,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:09:28,309 INFO L225 Difference]: With dead ends: 390 [2023-11-23 08:09:28,309 INFO L226 Difference]: Without dead ends: 197 [2023-11-23 08:09:28,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:09:28,316 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 171 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:09:28,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 243 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 08:09:28,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-23 08:09:28,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 192. [2023-11-23 08:09:28,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 105 states have (on average 1.2380952380952381) internal successors, (130), 106 states have internal predecessors, (130), 72 states have call successors, (72), 14 states have call predecessors, (72), 14 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-11-23 08:09:28,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 273 transitions. [2023-11-23 08:09:28,363 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 273 transitions. Word has length 190 [2023-11-23 08:09:28,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:09:28,364 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 273 transitions. [2023-11-23 08:09:28,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-23 08:09:28,364 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 273 transitions. [2023-11-23 08:09:28,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-23 08:09:28,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:28,367 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 08:09:28,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 08:09:28,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:28,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:28,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1113621119, now seen corresponding path program 1 times [2023-11-23 08:09:28,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:28,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551025431] [2023-11-23 08:09:28,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:28,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:09:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:09:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:09:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:09:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:09:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:28,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:09:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:09:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:09:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:09:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:09:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:09:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 08:09:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:09:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 08:09:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 08:09:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 08:09:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-23 08:09:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-23 08:09:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-23 08:09:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 08:09:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 08:09:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-11-23 08:09:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-23 08:09:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2023-11-23 08:09:29,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:29,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551025431] [2023-11-23 08:09:29,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551025431] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:09:29,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624569478] [2023-11-23 08:09:29,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:29,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:09:29,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:09:29,236 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:09:29,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 08:09:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:29,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 3286 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:09:29,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:09:29,984 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-11-23 08:09:29,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:09:29,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624569478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:09:29,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:09:29,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 08:09:29,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759656253] [2023-11-23 08:09:29,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:09:29,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:09:29,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:29,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:09:29,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:09:29,987 INFO L87 Difference]: Start difference. First operand 192 states and 273 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-11-23 08:09:30,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:09:30,463 INFO L93 Difference]: Finished difference Result 380 states and 552 transitions. [2023-11-23 08:09:30,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:09:30,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 190 [2023-11-23 08:09:30,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:09:30,466 INFO L225 Difference]: With dead ends: 380 [2023-11-23 08:09:30,466 INFO L226 Difference]: Without dead ends: 194 [2023-11-23 08:09:30,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:09:30,467 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 62 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:09:30,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 828 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:09:30,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-23 08:09:30,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-11-23 08:09:30,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 106 states have (on average 1.2358490566037736) internal successors, (131), 108 states have internal predecessors, (131), 72 states have call successors, (72), 14 states have call predecessors, (72), 15 states have return successors, (84), 71 states have call predecessors, (84), 71 states have call successors, (84) [2023-11-23 08:09:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 287 transitions. [2023-11-23 08:09:30,494 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 287 transitions. Word has length 190 [2023-11-23 08:09:30,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:09:30,496 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 287 transitions. [2023-11-23 08:09:30,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-11-23 08:09:30,497 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 287 transitions. [2023-11-23 08:09:30,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-11-23 08:09:30,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:30,500 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 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 08:09:30,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 08:09:30,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:09:30,714 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:30,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:30,715 INFO L85 PathProgramCache]: Analyzing trace with hash 602562092, now seen corresponding path program 1 times [2023-11-23 08:09:30,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:30,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475748834] [2023-11-23 08:09:30,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:30,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:09:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:09:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:09:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:09:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:09:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:09:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:09:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:09:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:09:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:09:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:09:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-23 08:09:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 08:09:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 08:09:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-23 08:09:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-23 08:09:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-23 08:09:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-23 08:09:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 08:09:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 08:09:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-23 08:09:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-11-23 08:09:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-23 08:09:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:31,491 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2023-11-23 08:09:31,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:31,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475748834] [2023-11-23 08:09:31,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475748834] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:09:31,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729524578] [2023-11-23 08:09:31,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:31,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:09:31,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:09:31,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:09:31,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 08:09:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:32,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 3303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:09:32,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:09:32,142 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-11-23 08:09:32,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:09:32,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729524578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:09:32,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:09:32,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 08:09:32,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738048162] [2023-11-23 08:09:32,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:09:32,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:09:32,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:32,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:09:32,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:09:32,144 INFO L87 Difference]: Start difference. First operand 194 states and 287 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-11-23 08:09:32,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:09:32,643 INFO L93 Difference]: Finished difference Result 375 states and 551 transitions. [2023-11-23 08:09:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:09:32,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 196 [2023-11-23 08:09:32,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:09:32,645 INFO L225 Difference]: With dead ends: 375 [2023-11-23 08:09:32,645 INFO L226 Difference]: Without dead ends: 194 [2023-11-23 08:09:32,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:09:32,647 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 60 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:09:32,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 624 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:09:32,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-23 08:09:32,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-11-23 08:09:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 106 states have (on average 1.2358490566037736) internal successors, (131), 108 states have internal predecessors, (131), 72 states have call successors, (72), 14 states have call predecessors, (72), 15 states have return successors, (82), 71 states have call predecessors, (82), 71 states have call successors, (82) [2023-11-23 08:09:32,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 285 transitions. [2023-11-23 08:09:32,661 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 285 transitions. Word has length 196 [2023-11-23 08:09:32,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:09:32,662 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 285 transitions. [2023-11-23 08:09:32,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-11-23 08:09:32,662 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 285 transitions. [2023-11-23 08:09:32,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-23 08:09:32,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:32,665 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:09:32,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 08:09:32,880 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,SelfDestructingSolverStorable2 [2023-11-23 08:09:32,880 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:32,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:32,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1928139159, now seen corresponding path program 2 times [2023-11-23 08:09:32,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:32,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76218924] [2023-11-23 08:09:32,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:32,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:09:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:09:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:09:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:09:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:09:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:09:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:09:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:09:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:09:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:09:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 08:09:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 08:09:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 08:09:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 08:09:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-23 08:09:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-23 08:09:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-23 08:09:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 08:09:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 08:09:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-23 08:09:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-23 08:09:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-11-23 08:09:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-11-23 08:09:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 423 trivial. 0 not checked. [2023-11-23 08:09:33,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:33,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76218924] [2023-11-23 08:09:33,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76218924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:09:33,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255881475] [2023-11-23 08:09:33,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:09:33,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:09:33,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:09:33,569 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:09:33,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 08:09:34,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 08:09:34,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:09:34,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 2353 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 08:09:34,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:09:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2023-11-23 08:09:34,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:09:34,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255881475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:09:34,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:09:34,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-11-23 08:09:34,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424344122] [2023-11-23 08:09:34,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:09:34,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:09:34,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:34,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:09:34,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:09:34,111 INFO L87 Difference]: Start difference. First operand 194 states and 285 transitions. Second operand has 7 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-23 08:09:35,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:09:35,619 INFO L93 Difference]: Finished difference Result 202 states and 293 transitions. [2023-11-23 08:09:35,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:09:35,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) Word has length 202 [2023-11-23 08:09:35,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:09:35,621 INFO L225 Difference]: With dead ends: 202 [2023-11-23 08:09:35,621 INFO L226 Difference]: Without dead ends: 200 [2023-11-23 08:09:35,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:09:35,622 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 5 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:09:35,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1516 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 08:09:35,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-23 08:09:35,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2023-11-23 08:09:35,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 109 states have (on average 1.2293577981651376) internal successors, (134), 111 states have internal predecessors, (134), 73 states have call successors, (73), 15 states have call predecessors, (73), 16 states have return successors, (83), 72 states have call predecessors, (83), 72 states have call successors, (83) [2023-11-23 08:09:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 290 transitions. [2023-11-23 08:09:35,633 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 290 transitions. Word has length 202 [2023-11-23 08:09:35,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:09:35,634 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 290 transitions. [2023-11-23 08:09:35,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-23 08:09:35,634 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 290 transitions. [2023-11-23 08:09:35,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-23 08:09:35,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:35,636 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:09:35,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-23 08:09:35,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:09:35,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:35,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:35,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1770610164, now seen corresponding path program 3 times [2023-11-23 08:09:35,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:35,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707005903] [2023-11-23 08:09:35,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:35,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:09:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:09:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:09:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:09:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:09:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:09:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:09:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:09:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:09:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:09:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 08:09:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 08:09:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 08:09:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 08:09:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-23 08:09:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-23 08:09:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-23 08:09:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 08:09:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 08:09:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-23 08:09:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-23 08:09:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-11-23 08:09:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-11-23 08:09:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:36,414 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-23 08:09:36,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:36,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707005903] [2023-11-23 08:09:36,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707005903] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:09:36,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514073304] [2023-11-23 08:09:36,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:09:36,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:09:36,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:09:36,416 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:09:36,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 08:09:37,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 08:09:37,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:09:37,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 08:09:37,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:09:37,614 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2023-11-23 08:09:37,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:09:37,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514073304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:09:37,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:09:37,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-23 08:09:37,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754965523] [2023-11-23 08:09:37,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:09:37,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:09:37,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:37,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:09:37,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:09:37,616 INFO L87 Difference]: Start difference. First operand 199 states and 290 transitions. Second operand has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-23 08:09:38,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:09:38,605 INFO L93 Difference]: Finished difference Result 350 states and 513 transitions. [2023-11-23 08:09:38,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:09:38,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 208 [2023-11-23 08:09:38,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:09:38,607 INFO L225 Difference]: With dead ends: 350 [2023-11-23 08:09:38,607 INFO L226 Difference]: Without dead ends: 194 [2023-11-23 08:09:38,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:09:38,608 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 78 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:09:38,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 842 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 08:09:38,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-23 08:09:38,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-11-23 08:09:38,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 106 states have (on average 1.2358490566037736) internal successors, (131), 108 states have internal predecessors, (131), 72 states have call successors, (72), 14 states have call predecessors, (72), 15 states have return successors, (77), 71 states have call predecessors, (77), 71 states have call successors, (77) [2023-11-23 08:09:38,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 280 transitions. [2023-11-23 08:09:38,625 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 280 transitions. Word has length 208 [2023-11-23 08:09:38,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:09:38,626 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 280 transitions. [2023-11-23 08:09:38,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-23 08:09:38,626 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 280 transitions. [2023-11-23 08:09:38,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-11-23 08:09:38,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:38,629 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 08:09:38,653 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 08:09:38,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:09:38,854 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:38,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:38,855 INFO L85 PathProgramCache]: Analyzing trace with hash -610962836, now seen corresponding path program 4 times [2023-11-23 08:09:38,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:38,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744946587] [2023-11-23 08:09:38,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:38,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:09:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:09:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:09:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:09:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:09:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:09:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:09:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:09:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:09:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:09:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 08:09:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 08:09:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 08:09:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 08:09:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-23 08:09:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-23 08:09:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 08:09:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 08:09:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-23 08:09:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-23 08:09:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-11-23 08:09:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-23 08:09:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-11-23 08:09:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2023-11-23 08:09:39,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:39,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744946587] [2023-11-23 08:09:39,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744946587] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:09:39,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243412885] [2023-11-23 08:09:39,617 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 08:09:39,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:09:39,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:09:39,644 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 08:09:39,645 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 08:09:40,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 08:09:40,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:09:40,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 3371 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:09:40,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:09:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-11-23 08:09:40,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:09:40,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243412885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:09:40,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:09:40,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 08:09:40,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950228599] [2023-11-23 08:09:40,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:09:40,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:09:40,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:40,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:09:40,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:09:40,315 INFO L87 Difference]: Start difference. First operand 194 states and 280 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-11-23 08:09:41,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:09:41,002 INFO L93 Difference]: Finished difference Result 366 states and 524 transitions. [2023-11-23 08:09:41,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:09:41,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 220 [2023-11-23 08:09:41,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:09:41,004 INFO L225 Difference]: With dead ends: 366 [2023-11-23 08:09:41,004 INFO L226 Difference]: Without dead ends: 194 [2023-11-23 08:09:41,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:09:41,005 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 58 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:09:41,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 855 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 08:09:41,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-23 08:09:41,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-11-23 08:09:41,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 106 states have (on average 1.2358490566037736) internal successors, (131), 108 states have internal predecessors, (131), 72 states have call successors, (72), 14 states have call predecessors, (72), 15 states have return successors, (75), 71 states have call predecessors, (75), 71 states have call successors, (75) [2023-11-23 08:09:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 278 transitions. [2023-11-23 08:09:41,016 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 278 transitions. Word has length 220 [2023-11-23 08:09:41,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:09:41,016 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 278 transitions. [2023-11-23 08:09:41,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-11-23 08:09:41,016 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 278 transitions. [2023-11-23 08:09:41,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-23 08:09:41,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:41,018 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 08:09:41,051 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 08:09:41,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:09:41,236 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:41,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:41,237 INFO L85 PathProgramCache]: Analyzing trace with hash 534281175, now seen corresponding path program 1 times [2023-11-23 08:09:41,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:41,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117167880] [2023-11-23 08:09:41,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:41,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:09:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:09:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:09:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:09:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:09:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:09:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:09:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:09:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:09:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:09:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 08:09:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 08:09:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 08:09:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 08:09:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-23 08:09:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 08:09:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 08:09:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-23 08:09:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-23 08:09:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-11-23 08:09:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-11-23 08:09:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-23 08:09:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-23 08:09:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:42,399 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked. [2023-11-23 08:09:42,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:42,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117167880] [2023-11-23 08:09:42,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117167880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:09:42,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:09:42,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 08:09:42,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417122978] [2023-11-23 08:09:42,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:09:42,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:09:42,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:42,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:09:42,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:09:42,401 INFO L87 Difference]: Start difference. First operand 194 states and 278 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 5 states have internal predecessors, (41), 4 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-23 08:09:44,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:09:44,577 INFO L93 Difference]: Finished difference Result 310 states and 456 transitions. [2023-11-23 08:09:44,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:09:44,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 5 states have internal predecessors, (41), 4 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 226 [2023-11-23 08:09:44,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:09:44,579 INFO L225 Difference]: With dead ends: 310 [2023-11-23 08:09:44,579 INFO L226 Difference]: Without dead ends: 240 [2023-11-23 08:09:44,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:09:44,580 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 370 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:09:44,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 417 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 08:09:44,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-11-23 08:09:44,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 195. [2023-11-23 08:09:44,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 107 states have (on average 1.233644859813084) internal successors, (132), 109 states have internal predecessors, (132), 72 states have call successors, (72), 14 states have call predecessors, (72), 15 states have return successors, (75), 71 states have call predecessors, (75), 71 states have call successors, (75) [2023-11-23 08:09:44,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 279 transitions. [2023-11-23 08:09:44,591 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 279 transitions. Word has length 226 [2023-11-23 08:09:44,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:09:44,591 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 279 transitions. [2023-11-23 08:09:44,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 5 states have internal predecessors, (41), 4 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-23 08:09:44,591 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 279 transitions. [2023-11-23 08:09:44,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-11-23 08:09:44,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:44,593 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 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 08:09:44,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 08:09:44,593 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:44,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:44,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1796114523, now seen corresponding path program 1 times [2023-11-23 08:09:44,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:44,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680966969] [2023-11-23 08:09:44,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:44,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:44,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:44,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:09:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:44,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:09:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:44,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:44,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:44,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:44,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:09:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:44,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:44,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:09:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:44,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:09:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:44,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:09:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:09:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:09:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:09:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:09:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 08:09:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 08:09:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 08:09:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 08:09:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-23 08:09:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 08:09:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 08:09:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-23 08:09:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-23 08:09:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-11-23 08:09:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-11-23 08:09:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-23 08:09:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-11-23 08:09:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-23 08:09:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-11-23 08:09:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2023-11-23 08:09:45,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:45,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680966969] [2023-11-23 08:09:45,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680966969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:09:45,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:09:45,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 08:09:45,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70621790] [2023-11-23 08:09:45,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:09:45,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:09:45,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:45,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:09:45,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:09:45,157 INFO L87 Difference]: Start difference. First operand 195 states and 279 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (31), 5 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-23 08:09:46,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:09:46,719 INFO L93 Difference]: Finished difference Result 334 states and 485 transitions. [2023-11-23 08:09:46,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:09:46,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (31), 5 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 230 [2023-11-23 08:09:46,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:09:46,721 INFO L225 Difference]: With dead ends: 334 [2023-11-23 08:09:46,721 INFO L226 Difference]: Without dead ends: 202 [2023-11-23 08:09:46,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:09:46,722 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 264 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:09:46,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 574 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 08:09:46,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-11-23 08:09:46,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 197. [2023-11-23 08:09:46,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 108 states have (on average 1.2314814814814814) internal successors, (133), 111 states have internal predecessors, (133), 72 states have call successors, (72), 14 states have call predecessors, (72), 16 states have return successors, (78), 71 states have call predecessors, (78), 71 states have call successors, (78) [2023-11-23 08:09:46,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 283 transitions. [2023-11-23 08:09:46,736 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 283 transitions. Word has length 230 [2023-11-23 08:09:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:09:46,736 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 283 transitions. [2023-11-23 08:09:46,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (31), 5 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-23 08:09:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 283 transitions. [2023-11-23 08:09:46,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-11-23 08:09:46,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:46,738 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:46,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 08:09:46,738 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:46,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:46,739 INFO L85 PathProgramCache]: Analyzing trace with hash -463085098, now seen corresponding path program 1 times [2023-11-23 08:09:46,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:46,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456976404] [2023-11-23 08:09:46,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:46,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:09:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:09:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:09:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:09:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:09:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:09:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:09:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:09:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:09:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:09:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 08:09:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 08:09:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 08:09:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 08:09:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:47,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-23 08:09:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:48,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 08:09:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:48,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 08:09:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:48,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-23 08:09:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:48,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-23 08:09:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:48,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-11-23 08:09:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:48,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-11-23 08:09:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:48,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-23 08:09:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:48,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-11-23 08:09:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:48,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-23 08:09:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:48,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-11-23 08:09:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2023-11-23 08:09:48,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:48,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456976404] [2023-11-23 08:09:48,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456976404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:09:48,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:09:48,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 08:09:48,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264420843] [2023-11-23 08:09:48,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:09:48,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 08:09:48,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:48,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 08:09:48,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:09:48,101 INFO L87 Difference]: Start difference. First operand 197 states and 283 transitions. Second operand has 10 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (31), 5 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-23 08:09:51,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:09:51,327 INFO L93 Difference]: Finished difference Result 337 states and 490 transitions. [2023-11-23 08:09:51,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:09:51,328 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (31), 5 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 232 [2023-11-23 08:09:51,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:09:51,330 INFO L225 Difference]: With dead ends: 337 [2023-11-23 08:09:51,330 INFO L226 Difference]: Without dead ends: 202 [2023-11-23 08:09:51,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:09:51,332 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 97 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:09:51,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 811 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-23 08:09:51,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-11-23 08:09:51,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 197. [2023-11-23 08:09:51,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 108 states have (on average 1.2314814814814814) internal successors, (133), 111 states have internal predecessors, (133), 72 states have call successors, (72), 14 states have call predecessors, (72), 16 states have return successors, (77), 71 states have call predecessors, (77), 71 states have call successors, (77) [2023-11-23 08:09:51,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 282 transitions. [2023-11-23 08:09:51,345 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 282 transitions. Word has length 232 [2023-11-23 08:09:51,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:09:51,345 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 282 transitions. [2023-11-23 08:09:51,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (31), 5 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-23 08:09:51,345 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 282 transitions. [2023-11-23 08:09:51,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-23 08:09:51,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:09:51,347 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:51,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 08:09:51,347 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:09:51,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:09:51,348 INFO L85 PathProgramCache]: Analyzing trace with hash 469211905, now seen corresponding path program 1 times [2023-11-23 08:09:51,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:09:51,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257516564] [2023-11-23 08:09:51,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:51,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:09:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:09:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:09:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:09:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:09:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:09:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:09:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:09:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:09:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:09:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:09:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:09:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 08:09:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 08:09:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 08:09:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 08:09:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:09:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:09:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-23 08:09:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 08:09:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 08:09:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-23 08:09:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-23 08:09:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-11-23 08:09:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-11-23 08:09:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-23 08:09:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-11-23 08:09:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-11-23 08:09:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-11-23 08:09:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:54,922 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 57 proven. 9 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2023-11-23 08:09:54,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:09:54,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257516564] [2023-11-23 08:09:54,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257516564] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:09:54,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569178134] [2023-11-23 08:09:54,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:09:54,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:09:54,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:09:54,936 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 08:09:54,952 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 08:09:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:09:55,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 3483 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 08:09:55,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:09:55,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:09:56,074 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 323 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-11-23 08:09:56,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:09:56,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569178134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:09:56,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:09:56,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 27 [2023-11-23 08:09:56,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000630363] [2023-11-23 08:09:56,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:09:56,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:09:56,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:09:56,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:09:56,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2023-11-23 08:09:56,078 INFO L87 Difference]: Start difference. First operand 197 states and 282 transitions. Second operand has 12 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (35), 5 states have call predecessors, (35), 4 states have call successors, (35) [2023-11-23 08:09:59,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:01,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:04,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:06,077 WARN L539 Checker$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 08:10:08,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:10,100 WARN L539 Checker$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 08:10:12,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:14,125 WARN L539 Checker$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 08:10:16,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:18,185 WARN L539 Checker$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 08:10:20,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:22,211 WARN L539 Checker$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 08:10:24,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:26,260 WARN L539 Checker$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 08:10:28,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:30,483 WARN L539 Checker$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 08:10:32,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:34,508 WARN L539 Checker$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 08:10:34,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:10:34,517 INFO L93 Difference]: Finished difference Result 408 states and 579 transitions. [2023-11-23 08:10:34,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:10:34,517 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (35), 5 states have call predecessors, (35), 4 states have call successors, (35) Word has length 238 [2023-11-23 08:10:34,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:10:34,519 INFO L225 Difference]: With dead ends: 408 [2023-11-23 08:10:34,519 INFO L226 Difference]: Without dead ends: 231 [2023-11-23 08:10:34,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=866, Unknown=0, NotChecked=0, Total=992 [2023-11-23 08:10:34,522 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 117 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 11 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:10:34,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1023 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 539 Invalid, 18 Unknown, 0 Unchecked, 38.3s Time] [2023-11-23 08:10:34,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-11-23 08:10:34,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 220. [2023-11-23 08:10:34,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 128 states have (on average 1.2421875) internal successors, (159), 132 states have internal predecessors, (159), 72 states have call successors, (72), 16 states have call predecessors, (72), 19 states have return successors, (80), 71 states have call predecessors, (80), 71 states have call successors, (80) [2023-11-23 08:10:34,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 311 transitions. [2023-11-23 08:10:34,536 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 311 transitions. Word has length 238 [2023-11-23 08:10:34,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:10:34,536 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 311 transitions. [2023-11-23 08:10:34,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (35), 5 states have call predecessors, (35), 4 states have call successors, (35) [2023-11-23 08:10:34,536 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 311 transitions. [2023-11-23 08:10:34,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-23 08:10:34,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:10:34,537 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:10:34,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-23 08:10:34,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:10:34,754 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:10:34,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:10:34,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1454075895, now seen corresponding path program 1 times [2023-11-23 08:10:34,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:10:34,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572181873] [2023-11-23 08:10:34,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:10:34,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:10:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:10:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:10:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:10:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:10:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:10:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:10:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:10:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:10:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:10:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:10:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:10:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:10:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:10:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 08:10:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:10:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 08:10:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:35,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-23 08:10:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:36,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-23 08:10:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:36,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:36,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:10:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:36,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:36,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-23 08:10:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:36,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-23 08:10:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:36,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-23 08:10:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:36,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-11-23 08:10:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:36,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-11-23 08:10:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:36,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-11-23 08:10:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:36,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-23 08:10:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:36,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-11-23 08:10:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:36,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-23 08:10:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:36,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-11-23 08:10:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:36,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-11-23 08:10:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 40 proven. 36 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2023-11-23 08:10:36,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:10:36,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572181873] [2023-11-23 08:10:36,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572181873] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:10:36,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207258969] [2023-11-23 08:10:36,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:10:36,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:10:36,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:10:36,130 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 08:10:36,192 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 08:10:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:36,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 3495 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-23 08:10:36,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:10:36,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:10:37,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2023-11-23 08:10:37,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2023-11-23 08:10:37,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2023-11-23 08:10:37,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2023-11-23 08:10:37,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:10:37,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2023-11-23 08:10:37,548 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 259 proven. 10 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-11-23 08:10:37,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:10:39,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207258969] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:10:39,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:10:39,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16] total 25 [2023-11-23 08:10:39,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524011881] [2023-11-23 08:10:39,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:10:39,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-23 08:10:39,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:10:39,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-23 08:10:39,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=775, Unknown=9, NotChecked=0, Total=870 [2023-11-23 08:10:39,793 INFO L87 Difference]: Start difference. First operand 220 states and 311 transitions. Second operand has 25 states, 21 states have (on average 5.904761904761905) internal successors, (124), 19 states have internal predecessors, (124), 7 states have call successors, (61), 8 states have call predecessors, (61), 8 states have return successors, (59), 7 states have call predecessors, (59), 7 states have call successors, (59) [2023-11-23 08:10:43,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:47,152 WARN L539 Checker$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 08:10:49,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:51,328 WARN L539 Checker$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 08:10:53,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:55,385 WARN L539 Checker$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 08:10:59,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:01,729 WARN L539 Checker$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 08:11:03,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:05,831 WARN L539 Checker$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 08:11:07,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:09,869 WARN L539 Checker$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 08:11:11,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:13,890 WARN L539 Checker$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 08:11:15,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:17,922 WARN L539 Checker$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 08:11:19,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:21,969 WARN L539 Checker$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 08:11:24,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:26,052 WARN L539 Checker$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 08:11:28,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:30,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:32,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:34,575 WARN L539 Checker$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 08:11:36,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:38,897 WARN L539 Checker$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 08:11:40,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:42,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:45,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:47,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:49,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:51,915 WARN L539 Checker$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 08:11:53,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:55,944 WARN L539 Checker$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 08:11:57,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:59,955 WARN L539 Checker$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 08:12:01,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:03,987 WARN L539 Checker$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 08:12:06,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:08,134 WARN L539 Checker$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 08:12:10,621 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 08:12:10,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:12:10,789 INFO L93 Difference]: Finished difference Result 596 states and 856 transitions. [2023-11-23 08:12:10,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-23 08:12:10,790 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 5.904761904761905) internal successors, (124), 19 states have internal predecessors, (124), 7 states have call successors, (61), 8 states have call predecessors, (61), 8 states have return successors, (59), 7 states have call predecessors, (59), 7 states have call successors, (59) Word has length 242 [2023-11-23 08:12:10,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:12:10,792 INFO L225 Difference]: With dead ends: 596 [2023-11-23 08:12:10,792 INFO L226 Difference]: Without dead ends: 374 [2023-11-23 08:12:10,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 365 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1202 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=915, Invalid=4775, Unknown=10, NotChecked=0, Total=5700 [2023-11-23 08:12:10,795 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 591 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 3703 mSolverCounterSat, 232 mSolverCounterUnsat, 41 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 3976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 3703 IncrementalHoareTripleChecker+Invalid, 41 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:12:10,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1345 Invalid, 3976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 3703 Invalid, 41 Unknown, 0 Unchecked, 89.1s Time] [2023-11-23 08:12:10,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-23 08:12:10,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 302. [2023-11-23 08:12:10,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 196 states have (on average 1.2551020408163265) internal successors, (246), 202 states have internal predecessors, (246), 79 states have call successors, (79), 21 states have call predecessors, (79), 26 states have return successors, (94), 78 states have call predecessors, (94), 78 states have call successors, (94) [2023-11-23 08:12:10,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 419 transitions. [2023-11-23 08:12:10,811 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 419 transitions. Word has length 242 [2023-11-23 08:12:10,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:12:10,812 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 419 transitions. [2023-11-23 08:12:10,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 5.904761904761905) internal successors, (124), 19 states have internal predecessors, (124), 7 states have call successors, (61), 8 states have call predecessors, (61), 8 states have return successors, (59), 7 states have call predecessors, (59), 7 states have call successors, (59) [2023-11-23 08:12:10,813 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 419 transitions. [2023-11-23 08:12:10,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-23 08:12:10,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:12:10,814 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:12:10,834 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 08:12:11,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:12:11,031 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:12:11,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:12:11,032 INFO L85 PathProgramCache]: Analyzing trace with hash -2075344675, now seen corresponding path program 1 times [2023-11-23 08:12:11,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:12:11,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910655386] [2023-11-23 08:12:11,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:11,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:12:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:12:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:12:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:12:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:12:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:12:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:12:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:12:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:12:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:12:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:12:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:12:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:12:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:12:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 08:12:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:12:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 08:12:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-23 08:12:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-23 08:12:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:12:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-23 08:12:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-11-23 08:12:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-23 08:12:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-11-23 08:12:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:12:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2023-11-23 08:12:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-11-23 08:12:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-23 08:12:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-11-23 08:12:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-11-23 08:12:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-11-23 08:12:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-23 08:12:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:12,454 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 30 proven. 25 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2023-11-23 08:12:12,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:12:12,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910655386] [2023-11-23 08:12:12,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910655386] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:12:12,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071313135] [2023-11-23 08:12:12,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:12,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:12:12,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:12:12,456 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 08:12:12,456 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 08:12:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:13,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 3542 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 08:12:13,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:12:13,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:12:13,521 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-23 08:12:13,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:12:13,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071313135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:12:13,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:12:13,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2023-11-23 08:12:13,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520331384] [2023-11-23 08:12:13,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:12:13,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:12:13,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:12:13,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:12:13,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2023-11-23 08:12:13,526 INFO L87 Difference]: Start difference. First operand 302 states and 419 transitions. Second operand has 12 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (34), 5 states have call predecessors, (34), 4 states have call successors, (34) [2023-11-23 08:12:18,597 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 08:12:20,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:22,948 WARN L539 Checker$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 08:12:24,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:26,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:28,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:31,009 WARN L539 Checker$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 08:12:33,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:35,053 WARN L539 Checker$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 08:12:37,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:39,126 WARN L539 Checker$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 08:12:41,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:43,180 WARN L539 Checker$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 08:12:45,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:47,410 WARN L539 Checker$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 08:12:49,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:51,450 WARN L539 Checker$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 08:12:53,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:53,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:12:53,486 INFO L93 Difference]: Finished difference Result 598 states and 827 transitions. [2023-11-23 08:12:53,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:12:53,487 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (34), 5 states have call predecessors, (34), 4 states have call successors, (34) Word has length 252 [2023-11-23 08:12:53,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:12:53,489 INFO L225 Difference]: With dead ends: 598 [2023-11-23 08:12:53,489 INFO L226 Difference]: Without dead ends: 302 [2023-11-23 08:12:53,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2023-11-23 08:12:53,490 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 101 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 13 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:12:53,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1175 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 565 Invalid, 18 Unknown, 0 Unchecked, 39.8s Time] [2023-11-23 08:12:53,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-23 08:12:53,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2023-11-23 08:12:53,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 196 states have (on average 1.2551020408163265) internal successors, (246), 202 states have internal predecessors, (246), 79 states have call successors, (79), 21 states have call predecessors, (79), 26 states have return successors, (93), 78 states have call predecessors, (93), 78 states have call successors, (93) [2023-11-23 08:12:53,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 418 transitions. [2023-11-23 08:12:53,507 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 418 transitions. Word has length 252 [2023-11-23 08:12:53,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:12:53,508 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 418 transitions. [2023-11-23 08:12:53,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (34), 5 states have call predecessors, (34), 4 states have call successors, (34) [2023-11-23 08:12:53,508 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 418 transitions. [2023-11-23 08:12:53,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-11-23 08:12:53,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:12:53,510 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:12:53,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-23 08:12:53,710 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,SelfDestructingSolverStorable11 [2023-11-23 08:12:53,711 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:12:53,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:12:53,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1441238877, now seen corresponding path program 2 times [2023-11-23 08:12:53,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:12:53,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910185979] [2023-11-23 08:12:53,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:53,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:12:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:12:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:12:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:12:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:12:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:12:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:12:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:12:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:12:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:12:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:12:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:12:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:12:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:12:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 08:12:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:12:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 08:12:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-23 08:12:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 08:12:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:12:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-11-23 08:12:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-23 08:12:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-23 08:12:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-11-23 08:12:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:12:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-11-23 08:12:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-23 08:12:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-11-23 08:12:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-11-23 08:12:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-11-23 08:12:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-23 08:12:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-11-23 08:12:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:54,962 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2023-11-23 08:12:54,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:12:54,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910185979] [2023-11-23 08:12:54,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910185979] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:12:54,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668802603] [2023-11-23 08:12:54,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:12:54,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:12:54,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:12:54,964 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 08:12:54,988 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 08:12:56,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:12:56,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:12:56,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 3549 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 08:12:56,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:12:56,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:12:56,657 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-11-23 08:12:56,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:12:56,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668802603] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:12:56,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:12:56,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2023-11-23 08:12:56,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436634179] [2023-11-23 08:12:56,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:12:56,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:12:56,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:12:56,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:12:56,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2023-11-23 08:12:56,659 INFO L87 Difference]: Start difference. First operand 302 states and 418 transitions. Second operand has 12 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 4 states have call successors, (37), 3 states have call predecessors, (37), 5 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) [2023-11-23 08:13:01,122 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 08:13:03,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:13:05,492 WARN L539 Checker$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 08:13:07,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:13:09,527 WARN L539 Checker$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 08:13:11,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:13:13,537 WARN L539 Checker$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 08:13:15,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:13:17,582 WARN L539 Checker$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 08:13:19,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:13:21,675 WARN L539 Checker$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 08:13:23,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:13:25,721 WARN L539 Checker$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 08:13:27,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:13:29,946 WARN L539 Checker$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 08:13:31,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:13:33,978 WARN L539 Checker$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 08:13:36,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:13:36,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:13:36,027 INFO L93 Difference]: Finished difference Result 591 states and 813 transitions. [2023-11-23 08:13:36,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:13:36,028 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 4 states have call successors, (37), 3 states have call predecessors, (37), 5 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) Word has length 256 [2023-11-23 08:13:36,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:13:36,029 INFO L225 Difference]: With dead ends: 591 [2023-11-23 08:13:36,030 INFO L226 Difference]: Without dead ends: 299 [2023-11-23 08:13:36,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2023-11-23 08:13:36,031 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 96 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 12 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:13:36,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 1886 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 665 Invalid, 18 Unknown, 0 Unchecked, 39.2s Time] [2023-11-23 08:13:36,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-23 08:13:36,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-11-23 08:13:36,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 194 states have (on average 1.2474226804123711) internal successors, (242), 199 states have internal predecessors, (242), 79 states have call successors, (79), 21 states have call predecessors, (79), 25 states have return successors, (92), 78 states have call predecessors, (92), 78 states have call successors, (92) [2023-11-23 08:13:36,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 413 transitions. [2023-11-23 08:13:36,047 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 413 transitions. Word has length 256 [2023-11-23 08:13:36,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:13:36,047 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 413 transitions. [2023-11-23 08:13:36,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 4 states have call successors, (37), 3 states have call predecessors, (37), 5 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) [2023-11-23 08:13:36,047 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 413 transitions. [2023-11-23 08:13:36,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-11-23 08:13:36,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:13:36,049 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:13:36,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-23 08:13:36,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 08:13:36,268 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:13:36,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:13:36,268 INFO L85 PathProgramCache]: Analyzing trace with hash -734608023, now seen corresponding path program 3 times [2023-11-23 08:13:36,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:13:36,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891645346] [2023-11-23 08:13:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:13:36,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:13:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:13:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:13:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:13:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:13:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:13:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:13:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:13:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:13:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:13:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:13:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 08:13:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 08:13:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 08:13:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 08:13:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:13:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 08:13:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-23 08:13:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-23 08:13:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:13:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-23 08:13:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-11-23 08:13:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-11-23 08:13:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-11-23 08:13:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:13:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-11-23 08:13:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-11-23 08:13:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-23 08:13:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-11-23 08:13:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-23 08:13:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-11-23 08:13:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-11-23 08:13:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2023-11-23 08:13:37,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:13:37,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891645346] [2023-11-23 08:13:37,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891645346] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:13:37,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575637124] [2023-11-23 08:13:37,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:13:37,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:13:37,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:13:37,512 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 08:13:37,513 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 08:13:38,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 08:13:38,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:13:38,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 2731 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-23 08:13:38,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:13:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2023-11-23 08:13:38,230 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:13:38,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575637124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:13:38,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:13:38,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 14 [2023-11-23 08:13:38,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705226395] [2023-11-23 08:13:38,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:13:38,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:13:38,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:13:38,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:13:38,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:13:38,232 INFO L87 Difference]: Start difference. First operand 299 states and 413 transitions. Second operand has 9 states, 7 states have (on average 12.0) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 08:13:39,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:13:39,917 INFO L93 Difference]: Finished difference Result 601 states and 833 transitions. [2023-11-23 08:13:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:13:39,918 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 12.0) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 260 [2023-11-23 08:13:39,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:13:39,920 INFO L225 Difference]: With dead ends: 601 [2023-11-23 08:13:39,920 INFO L226 Difference]: Without dead ends: 315 [2023-11-23 08:13:39,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:13:39,921 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 13 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1968 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:13:39,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1968 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 08:13:39,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-23 08:13:39,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 303. [2023-11-23 08:13:39,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 197 states have (on average 1.2436548223350254) internal successors, (245), 203 states have internal predecessors, (245), 79 states have call successors, (79), 21 states have call predecessors, (79), 26 states have return successors, (94), 78 states have call predecessors, (94), 78 states have call successors, (94) [2023-11-23 08:13:39,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 418 transitions. [2023-11-23 08:13:39,940 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 418 transitions. Word has length 260 [2023-11-23 08:13:39,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:13:39,940 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 418 transitions. [2023-11-23 08:13:39,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 12.0) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 08:13:39,941 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 418 transitions. [2023-11-23 08:13:39,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-11-23 08:13:39,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:13:39,942 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:13:39,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-23 08:13:40,162 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,SelfDestructingSolverStorable13 [2023-11-23 08:13:40,163 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:13:40,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:13:40,163 INFO L85 PathProgramCache]: Analyzing trace with hash -778353842, now seen corresponding path program 1 times [2023-11-23 08:13:40,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:13:40,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17878687] [2023-11-23 08:13:40,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:13:40,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:13:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:13:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:13:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:13:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:13:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:13:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:13:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:13:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:13:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:13:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:13:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:13:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:13:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 08:13:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 08:13:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:13:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-23 08:13:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 08:13:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-23 08:13:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:13:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 08:13:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-23 08:13:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-11-23 08:13:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-11-23 08:13:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:13:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-23 08:13:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-11-23 08:13:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-11-23 08:13:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-11-23 08:13:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-11-23 08:13:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-11-23 08:13:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-11-23 08:13:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:40,597 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2023-11-23 08:13:40,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:13:40,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17878687] [2023-11-23 08:13:40,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17878687] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:13:40,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146414224] [2023-11-23 08:13:40,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:13:40,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:13:40,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:13:40,613 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 08:13:40,646 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 08:13:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:41,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 3561 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:13:41,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:13:41,385 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2023-11-23 08:13:41,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:13:41,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146414224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:13:41,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:13:41,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-11-23 08:13:41,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712878151] [2023-11-23 08:13:41,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:13:41,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:13:41,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:13:41,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:13:41,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:13:41,387 INFO L87 Difference]: Start difference. First operand 303 states and 418 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-23 08:13:41,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:13:41,728 INFO L93 Difference]: Finished difference Result 629 states and 875 transitions. [2023-11-23 08:13:41,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:13:41,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 262 [2023-11-23 08:13:41,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:13:41,730 INFO L225 Difference]: With dead ends: 629 [2023-11-23 08:13:41,730 INFO L226 Difference]: Without dead ends: 332 [2023-11-23 08:13:41,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:13:41,732 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 9 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:13:41,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 767 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:13:41,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-11-23 08:13:41,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 311. [2023-11-23 08:13:41,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 205 states have (on average 1.2341463414634146) internal successors, (253), 211 states have internal predecessors, (253), 79 states have call successors, (79), 21 states have call predecessors, (79), 26 states have return successors, (94), 78 states have call predecessors, (94), 78 states have call successors, (94) [2023-11-23 08:13:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 426 transitions. [2023-11-23 08:13:41,748 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 426 transitions. Word has length 262 [2023-11-23 08:13:41,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:13:41,748 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 426 transitions. [2023-11-23 08:13:41,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-23 08:13:41,749 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 426 transitions. [2023-11-23 08:13:41,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-11-23 08:13:41,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:13:41,750 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:13:41,782 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 08:13:41,965 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,SelfDestructingSolverStorable14 [2023-11-23 08:13:41,965 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:13:41,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:13:41,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1949802094, now seen corresponding path program 1 times [2023-11-23 08:13:41,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:13:41,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684636855] [2023-11-23 08:13:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:13:41,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:13:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:13:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:13:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:13:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:13:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:13:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:13:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:13:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:13:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:13:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:13:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:13:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:13:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 08:13:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 08:13:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:13:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-23 08:13:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 08:13:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-23 08:13:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:13:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-23 08:13:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-23 08:13:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-11-23 08:13:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:42,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 Killed by 15